organic compounds
N,1-Bis(4-chloro-2-methylbenzyl)-3-methyl-2-oxo-1,2,3,4-tetrahydroquinoline-3-carboxamide
aDepartment of Chemistry and Biology, Ryerson University, Toronto, Ontario, Canada M5B 2K3, and bDepartment of Chemistry, University of Toronto, 80 St George St, Toronto, Ontario, Canada M5B 2K3
*Correspondence e-mail: alough@chem.utoronto.ca
In the title molecule, C27H26Cl2N2O2, the chloro-substituted benzene rings make dihedral angles of 83.29 (9) and 80.81 (9)° with the benzene ring of the tetrahydroquinoline group. The dihedral angle formed by the two chloro-substituted benzene rings is 40.87 (12)°. The six-membered N-containing ring is in a half-chair conformation. In the intermolecular N—H⋯O hydrogen bonds link molecules into centrosymmetric dimers.
Related literature
For the synthesis of the title compound, see: Porosa & Viirre (2009). For a related see: Wang et al. (2007)
Experimental
Crystal data
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Refinement
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Data collection: COLLECT (Nonius, 2002); cell DENZO-SMN (Otwinowski & Minor, 1997); data reduction: DENZO-SMN; program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536809046765/pv2230sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809046765/pv2230Isup2.hkl
The compound was prepared using the procedure previously described (Porosa & Viirre, 2009), using 2-(2-bromobenzyl)-N,N'-bis(4-chloro-2-methylbenzyl)-2-methylpropanediamide as a starting material. This material was recrystallized from diethylether to obtain small amounts of diffraction quality crystals of the title compound.
H atoms were placed in calculated positions with C—H distances in the range 0.95–0.99 Å; N—H = 0.88Å and included in the
in the riding-model approximation with Uiso(H) = 1.2Ueq(C,N) or Uiso(H) = 1.5Ueq(C) for methyl H atoms.Data collection: COLLECT (Nonius, 2002); cell
DENZO-SMN (Otwinowski & Minor, 1997); data reduction: DENZO-SMN (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C27H26Cl2N2O2 | Z = 2 |
Mr = 481.40 | F(000) = 504 |
Triclinic, P1 | Dx = 1.382 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 10.1394 (6) Å | Cell parameters from 10842 reflections |
b = 10.7095 (6) Å | θ = 2.6–27.5° |
c = 12.2542 (4) Å | µ = 0.31 mm−1 |
α = 82.084 (3)° | T = 150 K |
β = 71.403 (3)° | Block, colourless |
γ = 66.519 (2)° | 0.20 × 0.12 × 0.10 mm |
V = 1156.66 (10) Å3 |
Nonius KappaCCD diffractometer | 5170 independent reflections |
Radiation source: fine-focus sealed tube | 2859 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.067 |
Detector resolution: 9 pixels mm-1 | θmax = 27.5°, θmin = 2.6° |
