organic compounds
Isopropyl 1-benzoyl-4-benzoyloxy-2,6-diphenyl-1,2,3,6-tetrahydropyridine-3-carboxylate
aDepartment of Physics, Presidency College (Autonomous), Chennai 600 005, India, and bDepartment of Chemistry, Saveetha Engineering College, Chennai, India
*Correspondence e-mail: a_sp59@yahoo.in
In the title compound, C35H31NO5, the piperidine ring has an with the phenyl-substituted C atom adjacent to the methylene C atom as the flap. This flap atom deviates by 0.633 (2) Å from the mean plane of the other five essentially coplanar atoms in the ring (r.m.s. deviation = 0.044 Å). Intramolecular C—H⋯O hydrogen bonds form S(7) and S(9) ring motifs. In the crystal, molecules are linked by pairs of C—H⋯O hydrogen bonds, forming inversion dimers with R22(16) loops.
Keywords: crystal structure.
CCDC reference: 1010935
Related literature
For general background to piperidine derivatives, see: Mishra & Ghosh (2011); Ramachandran et al. (2011); Natarajan & Mathews (2011). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
CCDC reference: 1010935
10.1107/S1600536814015244/nk2218sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814015244/nk2218Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814015244/nk2218Isup3.cml
3-Isopropyl-2,6-diphenylpiperidin-4-one carboxylate were syntheized by Mannich condensation of benzaldehyde with isopropyl acetoacetate. Isopropyl acetoacetate (0.01 mol), benzaldehydes (0.02 mol) and ammonium acetate (0.01 mol) were taken in a 500 ml round bottom flask. Further ethanol (25 ml) was added to the flask, warmed for about 10 min. and set aside until the product crystallized. The product obtained was filtered and the solid product was collected and washed with cold water. The product was dried at room temperature and recrystallized from ethanol to obtain 3-isopropyl-2,6-diphenylpiperidin-4-one carboxylate. Equimolar amounts of 3-isopropyl-2,6-diphenylpiperidin -4-one carboxylate (3.37 g, 100 mmol), benzoyl chloride (2 ml, 100 mmol) ethylene triamine (2 ml, 200 mmol) and benzene (50 ml) were heated to reflux for 6–10 h. The reaction was monitored by TLC, after completion of the reaction solvent was washed with 2 N HCl followed by water. solvent was removed under vacuum and the residue was recrystalized form ethanol. The yield of the isolated product was 2.65 g (70%).
All H atoms were fixed geometrically and allowed to ride on their parent C atoms, with C—H distances fixed in the range 0.93–0.97 Å with Uiso(H) = 1.5Ueq(C) for methyl H atoms and 1.2Ueq(C) for all other H atoms.
Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).C35H31NO5 | V = 1419.08 (15) Å3 |
Mr = 545.61 | Z = 2 |
Triclinic, P1 | F(000) = 576 |
