organic compounds
(1R,3S)-N-Benzhydryl-2-benzyl-6,7-dimethoxy-1-phenyl-1,2,3,4-tetrahydroisoquinoline-3-carbothioamide
aSchool of Pharmacy and Pharmacology, University of KwaZulu-Natal, Durban 4000, South Africa, and bSchool of Chemistry, University of KwaZulu-Natal, Durban 4000, South Africa
*Correspondence e-mail: maguireg@ukzn.ac.za
The title compound, C38H36N2O2S, has a heterocyclic ring that assumes a half-chair conformation. The phenyl rings of neighbouring molecules align forming alternating chains parallel to [100] within the crystal packing. The absolute stereochemistry of the crystal was confirmed to be R,S at the 1- and 3-positions, respectively, by proton NMR spectroscopy. A single intramolecular N—H⋯N hydrogen bond is observed.
Related literature
For background to chiral organocatalysts bearing a tetrahydroisoquinoline framework and for related structures, see: Naicker et al. (2010, 2011a,b).
Experimental
Crystal data
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Data collection
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Data collection: COLLECT (Nonius, 2000); cell DENZO-SMN (Otwinowski & Minor, 1997); data reduction: DENZO-SMN; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomov et al., 2009); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536811049324/hg5134sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811049324/hg5134Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811049324/hg5134Isup3.cml
To a solution of (1R,3S)-N-benzhydryl-2-benzyl-6,7-dimethoxy-1-phenyl-1,2,3,4-tetrahydroisoquinoline-3-carboxamide (0.1 g, 0.02 mmol) in dry THF (20 ml), Lawssons reagent (0.06 g, 0.15 mmol) was added. The mixture was allowed to stir at 50 °C for 16 h under a nitrogen atmosphere. Thereafter the solvent was evaporated in vacuo and the residue purified using silica
(hexane: ethyl acetate, 50:50, Rf = 0.8) to yield the pure product (0.1 g, 90%) as a yellow solid. M.p. = 458 KRecrystallization from ethyl acetate at room temperature afforded crystals suitable for X-ray analysis.
All non-hydrogen atoms were refined anisotropically. All hydrogen atoms could be found in the difference electron density maps. H1N was thus positioned and refined freely with independent isotropic temperature factors. The other hydrogen atoms were placed with idealized positions and refined as riding on their parents atoms with Uiso = 1.2 or 1.5 x Ueq (C).
Chiral organocatalysts bearing a tetrahydroisoquinoline (TIQ) framework have proven to be very successful by our research group (Naicker et al., 2010 and 2011a). The title compound (Fig. 1) is a precursor in the synthesis of these novel chiral organocatalysts. The
contains a thioamide moiety at the C10 position making it the first example in this class to be reported.The absolute stereochemistry of the molecule was confirmed to be R,S at C1 and C9 positions respectively by proton NMR spectroscopy.
The N-containing six membered ring assumes a half chair conformation [Q=0.5212 (12) Å, θ= 50.52 (14)° and φ=325.8 (18)°] similar to an analogous structure which has a methyl ester at the C10 position (Naicker et al., 2011b). This heterocyclic ring shape affects the position of the thioamide moiety relative to the phenyl ring at the C1 position. The torsion angle for C1—N1—C9—C10 is -157.6 (1)°. Also, in the analogous structure the torsion angle between C8—N1—C9—C10 is 44.1 (2)° while in the title structure this angle is -18.3 (2)°. This is probably due to the C═S bond which adopts a more planar orientation relative to the TIQ backbone as compared to the C═O bond orientation previously reported in this family of molecules (Naicker et al., 2011b). In addition, the N-benzyl and phenyl ring at C1 exist in a trans orientation along the N1—C9 bond with a dihedral angle of -153.3 (1)°.
The title compound contains four phenyl rings however, no intermolecular C—H···π or π···π interactions are evident. A single intramolecular hydrogen bond between atoms N2—H1N···N1 can be observed. The molecules within the line up such that the phenyl rings face each other, this forms alternating chains parallel to the [100] plane (Fig. 2).
For background to chiral organocatalysts bearing a tetrahydroisoquinoline framework and for related structures, see: Naicker et al. (2010, 2011a,b).