ϕ scans and ω scans with κ offsets | h = −12→13 |
Absorption correction: multi-scan from symmetry-related measurements (SORTAV; Blessing, 1995) | k = −13→13 |
Tmin = 0.670, Tmax = 0.974 | l = −15→15 |
10842 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.064 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.184 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0886P)2 + 0.0727P] where P = (Fo2 + 2Fc2)/3 |
5170 reflections | (Δ/σ)max = 0.001 |
301 parameters | Δρmax = 0.42 e Å−3 |
0 restraints | Δρmin = −0.30 e Å−3 |
C27H26Cl2N2O2 | γ = 66.519 (2)° |
Mr = 481.40 | V = 1156.66 (10) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.1394 (6) Å | Mo Kα radiation |
b = 10.7095 (6) Å | µ = 0.31 mm−1 |
c = 12.2542 (4) Å | T = 150 K |
α = 82.084 (3)° | 0.20 × 0.12 × 0.10 mm |
β = 71.403 (3)° |
Nonius KappaCCD diffractometer | 5170 independent reflections |
Absorption correction: multi-scan from symmetry-related measurements (SORTAV; Blessing, 1995) | 2859 reflections with I > 2σ(I) |
Tmin = 0.670, Tmax = 0.974 | Rint = 0.067 |
10842 measured reflections |
R[F2 > 2σ(F2)] = 0.064 | 0 restraints |
wR(F2) = 0.184 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.42 e Å−3 |
5170 reflections | Δρmin = −0.30 e Å−3 |
301 parameters |
Experimental. 1H NMR [400 MHz, CDCl3] δH 7.31–6.94 (m, 8H), 6.78 (dd, J = 2 Hz, J = 8 Hz, 1H), 6.63 (dd, J = 8 Hz, J = 14 Hz, 2H), 5.07–4.91 (m, 2H), 4.35 (d, J = 6 Hz, 2H), 3.52 (d, J = 16 Hz, 1H), 3.09 (d, J = 16 Hz, 1H), 2.36 (s, 3H), 2.15 (s, 3H), 1.57 (s, 3H). HRMS (EI-TOF) calculated for C27H27N2O2 (M + H)+ 481.1450; observed 481.1426. HPLC (Chiralcel OD—H column, eluting with 0.65 ml/min 10% i-PrOH:hexanes), tR minor = 20.8 min (peak area = 181909), tR major = 24.5 min (peak area = 9489431), enantiomer ratio = 98:2, 96% ee. |
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 | ||
Cl1 | 0.21891 (11) | 0.99149 (9) | 1.07942 (7) | 0.0631 (3) | |
Cl2 | 0.43748 (10) | 0.28380 (10) | −0.14948 (6) | 0.0707 (3) | |
O1 | 0.4463 (2) | 0.5129 (2) | 0.39762 (16) | 0.0514 (6) | |
O2 | 0.0270 (2) | 0.8179 (2) | 0.61445 (16) | 0.0507 (6) | |
N1 | 0.2188 (3) | 0.5470 (2) | 0.37995 (18) | 0.0405 (6) | |
N2 | 0.2249 (3) | 0.6438 (2) | 0.65164 (18) | 0.0424 (6) | |
H1N | 0.3172 | 0.5853 | 0.6235 | 0.051* | |
C1 | 0.3161 (4) | 0.5882 (3) | 0.4071 (2) | 0.0408 (7) | |
C2 | 0.2518 (3) | 0.7334 (3) | 0.4536 (2) | 0.0405 (7) | |
C3 | 0.1526 (3) | 0.8275 (3) | 0.3812 (2) | 0.0430 (7) | |
H3A | 0.1013 | 0.9195 | 0.4152 | 0.052* | |
H3B | 0.2167 | 0.8351 | 0.3025 | 0.052* | |
C4 | 0.0378 (3) | 0.7782 (3) | 0.3742 (2) | 0.0411 (7) | |
C5 | −0.1028 (4) | 0.8655 (3) | 0.3656 (2) | 0.0497 (8) | |