Hall symbol: -P 1 | Dx = 1.277 Mg m−3 |
a = 10.1788 (6) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 11.4325 (7) Å | µ = 0.09 mm−1 |
c = 13.1395 (9) Å | T = 293 K |
α = 81.847 (2)° | Block, white |
β = 86.662 (3)° | 0.22 × 0.19 × 0.17 mm |
γ = 69.654 (2)° |
Bruker SMART APEXII CCD diffractometer | 4996 independent reflections |
Radiation source: fine-focus sealed tube | 3876 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
ω and ϕ scans | θmax = 25.0°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −11→12 |
Tmin = 0.952, Tmax = 0.959 | k = −13→13 |
25561 measured reflections | l = −15→15 |
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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.109 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0614P)2 + 0.1791P] where P = (Fo2 + 2Fc2)/3 |
4996 reflections | (Δ/σ)max = 0.001 |
372 parameters | Δρmax = 0.21 e Å−3 |
0 restraints | Δρmin = −0.17 e Å−3 |
C35H31NO5 | γ = 69.654 (2)° |
Mr = 545.61 | V = 1419.08 (15) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.1788 (6) Å | Mo Kα radiation |
b = 11.4325 (7) Å | µ = 0.09 mm−1 |
c = 13.1395 (9) Å | T = 293 K |
α = 81.847 (2)° | 0.22 × 0.19 × 0.17 mm |
β = 86.662 (3)° |
Bruker SMART APEXII CCD diffractometer | 4996 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 3876 reflections with I > 2σ(I) |
Tmin = 0.952, Tmax = 0.959 | Rint = 0.028 |
25561 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 0 restraints |
wR(F2) = 0.109 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.21 e Å−3 |
4996 reflections | Δρmin = −0.17 e Å−3 |
372 parameters |
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 | ||
C20 | 0.96506 (16) | 0.08716 (14) | 0.67253 (11) | 0.0519 (4) | |
H20 | 0.8967 | 0.0763 | 0.6347 | 0.062* | |
C21 | 1.09259 (18) | 0.08065 (17) | 0.62695 (13) | 0.0646 (5) | |
H21 | 1.1096 | 0.0652 | 0.5589 | 0.078* | |
C22 | 1.19444 (18) | 0.09692 (18) | 0.68161 (14) | 0.0673 (5) | |
H22 | 1.2805 | 0.0924 | 0.6510 | 0.081* | |
C23 | 1.16822 (16) | 0.11983 (17) | 0.78179 (13) | 0.0614 (4) | |
H23 | 1.2365 | 0.1317 | 0.8189 | 0.074* | |
C24 | 1.04077 (15) | 0.12537 (14) | 0.82808 (12) | 0.0490 (4) | |
H24 | 1.0246 | 0.1399 | 0.8963 | 0.059* | |
C19 | 0.93736 (14) | 0.10950 (12) | 0.77359 (10) | 0.0405 (3) | |
C1 | 0.79798 (13) | 0.10671 (12) | 0.82094 (10) | 0.0395 (3) | |
H1 | 0.7885 | 0.0281 | 0.8069 | 0.047* | |
C2 | 0.78325 (14) | 0.10737 (12) | 0.93686 (10) | 0.0415 (3) | |
H2B | 0.7113 | 0.0729 | 0.9625 | 0.050* | |
H2A | 0.8709 | 0.0539 | 0.9692 | 0.050* | |
C3 | 0.74623 (13) | 0.23572 (12) | 0.96537 (10) | 0.0386 (3) | |
C4 | 0.69662 (13) | 0.34103 (12) | 0.90037 (10) | 0.0386 (3) | |