Data collection: COLLECT (Nonius, 2000); cell
DENZO-SMN (Otwinowski & Minor, 1997); data reduction: DENZO-SMN (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomov et al., 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C38H36N2O2S | Dx = 1.239 Mg m−3 |
Mr = 584.75 | Melting point: 458 K |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 7464 reflections |
a = 9.0463 (1) Å | θ = 2.4–27.9° |
b = 17.6687 (2) Å | µ = 0.14 mm−1 |
c = 19.6178 (2) Å | T = 173 K |
V = 3135.64 (6) Å3 | Block, colourless |
Z = 4 | 0.34 × 0.32 × 0.30 mm |
F(000) = 1240 |
Nonius KappaCCD diffractometer | 6545 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.013 |
Graphite monochromator | θmax = 27.9°, θmin = 2.4° |
1.2° φ scans and ω scans | h = −11→11 |
7464 measured reflections | k = −23→23 |
7464 independent reflections | l = −25→25 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.033 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.090 | w = 1/[σ2(Fo2) + (0.0573P)2 + 0.1291P] where P = (Fo2 + 2Fc2)/3 |
S = 1.06 | (Δ/σ)max < 0.001 |
7464 reflections | Δρmax = 0.19 e Å−3 |
394 parameters | Δρmin = −0.25 e Å−3 |
0 restraints | Absolute structure: Flack (1983), 3271 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.07 (5) |
C38H36N2O2S | V = 3135.64 (6) Å3 |
Mr = 584.75 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 9.0463 (1) Å | µ = 0.14 mm−1 |
b = 17.6687 (2) Å | T = 173 K |
c = 19.6178 (2) Å | 0.34 × 0.32 × 0.30 mm |
Nonius KappaCCD diffractometer | 6545 reflections with I > 2σ(I) |
7464 measured reflections | Rint = 0.013 |
7464 independent reflections |
R[F2 > 2σ(F2)] = 0.033 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.090 | Δρmax = 0.19 e Å−3 |
S = 1.06 | Δρmin = −0.25 e Å−3 |
7464 reflections | Absolute structure: Flack (1983), 3271 Friedel pairs |
394 parameters | Absolute structure parameter: −0.07 (5) |
0 restraints |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.56498 (4) | 0.31046 (3) | 0.215098 (18) | 0.04475 (11) | |
O1 | 1.39454 (9) | 0.35968 (6) | −0.01266 (5) | 0.0361 (2) | |
O2 | 1.15098 (11) | 0.39105 (6) | −0.07511 (5) | 0.0412 (3) | |
N1 | 0.98038 (11) | 0.23680 (6) | 0.21258 (5) | 0.0254 (2) | |
H1N | 0.8629 (19) | 0.2485 (9) | 0.3066 (8) | 0.038 (4)* | |
N2 | 0.76795 (13) | 0.26373 (7) | 0.30274 (5) | 0.0300 (2) | |
C1 | 1.12804 (13) | 0.26381 (7) | 0.19152 (6) | 0.0258 (2) | |
H1 | 1.1954 | 0.2189 | 0.1909 | 0.031* | |
C2 | 1.12788 (13) | 0.29751 (7) | 0.11981 (6) | 0.0252 (2) | |
C3 | 1.26341 (13) | 0.31006 (7) | 0.08659 (6) | 0.0258 (2) | |
H3 | 1.3530 | 0.2963 | 0.1087 | 0.031* | |
C4 | 1.26841 (14) | 0.34205 (7) | 0.02236 (6) | 0.0277 (3) | |
C5 | 1.13534 (14) | 0.36025 (8) | −0.01141 (6) | 0.0295 (3) | |
C6 | 1.00254 (14) | 0.34772 (7) | 0.02100 (6) | 0.0296 (3) | |
H6 | 0.9130 | 0.3605 | −0.0015 | 0.036* | |
C7 | 0.99719 (13) | 0.31627 (7) | 0.08690 (6) | 0.0263 (2) | |
C8 | 0.84760 (13) | 0.30508 (8) | 0.12010 (6) | 0.0281 (3) | |
H8A | 0.7988 | 0.2595 | 0.1012 | 0.034* | |
H8B | 0.7836 | 0.3494 | 0.1111 | 0.034* | |