H5A | −0.1286 | 0.9611 | 0.3659 | 0.060* | |
C6 | −0.2068 (4) | 0.8164 (4) | 0.3567 (2) | 0.0548 (9) | |
H6A | −0.3029 | 0.8779 | 0.3516 | 0.066* | |
C7 | −0.1698 (4) | 0.6789 (4) | 0.3551 (2) | 0.0474 (8) | |
H7A | −0.2405 | 0.6453 | 0.3482 | 0.057* | |
C8 | −0.0307 (4) | 0.5881 (3) | 0.3635 (2) | 0.0453 (8) | |
H8A | −0.0058 | 0.4928 | 0.3619 | 0.054* | |
C9 | 0.0724 (3) | 0.6375 (3) | 0.3742 (2) | 0.0392 (7) | |
C10 | 0.3780 (3) | 0.7793 (3) | 0.4494 (2) | 0.0474 (8) | |
H10A | 0.3347 | 0.8697 | 0.4836 | 0.071* | |
H10B | 0.4370 | 0.7834 | 0.3692 | 0.071* | |
H10C | 0.4433 | 0.7143 | 0.4928 | 0.071* | |
C11 | 0.1555 (3) | 0.7353 (3) | 0.5808 (2) | 0.0411 (7) | |
C12 | 0.1485 (4) | 0.6406 (3) | 0.7743 (2) | 0.0430 (7) | |
H12A | 0.1870 | 0.5458 | 0.8029 | 0.052* | |
H12B | 0.0400 | 0.6670 | 0.7844 | 0.052* | |
C13 | 0.1659 (3) | 0.7323 (3) | 0.8486 (2) | 0.0391 (7) | |
C14 | 0.2568 (3) | 0.8058 (3) | 0.8039 (2) | 0.0436 (8) | |
H14A | 0.3098 | 0.7996 | 0.7242 | 0.052* | |
C15 | 0.2724 (4) | 0.8887 (3) | 0.8728 (3) | 0.0475 (8) | |
H15A | 0.3325 | 0.9413 | 0.8407 | 0.057* | |
C16 | 0.1988 (4) | 0.8925 (3) | 0.9887 (3) | 0.0448 (8) | |
C17 | 0.1071 (4) | 0.8214 (3) | 1.0353 (2) | 0.0443 (8) | |
H17A | 0.0565 | 0.8265 | 1.1155 | 0.053* | |
C18 | 0.0882 (3) | 0.7424 (3) | 0.9662 (2) | 0.0409 (7) | |
C19 | −0.0146 (4) | 0.6665 (4) | 1.0202 (3) | 0.0611 (10) | |
H19A | −0.0770 | 0.7029 | 1.0969 | 0.092* | |
H19B | 0.0457 | 0.5696 | 1.0270 | 0.092* | |
H19C | −0.0793 | 0.6777 | 0.9719 | 0.092* | |
C20 | 0.2704 (4) | 0.4028 (3) | 0.3528 (2) | 0.0426 (7) | |
H20A | 0.1903 | 0.3687 | 0.3957 | 0.051* | |
H20B | 0.3596 | 0.3506 | 0.3801 | 0.051* | |
C21 | 0.3107 (3) | 0.3756 (3) | 0.2262 (2) | 0.0353 (7) | |
C22 | 0.3173 (3) | 0.4763 (3) | 0.1428 (2) | 0.0443 (8) | |
H22A | 0.2943 | 0.5657 | 0.1655 | 0.053* | |
C23 | 0.3568 (3) | 0.4491 (3) | 0.0266 (2) | 0.0454 (8) | |
H23A | 0.3613 | 0.5185 | −0.0301 | 0.055* | |
C24 | 0.3888 (3) | 0.3208 (3) | −0.0038 (2) | 0.0441 (8) | |
C25 | 0.3860 (3) | 0.2177 (3) | 0.0767 (2) | 0.0454 (8) | |
H25A | 0.4117 | 0.1284 | 0.0523 | 0.054* | |
C26 | 0.3458 (3) | 0.2435 (3) | 0.1934 (2) | 0.0387 (7) | |
C27 | 0.3438 (4) | 0.1298 (3) | 0.2814 (3) | 0.0522 (8) | |
H27A | 0.3800 | 0.0437 | 0.2417 | 0.078* | |
H27B | 0.2409 | 0.1496 | 0.3314 | 0.078* | |
H27C | 0.4092 | 0.1224 | 0.3280 | 0.078* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0762 (7) | 0.0576 (6) | 0.0658 (5) | −0.0194 (5) | −0.0375 (5) | −0.0109 (4) |
Cl2 | 0.0653 (6) | 0.0933 (7) | 0.0363 (4) | −0.0069 (5) | −0.0133 (4) | −0.0228 (4) |
O1 | 0.0427 (14) | 0.0520 (14) | 0.0461 (12) | 0.0041 (11) | −0.0187 (10) | −0.0131 (10) |