C5 | 0.65643 (14) | 0.33967 (12) | 0.79121 (10) | 0.0392 (3) | |
H5 | 0.5551 | 0.3845 | 0.7874 | 0.047* | |
C6 | 0.72113 (14) | 0.41264 (12) | 0.70991 (10) | 0.0407 (3) | |
C7 | 0.84932 (16) | 0.42433 (14) | 0.72253 (12) | 0.0520 (4) | |
H7 | 0.9004 | 0.3847 | 0.7818 | 0.062* | |
C8 | 0.90280 (18) | 0.49434 (16) | 0.64800 (13) | 0.0622 (4) | |
H8 | 0.9897 | 0.5011 | 0.6571 | 0.075* | |
C9 | 0.8275 (2) | 0.55393 (15) | 0.56055 (13) | 0.0617 (4) | |
H9 | 0.8636 | 0.6008 | 0.5104 | 0.074* | |
C10 | 0.6998 (2) | 0.54443 (14) | 0.54719 (11) | 0.0586 (4) | |
H10 | 0.6488 | 0.5851 | 0.4881 | 0.070* | |
C11 | 0.64622 (16) | 0.47421 (13) | 0.62156 (11) | 0.0482 (4) | |
H11 | 0.5590 | 0.4683 | 0.6121 | 0.058* | |
C32 | 0.66009 (14) | 0.46966 (13) | 0.93018 (10) | 0.0428 (3) | |
C33 | 0.72277 (18) | 0.59541 (14) | 1.03681 (13) | 0.0607 (4) | |
H33 | 0.6229 | 0.6459 | 1.0317 | 0.073* | |
C34 | 0.7649 (3) | 0.56499 (19) | 1.14784 (15) | 0.0892 (6) | |
H34A | 0.8630 | 0.5163 | 1.1528 | 0.134* | |
H34B | 0.7118 | 0.5175 | 1.1849 | 0.134* | |
H34C | 0.7469 | 0.6417 | 1.1768 | 0.134* | |
C35 | 0.8054 (3) | 0.6625 (2) | 0.97090 (19) | 0.0940 (7) | |
H35A | 0.7820 | 0.7460 | 0.9887 | 0.141* | |
H35B | 0.7838 | 0.6671 | 0.9000 | 0.141* | |
H35C | 0.9036 | 0.6175 | 0.9816 | 0.141* | |
N1 | 0.67724 (11) | 0.21014 (10) | 0.77234 (8) | 0.0401 (3) | |
O1 | 0.56508 (11) | 0.55833 (9) | 0.89218 (8) | 0.0572 (3) | |
O2 | 0.74703 (10) | 0.47477 (9) | 1.00008 (8) | 0.0530 (3) | |
O3 | 0.74902 (9) | 0.24164 (9) | 1.07066 (7) | 0.0441 (2) | |
O4 | 0.98397 (11) | 0.18061 (10) | 1.06863 (8) | 0.0535 (3) | |
O5 | 0.48623 (13) | 0.27894 (10) | 0.67147 (10) | 0.0748 (4) | |
C25 | 0.87486 (15) | 0.21460 (12) | 1.11539 (11) | 0.0409 (3) | |
C26 | 0.86017 (15) | 0.23327 (12) | 1.22445 (10) | 0.0430 (3) | |
C13 | 0.58887 (14) | 0.05921 (14) | 0.70980 (11) | 0.0468 (4) | |
C12 | 0.58068 (15) | 0.19148 (14) | 0.71550 (11) | 0.0484 (4) | |
C31 | 0.73276 (17) | 0.26105 (15) | 1.27588 (12) | 0.0569 (4) | |
H31 | 0.6523 | 0.2683 | 1.2417 | 0.068* | |
C27 | 0.97936 (17) | 0.22454 (14) | 1.27551 (12) | 0.0523 (4) | |
H27 | 1.0651 | 0.2061 | 1.2410 | 0.063* | |
C14 | 0.62173 (17) | 0.00964 (16) | 0.61776 (13) | 0.0605 (4) | |
H14 | 0.6427 | 0.0573 | 0.5599 | 0.073* | |
C18 | 0.55352 (17) | −0.01192 (15) | 0.79366 (13) | 0.0552 (4) | |
H18 | 0.5299 | 0.0206 | 0.8558 | 0.066* | |
C17 | 0.55295 (18) | −0.13089 (16) | 0.78597 (15) | 0.0656 (5) | |
H17 | 0.5275 | −0.1776 | 0.8425 | 0.079* | |
C30 | 0.7256 (2) | 0.27799 (17) | 1.37821 (13) | 0.0691 (5) | |
H30 | 0.6404 | 0.2951 | 1.4134 | 0.083* | |
C28 | 0.9705 (2) | 0.24314 (16) | 1.37712 (13) | 0.0638 (5) | |
H28 | 1.0503 | 0.2377 | 1.4113 | 0.077* | |