C9 | 0.87122 (13) | 0.29575 (7) | 0.19647 (6) | 0.0254 (3) | |
H9 | 0.9174 | 0.3443 | 0.2118 | 0.030* | |
C10 | 0.73303 (14) | 0.28667 (7) | 0.24034 (6) | 0.0273 (3) | |
C11 | 0.66652 (15) | 0.25452 (8) | 0.36016 (6) | 0.0307 (3) | |
H11 | 0.5659 | 0.2705 | 0.3447 | 0.037* | |
C12 | 0.66026 (16) | 0.17078 (8) | 0.37684 (7) | 0.0365 (3) | |
C13 | 0.57712 (19) | 0.12406 (10) | 0.33433 (10) | 0.0513 (4) | |
H13 | 0.5187 | 0.1457 | 0.2991 | 0.062* | |
C14 | 0.5791 (2) | 0.04658 (12) | 0.34297 (13) | 0.0717 (6) | |
H14 | 0.5222 | 0.0151 | 0.3138 | 0.086* | |
C15 | 0.6627 (3) | 0.01513 (11) | 0.39351 (13) | 0.0783 (7) | |
H15 | 0.6639 | −0.0383 | 0.3991 | 0.094* | |
C16 | 0.7452 (3) | 0.05997 (12) | 0.43635 (10) | 0.0724 (7) | |
H16 | 0.8025 | 0.0375 | 0.4715 | 0.087* | |
C17 | 0.7449 (2) | 0.13879 (10) | 0.42834 (8) | 0.0519 (4) | |
H17 | 0.8020 | 0.1699 | 0.4578 | 0.062* | |
C18 | 0.71133 (15) | 0.30534 (8) | 0.41918 (7) | 0.0355 (3) | |
C19 | 0.62417 (18) | 0.30449 (10) | 0.47767 (7) | 0.0461 (4) | |
H19 | 0.5398 | 0.2725 | 0.4797 | 0.055* | |
C20 | 0.6594 (2) | 0.34981 (12) | 0.53304 (9) | 0.0596 (5) | |
H20 | 0.5989 | 0.3490 | 0.5726 | 0.071* | |
C21 | 0.7820 (2) | 0.39607 (13) | 0.53074 (10) | 0.0679 (6) | |
H21 | 0.8059 | 0.4270 | 0.5688 | 0.081* | |
C22 | 0.8697 (2) | 0.39761 (14) | 0.47359 (11) | 0.0721 (6) | |
H22 | 0.9541 | 0.4296 | 0.4720 | 0.087* | |
C23 | 0.8343 (2) | 0.35184 (11) | 0.41767 (9) | 0.0533 (4) | |
H23 | 0.8953 | 0.3527 | 0.3783 | 0.064* | |
C24 | 1.18222 (13) | 0.31673 (8) | 0.24787 (6) | 0.0274 (3) | |
C25 | 1.21466 (16) | 0.28510 (9) | 0.31128 (7) | 0.0377 (3) | |
H25 | 1.2090 | 0.2318 | 0.3171 | 0.045* | |
C26 | 1.25474 (18) | 0.32987 (11) | 0.36556 (7) | 0.0494 (4) | |
H26 | 1.2770 | 0.3073 | 0.4083 | 0.059* | |
C27 | 1.2627 (2) | 0.40751 (11) | 0.35813 (8) | 0.0525 (4) | |
H27 | 1.2896 | 0.4384 | 0.3957 | 0.063* | |
C28 | 1.23137 (18) | 0.43995 (10) | 0.29567 (8) | 0.0461 (4) | |
H28 | 1.2370 | 0.4933 | 0.2902 | 0.055* | |
C29 | 1.19146 (15) | 0.39432 (8) | 0.24068 (7) | 0.0347 (3) | |
H29 | 1.1704 | 0.4169 | 0.1978 | 0.042* | |
C30 | 0.94220 (15) | 0.16198 (7) | 0.18354 (6) | 0.0311 (3) | |
H30A | 0.9619 | 0.1621 | 0.1339 | 0.037* | |
H30B | 0.8356 | 0.1519 | 0.1905 | 0.037* | |
C31 | 1.03199 (15) | 0.10040 (7) | 0.21717 (7) | 0.0313 (3) | |
C32 | 1.00795 (17) | 0.08224 (8) | 0.28514 (7) | 0.0369 (3) | |
H32 | 0.9328 | 0.1078 | 0.3099 | 0.044* | |
C33 | 1.09188 (18) | 0.02740 (9) | 0.31743 (9) | 0.0449 (4) | |
H33 | 1.0739 | 0.0154 | 0.3639 | 0.054* | |
C34 | 1.20184 (17) | −0.00989 (8) | 0.28199 (10) | 0.0483 (4) | |
H34 | 1.2612 | −0.0466 | 0.3044 | 0.058* | |
C35 | 1.22548 (19) | 0.00598 (9) | 0.21423 (10) | 0.0535 (4) | |
H35 | 1.2999 | −0.0203 | 0.1896 | 0.064* | |
C36 | 1.13978 (18) | 0.06090 (9) | 0.18180 (9) | 0.0442 (4) | |
H36 | 1.1556 | 0.0713 | 0.1349 | 0.053* | |
C37 | 1.53137 (14) | 0.34969 (9) | 0.02154 (7) | 0.0368 (3) | |
H37A | 1.5315 | 0.3794 | 0.0637 | 0.055* | |
H37B | 1.6122 | 0.3667 | −0.0080 | 0.055* | |
H37C | 1.5449 | 0.2960 | 0.0325 | 0.055* | |
