organic compounds
Ethyl 2,6-bis(4-chlorophenyl)-4-(4-methylanilino)-1-(4-methylphenyl)-1,2,5,6-tetrahydropyridine-3-carboxylate
aPost-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India, and bLaboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati University, Santiniketan 731 235, West Bengal, India
*Correspondence e-mail: vivek_gupta2k2@hotmail.com
In the title molecule, C34H32Cl2N2O2, the tetrahydropyridine ring adopts a distorted boat conformation and both 4-chlorophenyl substituents are in axial positions. An intramolecular N—H⋯O hydrogen bond is formed by the amino group and carbonyl O atom. In the crystal, weak C—H⋯Cl interactions link the molecules into chains along [010].
Related literature
For general background to functionalized piperidines, see: Pinder (1992); Watson et al. (2000); Breman et al. (2001); Kamei et al. (2005). For related structures, see: Sambyal et al. (2011); Brahmachari & Das (2012); Khan et al. (2010); Anthal et al. (2013). For ring conformations, see: Duax & Norton (1975).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Oxford Diffraction, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; 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); software used to prepare material for publication: PLATON (Spek, 2009).
Supporting information
10.1107/S1600536813005126/gk2555sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813005126/gk2555Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813005126/gk2555Isup3.cml
An oven-dried screw cap reaction tube was charged with a magnetic stir bar, 4-methylaniline (2 mmol), ethyl acetoacetate (1 mmol) and Bi(NO3)3.5H2O (10 mol%) in 4 ml ethanol; the mixture was stirred at room temperature for 20 min, and after then 4-chlorobenzaldehyde (2 mmol) was added to the reaction mixture and stirring was continued up to 21 h to complete the reaction (monitored by TLC). On completion of the reaction, a thick white precipitate was obtained. The solid residue was filtered off and washed with cold ethanol-water. The solid mass was dissolved in hot ethyl acetate-ethanol mixture and filtered off when bismuth salt separated out; the filtrate on standing afforded white crystals of the title compound, characterized by elemental analyses and spectral studies including FT—IR, 1H-NMR, and 13C-NMR. For X-ray study single crystals were prepared by further recrystallization by slow evaporation from ethanol-ethyl acetate-water solution (colourless crystals; mp 500–502 K; anal. calcd for C34H32Cl2N2O2: C 71.45, H 5.64, N 4.90; found: C 71.42, H 5.66, N 4.91).
All H atoms were positioned geometrically and were treated as riding on their parent C/N atoms, with C—H distances of 0.93–0.98 Å and N—H distance of 0.86 Å; Uiso(H) = 1.2Ueq(C/N), except for the methyl groups where Uiso(H) = 1.5Ueq(C).
Data collection: CrysAlis PRO (Oxford Diffraction, 2010); cell
CrysAlis PRO (Oxford Diffraction, 2010); data reduction: CrysAlis PRO (Oxford Diffraction, 2010); 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); software used to prepare material for publication: PLATON (Spek, 2009).C34H32Cl2N2O2 | Z = 2 |