C29 | 0.8442 (2) | 0.26963 (16) | 1.42834 (13) | 0.0690 (5) | |
H29 | 0.8388 | 0.2820 | 1.4971 | 0.083* | |
C16 | 0.58985 (19) | −0.18005 (17) | 0.69509 (16) | 0.0696 (5) | |
H16 | 0.5920 | −0.2611 | 0.6904 | 0.084* | |
C15 | 0.62343 (19) | −0.11043 (18) | 0.61150 (16) | 0.0704 (5) | |
H15 | 0.6477 | −0.1440 | 0.5498 | 0.084* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C20 | 0.0513 (9) | 0.0568 (9) | 0.0435 (9) | −0.0144 (7) | −0.0085 (7) | −0.0009 (7) |
C21 | 0.0614 (11) | 0.0797 (12) | 0.0432 (9) | −0.0157 (9) | 0.0018 (8) | −0.0006 (8) |
C22 | 0.0450 (9) | 0.0867 (13) | 0.0607 (11) | −0.0155 (9) | 0.0049 (8) | 0.0003 (9) |
C23 | 0.0402 (9) | 0.0773 (11) | 0.0652 (11) | −0.0170 (8) | −0.0040 (8) | −0.0111 (9) |
C24 | 0.0401 (8) | 0.0544 (9) | 0.0483 (9) | −0.0094 (7) | −0.0061 (7) | −0.0082 (7) |
C19 | 0.0381 (7) | 0.0337 (7) | 0.0433 (8) | −0.0055 (6) | −0.0063 (6) | −0.0001 (6) |
C1 | 0.0383 (7) | 0.0337 (7) | 0.0432 (8) | −0.0086 (6) | −0.0095 (6) | −0.0002 (5) |
C2 | 0.0384 (7) | 0.0381 (7) | 0.0443 (8) | −0.0107 (6) | −0.0072 (6) | 0.0032 (6) |
C3 | 0.0324 (7) | 0.0455 (7) | 0.0350 (7) | −0.0104 (6) | −0.0019 (5) | −0.0027 (6) |
C4 | 0.0333 (7) | 0.0388 (7) | 0.0404 (7) | −0.0090 (6) | −0.0033 (6) | −0.0021 (6) |
C5 | 0.0349 (7) | 0.0350 (7) | 0.0430 (8) | −0.0066 (5) | −0.0080 (6) | −0.0003 (5) |
C6 | 0.0444 (8) | 0.0334 (7) | 0.0402 (8) | −0.0081 (6) | −0.0023 (6) | −0.0043 (5) |
C7 | 0.0480 (9) | 0.0497 (8) | 0.0536 (9) | −0.0139 (7) | −0.0062 (7) | 0.0039 (7) |
C8 | 0.0566 (10) | 0.0623 (10) | 0.0680 (11) | −0.0247 (8) | 0.0062 (8) | −0.0013 (8) |
C9 | 0.0815 (12) | 0.0510 (9) | 0.0515 (10) | −0.0248 (9) | 0.0148 (9) | −0.0041 (7) |
C10 | 0.0828 (12) | 0.0497 (9) | 0.0387 (8) | −0.0182 (8) | −0.0062 (8) | −0.0005 (7) |
C11 | 0.0579 (9) | 0.0428 (8) | 0.0416 (8) | −0.0138 (7) | −0.0097 (7) | −0.0030 (6) |
C32 | 0.0387 (8) | 0.0426 (8) | 0.0432 (8) | −0.0103 (6) | 0.0004 (6) | −0.0031 (6) |
C33 | 0.0617 (10) | 0.0438 (8) | 0.0788 (12) | −0.0160 (7) | −0.0105 (9) | −0.0162 (8) |
C34 | 0.1236 (18) | 0.0702 (12) | 0.0775 (14) | −0.0304 (12) | −0.0076 (13) | −0.0259 (10) |
C35 | 0.1025 (16) | 0.0748 (13) | 0.1143 (18) | −0.0469 (12) | −0.0037 (13) | −0.0003 (12) |
N1 | 0.0372 (6) | 0.0365 (6) | 0.0442 (7) | −0.0098 (5) | −0.0112 (5) | −0.0007 (5) |
O1 | 0.0547 (6) | 0.0426 (6) | 0.0625 (7) | −0.0012 (5) | −0.0115 (5) | −0.0040 (5) |
O2 | 0.0485 (6) | 0.0433 (5) | 0.0659 (7) | −0.0095 (5) | −0.0121 (5) | −0.0138 (5) |
O3 | 0.0385 (5) | 0.0524 (6) | 0.0362 (5) | −0.0103 (4) | −0.0044 (4) | −0.0017 (4) |
O4 | 0.0424 (6) | 0.0679 (7) | 0.0501 (6) | −0.0175 (5) | 0.0011 (5) | −0.0118 (5) |