C38 | 1.01921 (18) | 0.40522 (12) | −0.11254 (8) | 0.0523 (4) | |
H38A | 0.9625 | 0.3582 | −0.1168 | 0.078* | |
H38B | 1.0446 | 0.4240 | −0.1580 | 0.078* | |
H38C | 0.9597 | 0.4432 | −0.0886 | 0.078* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.02261 (15) | 0.0813 (3) | 0.03029 (17) | 0.00153 (17) | −0.00103 (14) | 0.01267 (18) |
O1 | 0.0218 (4) | 0.0640 (6) | 0.0226 (4) | −0.0016 (4) | 0.0025 (3) | 0.0056 (5) |
O2 | 0.0294 (5) | 0.0712 (7) | 0.0230 (5) | −0.0013 (5) | −0.0009 (4) | 0.0162 (5) |
N1 | 0.0222 (5) | 0.0317 (5) | 0.0222 (5) | 0.0003 (4) | 0.0004 (4) | 0.0019 (4) |
N2 | 0.0229 (5) | 0.0445 (6) | 0.0227 (5) | 0.0020 (5) | 0.0021 (4) | 0.0030 (4) |
C1 | 0.0216 (6) | 0.0343 (6) | 0.0215 (6) | 0.0009 (5) | −0.0017 (5) | 0.0020 (5) |
C2 | 0.0250 (6) | 0.0323 (6) | 0.0183 (5) | 0.0005 (5) | 0.0010 (5) | −0.0018 (5) |
C3 | 0.0208 (5) | 0.0355 (6) | 0.0212 (5) | 0.0016 (5) | −0.0012 (5) | −0.0014 (5) |
C4 | 0.0243 (6) | 0.0380 (6) | 0.0208 (6) | −0.0013 (5) | 0.0024 (5) | −0.0020 (5) |
C5 | 0.0281 (6) | 0.0423 (7) | 0.0180 (5) | −0.0022 (5) | −0.0009 (5) | 0.0035 (5) |
C6 | 0.0243 (6) | 0.0422 (7) | 0.0224 (6) | 0.0009 (5) | −0.0038 (5) | 0.0040 (5) |
C7 | 0.0231 (6) | 0.0353 (6) | 0.0204 (5) | −0.0001 (5) | 0.0004 (5) | 0.0007 (5) |
C8 | 0.0219 (6) | 0.0407 (7) | 0.0216 (6) | 0.0018 (5) | −0.0007 (5) | 0.0039 (5) |
C9 | 0.0200 (5) | 0.0355 (6) | 0.0207 (6) | −0.0001 (5) | −0.0004 (4) | 0.0021 (5) |
C10 | 0.0238 (6) | 0.0351 (6) | 0.0230 (6) | −0.0022 (5) | 0.0002 (5) | 0.0013 (5) |
C11 | 0.0255 (6) | 0.0458 (8) | 0.0206 (6) | 0.0015 (6) | 0.0038 (5) | 0.0012 (5) |
C12 | 0.0341 (7) | 0.0478 (8) | 0.0275 (6) | 0.0034 (6) | 0.0126 (6) | 0.0038 (6) |
C13 | 0.0409 (9) | 0.0509 (9) | 0.0622 (11) | −0.0062 (7) | 0.0103 (8) | −0.0039 (8) |
C14 | 0.0596 (12) | 0.0533 (11) | 0.1023 (18) | −0.0122 (9) | 0.0277 (13) | −0.0074 (12) |
C15 | 0.1006 (17) | 0.0443 (10) | 0.0899 (16) | 0.0067 (11) | 0.0567 (15) | 0.0114 (11) |
C16 | 0.1033 (17) | 0.0658 (12) | 0.0480 (10) | 0.0370 (13) | 0.0324 (12) | 0.0247 (10) |
C17 | 0.0691 (11) | 0.0576 (9) | 0.0289 (7) | 0.0223 (9) | 0.0124 (7) | 0.0087 (7) |
C18 | 0.0349 (7) | 0.0471 (8) | 0.0244 (6) | 0.0062 (6) | −0.0002 (5) | −0.0011 (6) |
C19 | 0.0486 (9) | 0.0604 (9) | 0.0294 (7) | 0.0029 (8) | 0.0071 (7) | −0.0055 (7) |
C20 | 0.0639 (11) | 0.0822 (13) | 0.0326 (8) | 0.0110 (10) | 0.0034 (8) | −0.0154 (8) |
C21 | 0.0647 (12) | 0.0924 (14) | 0.0466 (10) | 0.0085 (11) | −0.0098 (9) | −0.0324 (10) |
C22 | 0.0525 (11) | 0.0978 (15) | 0.0660 (13) | −0.0125 (10) | −0.0053 (10) | −0.0334 (12) |
C23 | 0.0420 (9) | 0.0742 (11) | 0.0438 (9) | −0.0045 (8) | 0.0056 (7) | −0.0170 (8) |
C24 | 0.0192 (5) | 0.0433 (7) | 0.0198 (6) | 0.0003 (5) | 0.0000 (4) | −0.0005 (5) |
C25 | 0.0329 (7) | 0.0549 (8) | 0.0254 (6) | −0.0070 (6) | −0.0057 (6) | 0.0076 (6) |
C26 | 0.0445 (9) | 0.0813 (12) | 0.0225 (6) | −0.0125 (8) | −0.0070 (6) | 0.0035 (7) |
C27 | 0.0495 (9) | 0.0759 (12) | 0.0322 (8) | −0.0116 (9) | −0.0053 (7) | −0.0157 (8) |