Mr = 571.52 | F(000) = 600 |
Triclinic, P1 | Dx = 1.247 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 10.0851 (6) Å | Cell parameters from 3234 reflections |
b = 12.4340 (8) Å | θ = 3.3–28.9° |
c = 14.2414 (10) Å | µ = 0.25 mm−1 |
α = 113.405 (6)° | T = 293 K |
β = 102.233 (5)° | Block-shaped, white |
γ = 101.194 (5)° | 0.30 × 0.20 × 0.20 mm |
V = 1522.63 (17) Å3 |
Oxford Diffraction Xcalibur Sapphire3 diffractometer | 5342 independent reflections |
Radiation source: fine-focus sealed tube | 2181 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.059 |
Detector resolution: 16.1049 pixels mm-1 | θmax = 25.0°, θmin = 3.3° |
ω scans | h = −11→11 |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010) | k = −14→14 |
Tmin = 0.853, Tmax = 1.000 | l = −16→16 |
13336 measured reflections |
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)] = 0.053 | H-atom parameters constrained |
wR(F2) = 0.109 | w = 1/[σ2(Fo2) + (0.0203P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.89 | (Δ/σ)max = 0.001 |
5342 reflections | Δρmax = 0.25 e Å−3 |
365 parameters | Δρmin = −0.21 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0060 (5) |
C34H32Cl2N2O2 | γ = 101.194 (5)° |
Mr = 571.52 | V = 1522.63 (17) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.0851 (6) Å | Mo Kα radiation |
b = 12.4340 (8) Å | µ = 0.25 mm−1 |
c = 14.2414 (10) Å | T = 293 K |
α = 113.405 (6)° | 0.30 × 0.20 × 0.20 mm |
β = 102.233 (5)° |
Oxford Diffraction Xcalibur Sapphire3 diffractometer | 5342 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010) | 2181 reflections with I > 2σ(I) |
Tmin = 0.853, Tmax = 1.000 | Rint = 0.059 |
13336 measured reflections |
R[F2 > 2σ(F2)] = 0.053 | 0 restraints |
wR(F2) = 0.109 | H-atom parameters constrained |
S = 0.89 | Δρmax = 0.25 e Å−3 |
5342 reflections | Δρmin = −0.21 e Å−3 |
365 parameters |
Experimental. 1H-NMR (400 MHz, CDCl3): δH 1.46 (t, J = 6.8 Hz, 3H), 2.16 (s, 3H), 2.27 (s, 3H), 2.70 (dd, J = 2.4, 15.2 Hz, 1H), 2.77 (dd, J = 5.2, 15.2 Hz, 1H), 4.29–4.33 (m, 1H), 4.35–4.44 (m, 1H), 5.05 (br s, 1H), 6.29 (t, J = 8, 11.2 Hz, 3H), 6.36 (d, J = 8.8 Hz, 2H), 6.88 (d, J = 8.4 Hz, 2H), 6.94 (d, J = 8 Hz, 2H), 7.05(d, J = 8.4 Hz, 2H), 7.21–7.26 (m, 6H), 10.20 (br s, 1H). 13C-NMR (100 MHz, CDCl3): δC 14.82, 20.13, 20.92, 33.62, 54.84, 57.35, 59.74, 97.24, 113.0, 125.77, 125.83, 127.85, 128.07, 128.35, 128.73, 129.59, 132.01, 132.76, 135.01, 135.88, 141.23, 142.80, 144.37, 156.16, 168.03. IR νmax (KBr): 3242, 3024, 2974, 2915, 2870, 1653, 1589, 1514, 1483, 1256, 1172, 1076, 1012, 804, 678 cm-1. CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.40 (release 27–08-2010 CrysAlis171. NET) (compiled Aug 27 2010,11:50:40) Empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm. |
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 | 0.22422 (13) | 1.01537 (10) | 0.47443 (10) | 0.1168 (5) | |
Cl2 | 0.36062 (12) | −0.11737 (10) | 0.09237 (10) | 0.1157 (5) | |