O2 | 0.0403 (13) | 0.0555 (14) | 0.0385 (11) | −0.0003 (11) | −0.0087 (9) | −0.0066 (9) |
N1 | 0.0423 (15) | 0.0379 (14) | 0.0337 (12) | −0.0024 (12) | −0.0141 (11) | −0.0091 (10) |
N2 | 0.0396 (14) | 0.0446 (15) | 0.0334 (12) | −0.0037 (12) | −0.0110 (10) | −0.0071 (10) |
C1 | 0.045 (2) | 0.0413 (18) | 0.0271 (14) | −0.0046 (16) | −0.0121 (13) | −0.0058 (12) |
C2 | 0.0418 (18) | 0.0402 (17) | 0.0308 (14) | −0.0047 (14) | −0.0098 (12) | −0.0083 (12) |
C3 | 0.0456 (19) | 0.0413 (18) | 0.0332 (15) | −0.0070 (15) | −0.0096 (13) | −0.0066 (12) |
C4 | 0.0429 (19) | 0.0440 (19) | 0.0269 (14) | −0.0046 (15) | −0.0116 (12) | −0.0037 (12) |
C5 | 0.051 (2) | 0.0443 (19) | 0.0386 (16) | 0.0018 (16) | −0.0163 (14) | −0.0055 (13) |
C6 | 0.0394 (19) | 0.074 (3) | 0.0366 (16) | −0.0004 (18) | −0.0167 (14) | −0.0091 (15) |
C7 | 0.044 (2) | 0.061 (2) | 0.0354 (15) | −0.0155 (18) | −0.0116 (13) | −0.0064 (14) |
C8 | 0.050 (2) | 0.050 (2) | 0.0308 (14) | −0.0141 (17) | −0.0097 (13) | −0.0054 (12) |
C9 | 0.0388 (18) | 0.0443 (19) | 0.0255 (13) | −0.0053 (15) | −0.0083 (12) | −0.0069 (12) |
C10 | 0.0461 (19) | 0.053 (2) | 0.0396 (16) | −0.0152 (16) | −0.0089 (13) | −0.0086 (13) |
C11 | 0.0432 (19) | 0.0417 (18) | 0.0369 (15) | −0.0083 (15) | −0.0149 (13) | −0.0115 (13) |
C12 | 0.0493 (19) | 0.0435 (18) | 0.0362 (15) | −0.0140 (15) | −0.0160 (13) | −0.0026 (12) |
C13 | 0.0329 (17) | 0.0429 (17) | 0.0357 (15) | −0.0049 (14) | −0.0137 (12) | −0.0021 (12) |
C14 | 0.0375 (18) | 0.053 (2) | 0.0361 (15) | −0.0120 (16) | −0.0111 (13) | −0.0019 (13) |
C15 | 0.0445 (19) | 0.054 (2) | 0.0483 (18) | −0.0209 (16) | −0.0182 (14) | 0.0041 (14) |
C16 | 0.0471 (19) | 0.0397 (18) | 0.0481 (17) | −0.0055 (16) | −0.0259 (15) | −0.0072 (13) |
C17 | 0.051 (2) | 0.0436 (18) | 0.0330 (15) | −0.0102 (16) | −0.0142 (13) | −0.0029 (13) |
C18 | 0.0430 (18) | 0.0399 (18) | 0.0361 (15) | −0.0122 (15) | −0.0124 (13) | 0.0027 (12) |
C19 | 0.074 (3) | 0.075 (3) | 0.0436 (18) | −0.039 (2) | −0.0172 (16) | 0.0029 (16) |
C20 | 0.0511 (19) | 0.0363 (17) | 0.0345 (14) | −0.0058 (15) | −0.0161 (13) | −0.0062 (12) |
C21 | 0.0289 (16) | 0.0395 (17) | 0.0326 (14) | −0.0075 (13) | −0.0088 (11) | −0.0022 (12) |
C22 | 0.0501 (19) | 0.0404 (18) | 0.0349 (15) | −0.0083 (15) | −0.0110 (13) | −0.0076 (13) |
C23 | 0.0410 (18) | 0.054 (2) | 0.0331 (15) | −0.0115 (16) | −0.0091 (13) | 0.0000 (13) |
C24 | 0.0327 (17) | 0.059 (2) | 0.0344 (15) | −0.0081 (15) | −0.0097 (12) | −0.0116 (14) |
C25 | 0.0397 (18) | 0.0457 (19) | 0.0499 (18) | −0.0116 (15) | −0.0105 (14) | −0.0184 (14) |
C26 | 0.0295 (16) | 0.0445 (19) | 0.0399 (15) | −0.0111 (14) | −0.0069 (12) | −0.0098 (13) |