C28 | 0.0455 (8) | 0.0502 (8) | 0.0427 (9) | −0.0019 (7) | −0.0066 (7) | −0.0112 (7) |
C29 | 0.0319 (7) | 0.0438 (7) | 0.0284 (7) | 0.0000 (6) | −0.0050 (5) | −0.0002 (6) |
C30 | 0.0314 (6) | 0.0367 (7) | 0.0252 (6) | −0.0026 (5) | −0.0017 (5) | −0.0004 (5) |
C31 | 0.0324 (7) | 0.0307 (6) | 0.0307 (6) | −0.0050 (5) | −0.0009 (5) | −0.0019 (5) |
C32 | 0.0453 (8) | 0.0353 (7) | 0.0300 (7) | 0.0008 (6) | −0.0027 (6) | −0.0012 (6) |
C33 | 0.0562 (10) | 0.0364 (7) | 0.0421 (8) | −0.0038 (7) | −0.0116 (8) | 0.0052 (6) |
C34 | 0.0419 (8) | 0.0338 (7) | 0.0693 (11) | −0.0036 (6) | −0.0122 (8) | 0.0103 (7) |
C35 | 0.0433 (9) | 0.0411 (8) | 0.0762 (12) | 0.0069 (7) | 0.0152 (9) | 0.0040 (8) |
C36 | 0.0484 (9) | 0.0402 (7) | 0.0439 (8) | 0.0014 (7) | 0.0117 (7) | 0.0035 (7) |
C37 | 0.0231 (6) | 0.0587 (9) | 0.0285 (6) | 0.0000 (6) | 0.0012 (5) | 0.0009 (6) |
C38 | 0.0369 (8) | 0.0890 (12) | 0.0310 (7) | −0.0062 (8) | −0.0069 (6) | 0.0259 (8) |
S1—C10 | 1.6532 (13) | C18—C23 | 1.383 (2) |
O1—C4 | 1.3679 (15) | C18—C19 | 1.392 (2) |
O1—C37 | 1.4190 (15) | C19—C20 | 1.387 (2) |
O2—C5 | 1.3704 (15) | C19—H19 | 0.9500 |
O2—C38 | 1.4223 (17) | C20—C21 | 1.379 (3) |
N1—C9 | 1.4696 (16) | C20—H20 | 0.9500 |
N1—C1 | 1.4773 (15) | C21—C22 | 1.374 (3) |
N1—C30 | 1.4804 (16) | C21—H21 | 0.9500 |
N2—C10 | 1.3276 (16) | C22—C23 | 1.400 (3) |
N2—C11 | 1.4621 (16) | C22—H22 | 0.9500 |
N2—H1N | 0.903 (17) | C23—H23 | 0.9500 |
C1—C2 | 1.5277 (16) | C24—C29 | 1.381 (2) |
C1—C24 | 1.5286 (17) | C24—C25 | 1.3950 (18) |
C1—H1 | 1.0000 | C25—C26 | 1.375 (2) |
C2—C7 | 1.3872 (16) | C25—H25 | 0.9500 |
C2—C3 | 1.4061 (17) | C26—C27 | 1.381 (3) |
C3—C4 | 1.3817 (17) | C26—H26 | 0.9500 |
C3—H3 | 0.9500 | C27—C28 | 1.382 (2) |
C4—C5 | 1.4111 (18) | C27—H27 | 0.9500 |
C5—C6 | 1.3771 (18) | C28—C29 | 1.394 (2) |
C6—C7 | 1.4080 (17) | C28—H28 | 0.9500 |
C6—H6 | 0.9500 | C29—H29 | 0.9500 |
C7—C8 | 1.5148 (17) | C30—C31 | 1.5096 (19) |
C8—C9 | 1.5223 (16) | C30—H30A | 0.9900 |
C8—H8A | 0.9900 | C30—H30B | 0.9900 |
C8—H8B | 0.9900 | C31—C36 | 1.385 (2) |
C9—C10 | 1.5262 (17) | C31—C32 | 1.389 (2) |
C9—H9 | 1.0000 | C32—C33 | 1.384 (2) |
C11—C12 | 1.516 (2) | C32—H32 | 0.9500 |
C11—C18 | 1.5202 (19) | C33—C34 | 1.381 (2) |
C11—H11 | 1.0000 | C33—H33 | 0.9500 |
C12—C17 | 1.388 (2) | C34—C35 | 1.375 (3) |
C12—C13 | 1.394 (2) | C34—H34 | 0.9500 |
C13—C14 | 1.379 (3) | C35—C36 | 1.396 (2) |
C13—H13 | 0.9500 | C35—H35 | 0.9500 |
C14—C15 | 1.365 (4) | C36—H36 | 0.9500 |
C14—H14 | 0.9500 | C37—H37A | 0.9800 |
C15—C16 | 1.375 (4) | C37—H37B | 0.9800 |
C15—H15 | 0.9500 | C37—H37C | 0.9800 |
C16—C17 | 1.401 (3) | C38—H38A | 0.9800 |
C16—H16 | 0.9500 | C38—H38B | 0.9800 |
C17—H17 | 0.9500 | C38—H38C | 0.9800 |
C4—O1—C37 | 117.50 (10) | C23—C18—C11 | 123.29 (13) |
C5—O2—C38 | 117.01 (11) | C19—C18—C11 | 118.05 (13) |
C9—N1—C1 | 108.58 (9) | C20—C19—C18 | 120.62 (16) |
C9—N1—C30 | 113.17 (10) | C20—C19—H19 | 119.7 |
C1—N1—C30 | 113.06 (10) | C18—C19—H19 | 119.7 |
C10—N2—C11 | 126.52 (11) | C21—C20—C19 | 120.09 (17) |
C10—N2—H1N | 113.2 (10) | C21—C20—H20 | 120.0 |