O5 | 0.0707 (8) | 0.0547 (7) | 0.0959 (9) | −0.0160 (6) | −0.0504 (7) | 0.0059 (6) |
C25 | 0.0406 (8) | 0.0381 (7) | 0.0432 (8) | −0.0138 (6) | −0.0051 (6) | 0.0002 (6) |
C26 | 0.0478 (8) | 0.0384 (7) | 0.0410 (8) | −0.0131 (6) | −0.0058 (6) | −0.0011 (6) |
C13 | 0.0383 (8) | 0.0504 (8) | 0.0533 (9) | −0.0164 (6) | −0.0131 (6) | −0.0038 (7) |
C12 | 0.0448 (8) | 0.0490 (8) | 0.0505 (9) | −0.0156 (7) | −0.0148 (7) | 0.0013 (7) |
C31 | 0.0519 (9) | 0.0659 (10) | 0.0482 (9) | −0.0143 (8) | −0.0031 (7) | −0.0063 (7) |
C27 | 0.0542 (9) | 0.0510 (8) | 0.0509 (9) | −0.0172 (7) | −0.0117 (7) | −0.0016 (7) |
C14 | 0.0596 (10) | 0.0691 (11) | 0.0584 (10) | −0.0285 (8) | −0.0030 (8) | −0.0091 (8) |
C18 | 0.0555 (9) | 0.0579 (9) | 0.0561 (10) | −0.0241 (8) | −0.0056 (7) | −0.0064 (7) |
C17 | 0.0631 (11) | 0.0602 (10) | 0.0787 (12) | −0.0308 (8) | −0.0044 (9) | 0.0007 (9) |
C30 | 0.0712 (12) | 0.0734 (12) | 0.0476 (10) | −0.0059 (9) | 0.0054 (9) | −0.0097 (8) |
C28 | 0.0780 (13) | 0.0586 (10) | 0.0557 (10) | −0.0214 (9) | −0.0236 (9) | −0.0063 (8) |
C29 | 0.0971 (15) | 0.0557 (10) | 0.0447 (9) | −0.0107 (9) | −0.0136 (10) | −0.0104 (8) |
C16 | 0.0620 (11) | 0.0574 (10) | 0.0978 (15) | −0.0262 (9) | −0.0010 (10) | −0.0222 (10) |
C15 | 0.0672 (11) | 0.0764 (12) | 0.0767 (12) | −0.0284 (10) | 0.0042 (9) | −0.0319 (10) |
C20—C21 | 1.380 (2) | C33—O2 | 1.4609 (17) |
C20—C19 | 1.382 (2) | C33—C35 | 1.490 (3) |
C20—H20 | 0.9300 | C33—C34 | 1.503 (2) |
C21—C22 | 1.373 (2) | C33—H33 | 0.9800 |
C21—H21 | 0.9300 | C34—H34A | 0.9600 |
C22—C23 | 1.371 (2) | C34—H34B | 0.9600 |
C22—H22 | 0.9300 | C34—H34C | 0.9600 |
C23—C24 | 1.385 (2) | C35—H35A | 0.9600 |
C23—H23 | 0.9300 | C35—H35B | 0.9600 |
C24—C19 | 1.3823 (19) | C35—H35C | 0.9600 |
C24—H24 | 0.9300 | N1—C12 | 1.3586 (17) |
C19—C1 | 1.5244 (19) | O3—C25 | 1.3574 (16) |
C1—N1 | 1.4775 (16) | O4—C25 | 1.2042 (16) |
C1—C2 | 1.5225 (19) | O5—C12 | 1.2210 (17) |
C1—H1 | 0.9800 | C25—C26 | 1.4700 (19) |
C2—C3 | 1.4800 (18) | C26—C31 | 1.383 (2) |
C2—H2B | 0.9700 | C26—C27 | 1.387 (2) |
C2—H2A | 0.9700 | C13—C18 | 1.381 (2) |
C3—C4 | 1.3303 (18) | C13—C14 | 1.382 (2) |
C3—O3 | 1.3970 (16) | C13—C12 | 1.498 (2) |
C4—C32 | 1.4901 (19) | C31—C30 | 1.380 (2) |
C4—C5 | 1.5179 (19) | C31—H31 | 0.9300 |
C5—N1 | 1.4761 (16) | C27—C28 | 1.374 (2) |
C5—C6 | 1.5225 (19) | C27—H27 | 0.9300 |
C5—H5 | 0.9800 | C14—C15 | 1.381 (2) |
C6—C7 | 1.379 (2) | C14—H14 | 0.9300 |
C6—C11 | 1.3866 (19) | C18—C17 | 1.380 (2) |
C7—C8 | 1.384 (2) | C18—H18 | 0.9300 |
C7—H7 | 0.9300 | C17—C16 | 1.369 (3) |
C8—C9 | 1.375 (2) | C17—H17 | 0.9300 |
C8—H8 | 0.9300 | C30—C29 | 1.377 (3) |
C9—C10 | 1.364 (2) | C30—H30 | 0.9300 |
C9—H9 | 0.9300 | C28—C29 | 1.372 (3) |
C10—C11 | 1.385 (2) | C28—H28 | 0.9300 |