O1 | 0.0417 (3) | 0.3327 (2) | −0.03361 (19) | 0.0828 (8) | |
O2 | 0.2464 (2) | 0.4814 (2) | 0.01502 (18) | 0.0734 (7) | |
N1 | 0.4134 (2) | 0.4914 (2) | 0.29596 (19) | 0.0496 (7) | |
N2 | −0.0058 (3) | 0.2735 (2) | 0.1225 (2) | 0.0689 (9) | |
H2 | −0.0501 | 0.2706 | 0.0625 | 0.083* | |
C2 | 0.3304 (3) | 0.5348 (3) | 0.2295 (2) | 0.0493 (8) | |
H2A | 0.3889 | 0.5539 | 0.1880 | 0.059* | |
C3 | 0.1954 (3) | 0.4340 (3) | 0.1478 (3) | 0.0488 (8) | |
C4 | 0.1191 (3) | 0.3651 (3) | 0.1837 (3) | 0.0532 (9) | |
C5 | 0.1815 (3) | 0.3929 (3) | 0.2988 (2) | 0.0564 (9) | |
H5A | 0.1303 | 0.3288 | 0.3122 | 0.068* | |
H5B | 0.1728 | 0.4708 | 0.3463 | 0.068* | |
C6 | 0.3382 (3) | 0.3997 (3) | 0.3215 (3) | 0.0510 (9) | |
H6 | 0.3792 | 0.4284 | 0.3993 | 0.061* | |
C7 | 0.1516 (4) | 0.4089 (3) | 0.0359 (3) | 0.0586 (10) | |
C8 | 0.2095 (4) | 0.4698 (4) | −0.0935 (3) | 0.0985 (14) | |
H8A | 0.2042 | 0.3881 | −0.1448 | 0.118* | |
H8B | 0.1170 | 0.4815 | −0.1128 | 0.118* | |
C9 | 0.3167 (5) | 0.5614 (3) | −0.0972 (3) | 0.1185 (16) | |
H9A | 0.3235 | 0.6418 | −0.0446 | 0.178* | |
H9B | 0.2912 | 0.5567 | −0.1679 | 0.178* | |
H9C | 0.4070 | 0.5469 | −0.0815 | 0.178* | |
C10 | 0.3019 (3) | 0.6540 (3) | 0.2953 (3) | 0.0507 (9) | |
C11 | 0.2103 (3) | 0.6973 (3) | 0.2428 (3) | 0.0648 (10) | |
H11 | 0.1642 | 0.6512 | 0.1688 | 0.078* | |
C12 | 0.1861 (4) | 0.8064 (4) | 0.2976 (3) | 0.0746 (11) | |
H12 | 0.1236 | 0.8330 | 0.2605 | 0.090* | |
C13 | 0.2527 (4) | 0.8763 (3) | 0.4059 (3) | 0.0688 (11) | |
C14 | 0.3449 (4) | 0.8373 (3) | 0.4613 (3) | 0.0729 (11) | |
H14 | 0.3911 | 0.8849 | 0.5352 | 0.087* | |
C15 | 0.3683 (3) | 0.7264 (3) | 0.4058 (3) | 0.0608 (10) | |
H15 | 0.4300 | 0.6998 | 0.4435 | 0.073* | |
C16 | 0.5610 (3) | 0.5394 (3) | 0.3382 (2) | 0.0447 (8) | |
C17 | 0.6367 (3) | 0.6453 (3) | 0.3357 (2) | 0.0524 (9) | |
H17 | 0.5870 | 0.6842 | 0.3038 | 0.063* | |
C18 | 0.7817 (3) | 0.6921 (3) | 0.3795 (3) | 0.0573 (9) | |
H18 | 0.8281 | 0.7620 | 0.3758 | 0.069* | |
C19 | 0.8621 (3) | 0.6397 (3) | 0.4289 (3) | 0.0580 (9) | |
C20 | 0.7892 (3) | 0.5358 (3) | 0.4315 (3) | 0.0606 (10) | |
H20 | 0.8403 | 0.4981 | 0.4641 | 0.073* | |
C21 | 0.6432 (3) | 0.4858 (3) | 0.3877 (2) | 0.0528 (9) | |
H21 | 0.5981 | 0.4152 | 0.3909 | 0.063* | |
C22 | 0.3522 (3) | 0.2723 (3) | 0.2641 (3) | 0.0495 (9) | |
C23 | 0.3729 (3) | 0.2285 (3) | 0.1648 (3) | 0.0624 (10) | |
H23 | 0.3852 | 0.2806 | 0.1331 | 0.075* | |
C24 | 0.3758 (3) | 0.1092 (3) | 0.1110 (3) | 0.0707 (11) | |
H24 | 0.3888 | 0.0809 | 0.0437 | 0.085* | |
C25 | 0.3591 (4) | 0.0333 (3) | 0.1587 (4) | 0.0746 (12) | |
C26 | 0.3418 (3) | 0.0744 (4) | 0.2592 (3) | 0.0734 (12) | |
H26 | 0.3337 | 0.0229 | 0.2918 | 0.088* | |
C27 | 0.3366 (3) | 0.1935 (3) | 0.3110 (3) | 0.0645 (10) | |
H27 | 0.3225 | 0.2211 | 0.3780 | 0.077* | |
C28 | −0.0709 (3) | 0.1806 (3) | 0.1490 (3) | 0.0627 (10) | |
C29 | −0.1797 (4) | 0.1888 (3) | 0.1914 (3) | 0.0768 (12) | |
H29 | −0.2129 | 0.2565 | 0.2048 | 0.092* | |
C30 | −0.2411 (4) | 0.0965 (4) | 0.2146 (3) | 0.0907 (14) | |