C11—N2—H1N | 120.0 (10) | C19—C20—H20 | 120.0 |
N1—C1—C2 | 112.49 (9) | C22—C21—C20 | 120.22 (16) |
N1—C1—C24 | 106.58 (10) | C22—C21—H21 | 119.9 |
C2—C1—C24 | 115.33 (10) | C20—C21—H21 | 119.9 |
N1—C1—H1 | 107.4 | C21—C22—C23 | 119.72 (19) |
C2—C1—H1 | 107.4 | C21—C22—H22 | 120.1 |
C24—C1—H1 | 107.4 | C23—C22—H22 | 120.1 |
C7—C2—C3 | 119.32 (10) | C18—C23—C22 | 120.69 (16) |
C7—C2—C1 | 121.50 (10) | C18—C23—H23 | 119.7 |
C3—C2—C1 | 119.17 (11) | C22—C23—H23 | 119.7 |
C4—C3—C2 | 121.04 (11) | C29—C24—C25 | 118.44 (12) |
C4—C3—H3 | 119.5 | C29—C24—C1 | 123.56 (11) |
C2—C3—H3 | 119.5 | C25—C24—C1 | 117.86 (12) |
O1—C4—C3 | 125.35 (11) | C26—C25—C24 | 121.03 (15) |
O1—C4—C5 | 115.08 (10) | C26—C25—H25 | 119.5 |
C3—C4—C5 | 119.57 (11) | C24—C25—H25 | 119.5 |
O2—C5—C6 | 125.09 (12) | C25—C26—C27 | 120.22 (15) |
O2—C5—C4 | 115.50 (11) | C25—C26—H26 | 119.9 |
C6—C5—C4 | 119.40 (11) | C27—C26—H26 | 119.9 |
C5—C6—C7 | 121.15 (11) | C26—C27—C28 | 119.65 (14) |
C5—C6—H6 | 119.4 | C26—C27—H27 | 120.2 |
C7—C6—H6 | 119.4 | C28—C27—H27 | 120.2 |
C2—C7—C6 | 119.50 (11) | C27—C28—C29 | 119.95 (16) |
C2—C7—C8 | 122.00 (10) | C27—C28—H28 | 120.0 |
C6—C7—C8 | 118.49 (11) | C29—C28—H28 | 120.0 |
C7—C8—C9 | 108.18 (10) | C24—C29—C28 | 120.71 (13) |
C7—C8—H8A | 110.1 | C24—C29—H29 | 119.6 |
C9—C8—H8A | 110.1 | C28—C29—H29 | 119.6 |
C7—C8—H8B | 110.1 | N1—C30—C31 | 110.48 (10) |
C9—C8—H8B | 110.1 | N1—C30—H30A | 109.6 |
H8A—C8—H8B | 108.4 | C31—C30—H30A | 109.6 |
N1—C9—C8 | 112.50 (10) | N1—C30—H30B | 109.6 |
N1—C9—C10 | 110.78 (10) | C31—C30—H30B | 109.6 |
C8—C9—C10 | 116.83 (10) | H30A—C30—H30B | 108.1 |
N1—C9—H9 | 105.2 | C36—C31—C32 | 118.35 (13) |
C8—C9—H9 | 105.2 | C36—C31—C30 | 121.53 (13) |
C10—C9—H9 | 105.2 | C32—C31—C30 | 120.13 (12) |
N2—C10—C9 | 110.92 (10) | C33—C32—C31 | 121.00 (14) |
N2—C10—S1 | 124.93 (10) | C33—C32—H32 | 119.5 |
C9—C10—S1 | 123.89 (9) | C31—C32—H32 | 119.5 |
N2—C11—C12 | 107.35 (11) | C34—C33—C32 | 119.92 (16) |
N2—C11—C18 | 110.72 (11) | C34—C33—H33 | 120.0 |
C12—C11—C18 | 114.96 (11) | C32—C33—H33 | 120.0 |
N2—C11—H11 | 107.9 | C35—C34—C33 | 120.09 (15) |
C12—C11—H11 | 107.9 | C35—C34—H34 | 120.0 |
C18—C11—H11 | 107.9 | C33—C34—H34 | 120.0 |
C17—C12—C13 | 119.47 (15) | C34—C35—C36 | 119.74 (16) |
C17—C12—C11 | 122.26 (14) | C34—C35—H35 | 120.1 |
C13—C12—C11 | 117.97 (14) | C36—C35—H35 | 120.1 |
C14—C13—C12 | 120.5 (2) | C31—C36—C35 | 120.86 (15) |
C14—C13—H13 | 119.8 | C31—C36—H36 | 119.6 |
C12—C13—H13 | 119.8 | C35—C36—H36 | 119.6 |
C15—C14—C13 | 120.0 (2) | O1—C37—H37A | 109.5 |
C15—C14—H14 | 120.0 | O1—C37—H37B | 109.5 |
C13—C14—H14 | 120.0 | H37A—C37—H37B | 109.5 |
C14—C15—C16 | 120.67 (18) | O1—C37—H37C | 109.5 |
C14—C15—H15 | 119.7 | H37A—C37—H37C | 109.5 |
C16—C15—H15 | 119.7 | H37B—C37—H37C | 109.5 |
C15—C16—C17 | 120.2 (2) | O2—C38—H38A | 109.5 |
C15—C16—H16 | 119.9 | O2—C38—H38B | 109.5 |
C17—C16—H16 | 119.9 | H38A—C38—H38B | 109.5 |
C12—C17—C16 | 119.16 (19) | O2—C38—H38C | 109.5 |
C12—C17—H17 | 120.4 | H38A—C38—H38C | 109.5 |