C10—H10 | 0.9300 | C29—H29 | 0.9300 |
C11—H11 | 0.9300 | C16—C15 | 1.362 (3) |
C32—O1 | 1.2013 (16) | C16—H16 | 0.9300 |
C32—O2 | 1.3326 (17) | C15—H15 | 0.9300 |
C21—C20—C19 | 121.03 (15) | O2—C33—C34 | 106.04 (13) |
C21—C20—H20 | 119.5 | C35—C33—C34 | 113.85 (17) |
C19—C20—H20 | 119.5 | O2—C33—H33 | 109.5 |
C22—C21—C20 | 120.23 (16) | C35—C33—H33 | 109.5 |
C22—C21—H21 | 119.9 | C34—C33—H33 | 109.5 |
C20—C21—H21 | 119.9 | C33—C34—H34A | 109.5 |
C23—C22—C21 | 119.41 (16) | C33—C34—H34B | 109.5 |
C23—C22—H22 | 120.3 | H34A—C34—H34B | 109.5 |
C21—C22—H22 | 120.3 | C33—C34—H34C | 109.5 |
C22—C23—C24 | 120.53 (16) | H34A—C34—H34C | 109.5 |
C22—C23—H23 | 119.7 | H34B—C34—H34C | 109.5 |
C24—C23—H23 | 119.7 | C33—C35—H35A | 109.5 |
C19—C24—C23 | 120.50 (14) | C33—C35—H35B | 109.5 |
C19—C24—H24 | 119.8 | H35A—C35—H35B | 109.5 |
C23—C24—H24 | 119.8 | C33—C35—H35C | 109.5 |
C20—C19—C24 | 118.30 (13) | H35A—C35—H35C | 109.5 |
C20—C19—C1 | 118.08 (12) | H35B—C35—H35C | 109.5 |
C24—C19—C1 | 123.50 (13) | C12—N1—C5 | 118.36 (10) |
N1—C1—C2 | 107.94 (10) | C12—N1—C1 | 123.35 (11) |
N1—C1—C19 | 112.29 (10) | C5—N1—C1 | 118.21 (10) |
C2—C1—C19 | 116.08 (11) | C32—O2—C33 | 118.20 (11) |
N1—C1—H1 | 106.7 | C25—O3—C3 | 118.50 (10) |
C2—C1—H1 | 106.7 | O4—C25—O3 | 122.40 (13) |
C19—C1—H1 | 106.7 | O4—C25—C26 | 125.44 (13) |
C3—C2—C1 | 111.93 (10) | O3—C25—C26 | 112.16 (12) |
C3—C2—H2B | 109.2 | C31—C26—C27 | 119.87 (14) |
C1—C2—H2B | 109.2 | C31—C26—C25 | 122.37 (13) |
C3—C2—H2A | 109.2 | C27—C26—C25 | 117.75 (13) |
C1—C2—H2A | 109.2 | C18—C13—C14 | 118.73 (14) |
H2B—C2—H2A | 107.9 | C18—C13—C12 | 120.89 (14) |
C4—C3—O3 | 119.97 (12) | C14—C13—C12 | 120.19 (14) |
C4—C3—C2 | 124.51 (12) | O5—C12—N1 | 122.03 (13) |
O3—C3—C2 | 115.02 (10) | O5—C12—C13 | 119.46 (12) |
C3—C4—C32 | 123.90 (12) | N1—C12—C13 | 118.48 (12) |
C3—C4—C5 | 121.79 (12) | C30—C31—C26 | 119.66 (16) |
C32—C4—C5 | 113.95 (11) | C30—C31—H31 | 120.2 |
N1—C5—C4 | 110.68 (10) | C26—C31—H31 | 120.2 |
N1—C5—C6 | 114.62 (11) | C28—C27—C26 | 119.90 (16) |
C4—C5—C6 | 113.74 (11) | C28—C27—H27 | 120.1 |
N1—C5—H5 | 105.6 | C26—C27—H27 | 120.1 |
C4—C5—H5 | 105.6 | C15—C14—C13 | 120.17 (16) |
C6—C5—H5 | 105.6 | C15—C14—H14 | 119.9 |
C7—C6—C11 | 118.44 (13) | C13—C14—H14 | 119.9 |
C7—C6—C5 | 122.49 (12) | C17—C18—C13 | 120.56 (16) |
C11—C6—C5 | 119.02 (12) | C17—C18—H18 | 119.7 |
C6—C7—C8 | 120.72 (14) | C13—C18—H18 | 119.7 |
C6—C7—H7 | 119.6 | C16—C17—C18 | 119.94 (17) |
C8—C7—H7 | 119.6 | C16—C17—H17 | 120.0 |
C9—C8—C7 | 120.01 (16) | C18—C17—H17 | 120.0 |
C9—C8—H8 | 120.0 | C29—C30—C31 | 120.16 (17) |
C7—C8—H8 | 120.0 | C29—C30—H30 | 119.9 |
C10—C9—C8 | 120.09 (15) | C31—C30—H30 | 119.9 |