C27 | 0.056 (2) | 0.0424 (19) | 0.0528 (19) | −0.0165 (17) | −0.0097 (15) | −0.0045 (14) |
Cl1—C16 | 1.744 (3) | C12—H12A | 0.9900 |
Cl2—C24 | 1.750 (3) | C12—H12B | 0.9900 |
O1—C1 | 1.219 (3) | C13—C14 | 1.381 (4) |
O2—C11 | 1.220 (3) | C13—C18 | 1.400 (4) |
N1—C1 | 1.369 (4) | C14—C15 | 1.389 (4) |
N1—C9 | 1.432 (4) | C14—H14A | 0.9500 |
N1—C20 | 1.468 (4) | C15—C16 | 1.375 (4) |
N2—C11 | 1.347 (4) | C15—H15A | 0.9500 |
N2—C12 | 1.458 (3) | C16—C17 | 1.370 (4) |
N2—H1N | 0.8800 | C17—C18 | 1.379 (4) |
C1—C2 | 1.539 (4) | C17—H17A | 0.9500 |
C2—C3 | 1.526 (4) | C18—C19 | 1.507 (4) |
C2—C10 | 1.528 (4) | C19—H19A | 0.9800 |
C2—C11 | 1.551 (4) | C19—H19B | 0.9800 |
C3—C4 | 1.486 (4) | C19—H19C | 0.9800 |
C3—H3A | 0.9900 | C20—C21 | 1.511 (3) |
C3—H3B | 0.9900 | C20—H20A | 0.9900 |
C4—C5 | 1.387 (4) | C20—H20B | 0.9900 |
C4—C9 | 1.404 (4) | C21—C22 | 1.387 (4) |
C5—C6 | 1.390 (5) | C21—C26 | 1.398 (4) |
C5—H5A | 0.9500 | C22—C23 | 1.389 (4) |
C6—C7 | 1.369 (5) | C22—H22A | 0.9500 |
C6—H6A | 0.9500 | C23—C24 | 1.357 (4) |
C7—C8 | 1.385 (4) | C23—H23A | 0.9500 |
C7—H7A | 0.9500 | C24—C25 | 1.379 (4) |
C8—C9 | 1.392 (4) | C25—C26 | 1.390 (4) |
C8—H8A | 0.9500 | C25—H25A | 0.9500 |
C10—H10A | 0.9800 | C26—C27 | 1.513 (4) |
C10—H10B | 0.9800 | C27—H27A | 0.9800 |
C10—H10C | 0.9800 | C27—H27B | 0.9800 |
C12—C13 | 1.519 (4) | C27—H27C | 0.9800 |
C1—N1—C9 | 123.4 (2) | C14—C13—C18 | 118.7 (3) |
C1—N1—C20 | 117.6 (2) | C14—C13—C12 | 122.1 (2) |
C9—N1—C20 | 119.0 (2) | C18—C13—C12 | 119.2 (3) |
C11—N2—C12 | 120.7 (2) | C13—C14—C15 | 121.5 (3) |
C11—N2—H1N | 119.7 | C13—C14—H14A | 119.2 |
C12—N2—H1N | 119.7 | C15—C14—H14A | 119.2 |
O1—C1—N1 | 121.9 (3) | C16—C15—C14 | 118.3 (3) |
O1—C1—C2 | 121.4 (3) | C16—C15—H15A | 120.9 |
N1—C1—C2 | 116.6 (3) | C14—C15—H15A | 120.9 |
C3—C2—C10 | 111.2 (2) | C17—C16—C15 | 121.5 (3) |
C3—C2—C1 | 108.0 (2) | C17—C16—Cl1 | 118.5 (2) |
C10—C2—C1 | 110.8 (2) | C15—C16—Cl1 | 120.0 (3) |
C3—C2—C11 | 109.5 (2) | C16—C17—C18 | 120.1 (3) |
C10—C2—C11 | 108.2 (2) | C16—C17—H17A | 119.9 |
C1—C2—C11 | 109.1 (2) | C18—C17—H17A | 119.9 |
C4—C3—C2 | 112.5 (2) | C17—C18—C13 | 119.8 (3) |
C4—C3—H3A | 109.1 | C17—C18—C19 | 118.7 (3) |
C2—C3—H3A | 109.1 | C13—C18—C19 | 121.5 (3) |
C4—C3—H3B | 109.1 | C18—C19—H19A | 109.5 |
C2—C3—H3B | 109.1 | C18—C19—H19B | 109.5 |
H3A—C3—H3B | 107.8 | H19A—C19—H19B | 109.5 |
C5—C4—C9 | 118.0 (3) | C18—C19—H19C | 109.5 |
C5—C4—C3 | 122.7 (3) | H19A—C19—H19C | 109.5 |
C9—C4—C3 | 119.3 (3) | H19B—C19—H19C | 109.5 |
C4—C5—C6 | 121.5 (3) | N1—C20—C21 | 114.2 (2) |
C4—C5—H5A | 119.3 | N1—C20—H20A | 108.7 |
C6—C5—H5A | 119.3 | C21—C20—H20A | 108.7 |
C7—C6—C5 | 119.5 (3) | N1—C20—H20B | 108.7 |