C16—C17—H17 | 120.4 | H38B—C38—H38C | 109.5 |
C23—C18—C19 | 118.66 (14) | ||
C9—N1—C1—C2 | −47.06 (13) | N2—C11—C12—C13 | −76.53 (16) |
C30—N1—C1—C2 | 79.40 (12) | C18—C11—C12—C13 | 159.81 (13) |
C9—N1—C1—C24 | 80.27 (11) | C17—C12—C13—C14 | −0.3 (2) |
C30—N1—C1—C24 | −153.27 (10) | C11—C12—C13—C14 | 173.60 (15) |
N1—C1—C2—C7 | 14.37 (17) | C12—C13—C14—C15 | 0.1 (3) |
C24—C1—C2—C7 | −108.15 (14) | C13—C14—C15—C16 | 0.2 (3) |
N1—C1—C2—C3 | −165.91 (11) | C14—C15—C16—C17 | −0.4 (3) |
C24—C1—C2—C3 | 71.57 (14) | C13—C12—C17—C16 | 0.1 (2) |
C7—C2—C3—C4 | 1.25 (18) | C11—C12—C17—C16 | −173.46 (15) |
C1—C2—C3—C4 | −178.48 (11) | C15—C16—C17—C12 | 0.2 (3) |
C37—O1—C4—C3 | −5.03 (19) | N2—C11—C18—C23 | −1.5 (2) |
C37—O1—C4—C5 | 173.83 (13) | C12—C11—C18—C23 | 120.33 (16) |
C2—C3—C4—O1 | 176.79 (12) | N2—C11—C18—C19 | 178.80 (13) |
C2—C3—C4—C5 | −2.03 (19) | C12—C11—C18—C19 | −59.35 (18) |
C38—O2—C5—C6 | −5.5 (2) | C23—C18—C19—C20 | 0.5 (2) |
C38—O2—C5—C4 | 175.76 (14) | C11—C18—C19—C20 | −179.80 (15) |
O1—C4—C5—O2 | 1.68 (17) | C18—C19—C20—C21 | −0.3 (3) |
C3—C4—C5—O2 | −179.38 (11) | C19—C20—C21—C22 | 0.1 (3) |
O1—C4—C5—C6 | −177.17 (12) | C20—C21—C22—C23 | −0.1 (3) |
C3—C4—C5—C6 | 1.76 (19) | C19—C18—C23—C22 | −0.5 (3) |
O2—C5—C6—C7 | −179.48 (13) | C11—C18—C23—C22 | 179.80 (17) |
C4—C5—C6—C7 | −0.7 (2) | C21—C22—C23—C18 | 0.3 (3) |
C3—C2—C7—C6 | −0.20 (18) | N1—C1—C24—C29 | −107.96 (13) |
C1—C2—C7—C6 | 179.52 (11) | C2—C1—C24—C29 | 17.67 (17) |
C3—C2—C7—C8 | −179.26 (12) | N1—C1—C24—C25 | 67.68 (14) |
C1—C2—C7—C8 | 0.47 (19) | C2—C1—C24—C25 | −166.70 (11) |
C5—C6—C7—C2 | 0.0 (2) | C29—C24—C25—C26 | 0.1 (2) |
C5—C6—C7—C8 | 179.06 (12) | C1—C24—C25—C26 | −175.77 (13) |
C2—C7—C8—C9 | 17.38 (17) | C24—C25—C26—C27 | 0.4 (2) |
C6—C7—C8—C9 | −161.69 (11) | C25—C26—C27—C28 | −0.5 (3) |
C1—N1—C9—C8 | 69.61 (13) | C26—C27—C28—C29 | 0.2 (3) |
C30—N1—C9—C8 | −56.79 (13) | C25—C24—C29—C28 | −0.4 (2) |
C1—N1—C9—C10 | −157.57 (10) | C1—C24—C29—C28 | 175.21 (13) |
C30—N1—C9—C10 | 76.03 (12) | C27—C28—C29—C24 | 0.3 (2) |
C7—C8—C9—N1 | −52.47 (14) | C9—N1—C30—C31 | −164.19 (10) |
C7—C8—C9—C10 | 177.76 (10) | C1—N1—C30—C31 | 71.84 (13) |
C11—N2—C10—C9 | 174.98 (12) | N1—C30—C31—C36 | −111.71 (14) |
C11—N2—C10—S1 | 0.6 (2) | N1—C30—C31—C32 | 68.10 (15) |
N1—C9—C10—N2 | 36.60 (14) | C36—C31—C32—C33 | 1.6 (2) |
C8—C9—C10—N2 | 167.18 (11) | C30—C31—C32—C33 | −178.21 (13) |
N1—C9—C10—S1 | −148.92 (10) | C31—C32—C33—C34 | 0.3 (2) |
C8—C9—C10—S1 | −18.34 (16) | C32—C33—C34—C35 | −1.7 (2) |
C10—N2—C11—C12 | 113.87 (15) | C33—C34—C35—C36 | 1.2 (3) |
C10—N2—C11—C18 | −119.91 (14) | C32—C31—C36—C35 | −2.1 (2) |
N2—C11—C12—C17 | 97.16 (15) | C30—C31—C36—C35 | 177.71 (14) |
C18—C11—C12—C17 | −26.50 (19) | C34—C35—C36—C31 | 0.7 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N···N1 | 0.903 (17) | 2.139 (16) | 2.6548 (15) | 115.4 (12) |
Experimental details
Crystal data | |
Chemical formula | C38H36N2O2S |
Mr | 584.75 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 173 |
a, b, c (Å) | 9.0463 (1), 17.6687 (2), 19.6178 (2) |