C10—C9—H9 | 120.0 | C29—C28—C27 | 120.19 (16) |
C8—C9—H9 | 120.0 | C29—C28—H28 | 119.9 |
C9—C10—C11 | 120.01 (15) | C27—C28—H28 | 119.9 |
C9—C10—H10 | 120.0 | C28—C29—C30 | 120.21 (16) |
C11—C10—H10 | 120.0 | C28—C29—H29 | 119.9 |
C10—C11—C6 | 120.73 (15) | C30—C29—H29 | 119.9 |
C10—C11—H11 | 119.6 | C15—C16—C17 | 120.10 (16) |
C6—C11—H11 | 119.6 | C15—C16—H16 | 120.0 |
O1—C32—O2 | 124.75 (13) | C17—C16—H16 | 120.0 |
O1—C32—C4 | 122.82 (13) | C16—C15—C14 | 120.44 (17) |
O2—C32—C4 | 112.39 (11) | C16—C15—H15 | 119.8 |
O2—C33—C35 | 108.43 (15) | C14—C15—H15 | 119.8 |
C19—C20—C21—C22 | −0.3 (2) | C4—C5—N1—C1 | −36.21 (15) |
C20—C21—C22—C23 | −0.1 (3) | C6—C5—N1—C1 | 94.06 (13) |
C21—C22—C23—C24 | 0.6 (3) | C2—C1—N1—C12 | −117.56 (14) |
C22—C23—C24—C19 | −0.8 (2) | C19—C1—N1—C12 | 113.23 (14) |
C21—C20—C19—C24 | 0.1 (2) | C2—C1—N1—C5 | 59.05 (14) |
C21—C20—C19—C1 | −175.99 (13) | C19—C1—N1—C5 | −70.17 (14) |
C23—C24—C19—C20 | 0.5 (2) | O1—C32—O2—C33 | 2.6 (2) |
C23—C24—C19—C1 | 176.31 (14) | C4—C32—O2—C33 | −179.61 (12) |
C20—C19—C1—N1 | −66.15 (15) | C35—C33—O2—C32 | −91.49 (17) |
C24—C19—C1—N1 | 118.01 (14) | C34—C33—O2—C32 | 145.87 (15) |
C20—C19—C1—C2 | 169.00 (12) | C4—C3—O3—C25 | −108.81 (14) |
C24—C19—C1—C2 | −6.84 (18) | C2—C3—O3—C25 | 78.95 (14) |
N1—C1—C2—C3 | −45.79 (14) | C3—O3—C25—O4 | −3.28 (18) |
C19—C1—C2—C3 | 81.25 (14) | C3—O3—C25—C26 | 176.06 (10) |
C1—C2—C3—C4 | 16.21 (18) | O4—C25—C26—C31 | −173.77 (14) |
C1—C2—C3—O3 | −171.96 (10) | O3—C25—C26—C31 | 6.91 (18) |
O3—C3—C4—C32 | 8.7 (2) | O4—C25—C26—C27 | 7.4 (2) |
C2—C3—C4—C32 | −179.86 (12) | O3—C25—C26—C27 | −171.88 (11) |
O3—C3—C4—C5 | −163.98 (11) | C5—N1—C12—O5 | 7.5 (2) |
C2—C3—C4—C5 | 7.5 (2) | C1—N1—C12—O5 | −175.88 (14) |
C3—C4—C5—N1 | 1.40 (17) | C5—N1—C12—C13 | −170.63 (12) |
C32—C4—C5—N1 | −171.94 (10) | C1—N1—C12—C13 | 6.0 (2) |
C3—C4—C5—C6 | −129.34 (13) | C18—C13—C12—O5 | −106.54 (18) |
C32—C4—C5—C6 | 57.32 (15) | C14—C13—C12—O5 | 68.5 (2) |
N1—C5—C6—C7 | −98.31 (15) | C18—C13—C12—N1 | 71.66 (19) |
C4—C5—C6—C7 | 30.45 (18) | C14—C13—C12—N1 | −113.33 (16) |
N1—C5—C6—C11 | 84.44 (15) | C27—C26—C31—C30 | −1.0 (2) |
C4—C5—C6—C11 | −146.80 (13) | C25—C26—C31—C30 | −179.75 (14) |
C11—C6—C7—C8 | −1.0 (2) | C31—C26—C27—C28 | 0.2 (2) |
C5—C6—C7—C8 | −178.23 (14) | C25—C26—C27—C28 | 179.03 (13) |
C6—C7—C8—C9 | 0.5 (2) | C18—C13—C14—C15 | −2.1 (2) |
C7—C8—C9—C10 | 0.2 (3) | C12—C13—C14—C15 | −177.24 (14) |
C8—C9—C10—C11 | −0.3 (2) | C14—C13—C18—C17 | 0.9 (2) |
C9—C10—C11—C6 | −0.2 (2) | C12—C13—C18—C17 | 175.96 (14) |
C7—C6—C11—C10 | 0.8 (2) | C13—C18—C17—C16 | 1.1 (3) |
C5—C6—C11—C10 | 178.19 (13) | C26—C31—C30—C29 | 1.2 (3) |
C3—C4—C32—O1 | −146.00 (15) | C26—C27—C28—C29 | 0.4 (2) |