C7—C6—H6A | 120.2 | C21—C20—H20B | 108.7 |
C5—C6—H6A | 120.2 | H20A—C20—H20B | 107.6 |
C6—C7—C8 | 120.9 (3) | C22—C21—C26 | 119.7 (2) |
C6—C7—H7A | 119.6 | C22—C21—C20 | 122.0 (3) |
C8—C7—H7A | 119.6 | C26—C21—C20 | 118.3 (2) |
C7—C8—C9 | 119.4 (3) | C21—C22—C23 | 121.3 (3) |
C7—C8—H8A | 120.3 | C21—C22—H22A | 119.4 |
C9—C8—H8A | 120.3 | C23—C22—H22A | 119.4 |
C8—C9—C4 | 120.7 (3) | C24—C23—C22 | 118.3 (3) |
C8—C9—N1 | 121.1 (3) | C24—C23—H23A | 120.8 |
C4—C9—N1 | 118.2 (3) | C22—C23—H23A | 120.8 |
C2—C10—H10A | 109.5 | C23—C24—C25 | 121.9 (3) |
C2—C10—H10B | 109.5 | C23—C24—Cl2 | 119.3 (2) |
H10A—C10—H10B | 109.5 | C25—C24—Cl2 | 118.8 (2) |
C2—C10—H10C | 109.5 | C24—C25—C26 | 120.5 (3) |
H10A—C10—H10C | 109.5 | C24—C25—H25A | 119.8 |
H10B—C10—H10C | 109.5 | C26—C25—H25A | 119.8 |
O2—C11—N2 | 122.7 (3) | C25—C26—C21 | 118.3 (3) |
O2—C11—C2 | 121.6 (3) | C25—C26—C27 | 120.3 (3) |
N2—C11—C2 | 115.6 (2) | C21—C26—C27 | 121.4 (2) |
N2—C12—C13 | 115.5 (2) | C26—C27—H27A | 109.5 |
N2—C12—H12A | 108.4 | C26—C27—H27B | 109.5 |
C13—C12—H12A | 108.4 | H27A—C27—H27B | 109.5 |
N2—C12—H12B | 108.4 | C26—C27—H27C | 109.5 |
C13—C12—H12B | 108.4 | H27A—C27—H27C | 109.5 |
H12A—C12—H12B | 107.5 | H27B—C27—H27C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N···O1i | 0.88 | 2.14 | 2.972 (3) | 157 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C27H26Cl2N2O2 |
Mr | 481.40 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 150 |
a, b, c (Å) | 10.1394 (6), 10.7095 (6), 12.2542 (4) |
α, β, γ (°) | 82.084 (3), 71.403 (3), 66.519 (2) |
V (Å3) | 1156.66 (10) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.31 |
Crystal size (mm) | 0.20 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Nonius KappaCCD diffractometer |
Absorption correction | Multi-scan from symmetry-related measurements (SORTAV; Blessing, 1995) |
Tmin, Tmax | 0.670, 0.974 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10842, 5170, 2859 |
Rint | 0.067 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.064, 0.184, 1.02 |
No. of reflections | 5170 |
No. of parameters | 301 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.42, −0.30 |
Computer programs: COLLECT (Nonius, 2002), DENZO-SMN (Otwinowski & Minor, 1997), SIR92 (Altomare et al., 1994), SHELXTL (Sheldrick, 2008), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N···O1i | 0.88 | 2.14 | 2.972 (3) | 156.9 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Acknowledgements
The authors are grateful for financial support from the American Chemical Society Petroleum Research Fund, the Dean's Seed Fund Initiative (Ryerson University), NSERC Canada and the University of Toronto.