V (Å3) | 3135.64 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.14 |
Crystal size (mm) | 0.34 × 0.32 × 0.30 |
Data collection | |
Diffractometer | Nonius KappaCCD |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7464, 7464, 6545 |
Rint | 0.013 |
(sin θ/λ)max (Å−1) | 0.659 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.090, 1.06 |
No. of reflections | 7464 |
No. of parameters | 394 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.19, −0.25 |
Absolute structure | Flack (1983), 3271 Friedel pairs |
Absolute structure parameter | −0.07 (5) |
Computer programs: COLLECT (Nonius, 2000), DENZO-SMN (Otwinowski & Minor, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), OLEX2 (Dolomov et al., 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N···N1 | 0.903 (17) | 2.139 (16) | 2.6548 (15) | 115.4 (12) |
Acknowledgements
The authors wish to thank Dr Hong Su from the Chemistry Department of the University of Cape Town for her assistance with the crystallographic data collection and refinement.
References
Dolomanov, O. V., Bourhis, L. J., Gildea, R. J., Howard, J. A. K. & Puschmann, H. (2009). J. Appl. Cryst. 42, 339–341. Web of Science CrossRef CAS IUCr Journals Google Scholar
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Chiral organocatalysts bearing a tetrahydroisoquinoline (TIQ) framework have proven to be very successful by our research group (Naicker et al., 2010 and 2011a). The title compound (Fig. 1) is a precursor in the synthesis of these novel chiral organocatalysts. The crystal structure contains a thioamide moiety at the C10 position making it the first example in this class to be reported.
The absolute stereochemistry of the molecule was confirmed to be R,S at C1 and C9 positions respectively by proton NMR spectroscopy.
The N-containing six membered ring assumes a half chair conformation [Q=0.5212 (12) Å, θ= 50.52 (14)° and φ=325.8 (18)°] similar to an analogous structure which has a methyl ester at the C10 position (Naicker et al., 2011b). This heterocyclic ring shape affects the position of the thioamide moiety relative to the phenyl ring at the C1 position. The torsion angle for C1—N1—C9—C10 is -157.6 (1)°. Also, in the analogous structure the torsion angle between C8—N1—C9—C10 is 44.1 (2)° while in the title structure this angle is -18.3 (2)°. This is probably due to the C═S bond which adopts a more planar orientation relative to the TIQ backbone as compared to the C═O bond orientation previously reported in this family of molecules (Naicker et al., 2011b). In addition, the N-benzyl and phenyl ring at C1 exist in a trans orientation along the N1—C9 bond with a dihedral angle of -153.3 (1)°.
The title compound contains four phenyl rings however, no intermolecular C—H···π or π···π interactions are evident. A single intramolecular hydrogen bond between atoms N2—H1N···N1 can be observed. The molecules within the crystal structure line up such that the phenyl rings face each other, this forms alternating chains parallel to the [100] plane (Fig. 2).