C5—C4—C32—O1 | 27.18 (18) | C27—C28—C29—C30 | −0.1 (3) |
C3—C4—C32—O2 | 36.14 (18) | C31—C30—C29—C28 | −0.7 (3) |
C5—C4—C32—O2 | −150.68 (12) | C18—C17—C16—C15 | −1.8 (3) |
C4—C5—N1—C12 | 140.57 (12) | C17—C16—C15—C14 | 0.5 (3) |
C6—C5—N1—C12 | −89.16 (14) | C13—C14—C15—C16 | 1.4 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10···O5i | 0.93 | 2.57 | 3.500 (2) | 173 |
C11—H11···O5 | 0.93 | 2.53 | 3.171 (2) | 126 |
C24—H24···O4 | 0.93 | 2.36 | 3.2898 (19) | 179 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10···O5i | 0.93 | 2.57 | 3.500 (2) | 173.2 |
C11—H11···O5 | 0.93 | 2.53 | 3.171 (2) | 126 |
C24—H24···O4 | 0.93 | 2.36 | 3.2898 (19) | 179 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Acknowledgements
The authors thank Dr Babu Varghese, SAIF, IIT, Chennai, India for the data collection.
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Piperidine iminocyclitols have shown significant pharmacological results against HIV and in cancer therapy. Alkaloids containing the piperidine nucleus exhibited a promising wide range of biological activities such as antimicrobial, antiparasitic, cytotoxicity, anti-inflammatory, pesticidal and anti-HIV-1 properties (Mishra and Ghosh, 2011). The motivation for the biological trial arises as piperidine derivatives are an important class of heterocyclic compounds with potent pharmacological/biological activities (Ramachandran et al., 2011). Against this background, and in order to obtain detailed information on molecular conformations in the solid state, an X-ray study of the title compound was carried out.
X-Ray analysis confirms the molecular structure and atom connectivity as illustrated in Fig. 1. The bond lengths N1—C1=1.477 (2), O5—C12=1.221 (2) are normal and comparable with the corresponding values observed in the related structure of Ethyl 3-methyl-2,6-diphenylpiperidine-1-carboxylate (Natarajan & Mathews, 2011). The sum of the bond angle around atom N1 (359.9°) of the piperidine ring indicates sp2 hybridization. Both phenyl rings are axial substituents on the piperidine ring and the angle between least-squares mean planes fitted through both rings is 45.28 (8)°.
The acetate group is almost extended conformation which can be seen from the torsion angle [C4—C32—O2—C33 = -179.6 (2)°] The piperidine ring adopts a distorted envelope conformation. In the crystal, molecules are linked into cyclic centrosymmetric dimers via C10–H10···O5 hydrogen bonds with the ring motif R22(16), which propagates along the b axis, as shown in Fig. 2. An intramolecular C11—H11···O5 hydrogen bond form an S(7) [H11,C11,C6,C5,N1,C12 and O5] ring motif (Bernstein et al., 1995).