References
Altomare, A., Cascarano, G., Giacovazzo, C., Guagliardi, A., Burla, M. C., Polidori, G. & Camalli, M. (1994). J. Appl. Cryst. 27, 435. CrossRef Web of Science IUCr Journals Google Scholar
Blessing, R. H. (1995). Acta Cryst. A51, 33–38. CrossRef CAS Web of Science IUCr Journals Google Scholar
Nonius (2002). COLLECT. Nonius BV, Delft, The Netherlands. Google Scholar
Otwinowski, Z. & Minor, W. (1997). Methods in Enzymology, Vol. 276, Macromolecular Crystallography, Part A, edited by C. W. Carter Jr & R. M. Sweet, pp. 307–326. New York: Academic Press. Google Scholar
Porosa, L. & Viirre, R. D. (2009). Tetrahedron Lett. 50, 4170–4173. Web of Science CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
Wang, X.-S., Zhang, M.-M., Zeng, Z.-S., Shi, D.-Q., Tu, S.-J., Wei, X.-Y. & Zong, Z.-M. (2007). J. Heterocycl. Chem. 44, 441–447. CrossRef CAS Google Scholar
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.
The title compound was prepared by an intramolecular Buchwald-Hartwig reaction of the corresponding malonamide under conditions we have previously described (Porosa & Viirre, 2009) (Fig. 3). The intention in this reaction was to preferentially arylate one of the two enantiotopic nitrogen atoms in the malonamide by exploiting the chiral influence of (R)-MOP ((R)-(+)-2-(diphenylphosphino)-2'-methoxy-1,1'-binaphthyl) as a catalyst component. Indeed, chiral HPLC analysis of the product indicated the highest enantioselectivity we have yet observed in this reaction, at 96% ee. It was hoped that the configuration of the major enantiomer could be determined from a crystal structure in order to correlate product and catalyst configuration and aid in the development of a mechanistic model for the reaction. The initially isolated product with 96% ee was a very viscous yellow oil. This was dissolved in diethyl ether and left to stand undisturbed at room temperature for several days. Upon evaporation of most of the solvent, a yellow oil was again obtained, but dispersed within it were small clear crystals. One of the single crystals was subjected to X-ray diffraction analysis and the crystal structure is reported herein.
The molecular structure of the title compound is shown in Fig. 1. To our surprise, it crystallized in a centrosymmetric space group. As there is no apparent mechanism by which the quaternary chiral center can epimerize, this demonstrates an impressive propensity for the racemate (essentially a 4% impurity in the initial product) to crystallize in preference to enantiopure material. In the title molecule, the C13—C18 and C21—C26 benzene rings form dihedral angles of 83.29 (9) and 80.81 (9)°, respectively with the C4—C9 benzene ring. The dihedral angle formed by the C13—C18 and C21—C26 benzene rings is 40.87 (12) °. The C1—C4/C9/N1 ring is in a half-chair conformation. In the crystal structure, intermolecular N—H···O hydrogen bonds link molecules into centrosymmetric dimers (Fig. 2).
Work is currently underway to crystallize enantiopure material.