H30 | −0.3161 | 0.1024 | 0.2427 | 0.109* | |
C31 | −0.1929 (5) | −0.0037 (4) | 0.1966 (4) | 0.0874 (14) | |
C32 | −0.0836 (4) | −0.0106 (4) | 0.1543 (3) | 0.0900 (14) | |
H32 | −0.0503 | −0.0782 | 0.1407 | 0.108* | |
C33 | −0.0212 (4) | 0.0819 (4) | 0.1314 (3) | 0.0789 (12) | |
H33 | 0.0545 | 0.0767 | 0.1040 | 0.095* | |
C34 | 1.0228 (3) | 0.6960 (3) | 0.4809 (3) | 0.0972 (14) | |
H34A | 1.0533 | 0.6767 | 0.5393 | 0.146* | |
H34B | 1.0482 | 0.7839 | 0.5082 | 0.146* | |
H34C | 1.0686 | 0.6630 | 0.4282 | 0.146* | |
C35 | −0.2600 (4) | −0.1064 (4) | 0.2214 (4) | 0.145 (2) | |
H35A | −0.3102 | −0.1804 | 0.1551 | 0.217* | |
H35B | −0.3255 | −0.0821 | 0.2596 | 0.217* | |
H35C | −0.1865 | −0.1212 | 0.2653 | 0.217* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1645 (12) | 0.0713 (8) | 0.1186 (11) | 0.0572 (8) | 0.0661 (9) | 0.0273 (8) |
Cl2 | 0.1328 (10) | 0.0596 (8) | 0.1190 (11) | 0.0344 (7) | 0.0103 (8) | 0.0197 (7) |
O1 | 0.0872 (19) | 0.0779 (19) | 0.0520 (17) | −0.0019 (15) | −0.0075 (14) | 0.0274 (16) |
O2 | 0.0933 (18) | 0.0777 (18) | 0.0403 (15) | 0.0102 (14) | 0.0167 (13) | 0.0285 (14) |
N1 | 0.0462 (16) | 0.0515 (18) | 0.0501 (18) | 0.0096 (13) | 0.0088 (13) | 0.0281 (16) |
N2 | 0.0542 (18) | 0.072 (2) | 0.065 (2) | 0.0005 (16) | −0.0024 (15) | 0.0360 (19) |
C2 | 0.052 (2) | 0.052 (2) | 0.039 (2) | 0.0114 (17) | 0.0099 (16) | 0.0212 (19) |
C3 | 0.055 (2) | 0.047 (2) | 0.039 (2) | 0.0123 (17) | 0.0119 (17) | 0.0171 (18) |
C4 | 0.046 (2) | 0.056 (2) | 0.049 (2) | 0.0140 (18) | 0.0053 (18) | 0.021 (2) |
C5 | 0.055 (2) | 0.058 (2) | 0.050 (2) | 0.0096 (17) | 0.0156 (18) | 0.022 (2) |
C6 | 0.054 (2) | 0.053 (2) | 0.039 (2) | 0.0085 (17) | 0.0109 (16) | 0.0204 (19) |
C7 | 0.072 (3) | 0.052 (2) | 0.046 (2) | 0.016 (2) | 0.013 (2) | 0.020 (2) |
C8 | 0.129 (4) | 0.103 (4) | 0.050 (3) | 0.007 (3) | 0.026 (2) | 0.037 (3) |
C9 | 0.209 (5) | 0.080 (3) | 0.077 (3) | 0.037 (3) | 0.069 (3) | 0.038 (3) |
C10 | 0.055 (2) | 0.047 (2) | 0.047 (2) | 0.0133 (17) | 0.0141 (17) | 0.022 (2) |
C11 | 0.078 (3) | 0.052 (2) | 0.052 (3) | 0.0124 (19) | 0.0099 (19) | 0.021 (2) |
C12 | 0.093 (3) | 0.059 (3) | 0.076 (3) | 0.029 (2) | 0.025 (3) | 0.034 (3) |
C13 | 0.080 (3) | 0.049 (3) | 0.072 (3) | 0.020 (2) | 0.030 (2) | 0.019 (2) |
C14 | 0.069 (3) | 0.074 (3) | 0.053 (3) | 0.018 (2) | 0.020 (2) | 0.009 (2) |
C15 | 0.057 (2) | 0.071 (3) | 0.046 (2) | 0.0229 (19) | 0.0156 (18) | 0.017 (2) |
C16 | 0.052 (2) | 0.047 (2) | 0.034 (2) | 0.0149 (17) | 0.0142 (16) | 0.0169 (18) |
C17 | 0.057 (2) | 0.047 (2) | 0.053 (2) | 0.0179 (17) | 0.0193 (18) | 0.0213 (19) |
C18 | 0.057 (2) | 0.052 (2) | 0.069 (3) | 0.0158 (18) | 0.0256 (19) | 0.030 (2) |
C19 | 0.046 (2) | 0.062 (3) | 0.062 (3) | 0.0144 (18) | 0.0170 (18) | 0.025 (2) |
C20 | 0.059 (2) | 0.069 (3) | 0.056 (2) | 0.0197 (19) | 0.0160 (19) | 0.031 (2) |
C21 | 0.059 (2) | 0.050 (2) | 0.049 (2) | 0.0118 (17) | 0.0175 (17) | 0.0234 (19) |
C22 | 0.052 (2) | 0.047 (2) | 0.047 (2) | 0.0128 (16) | 0.0126 (17) | 0.022 (2) |
C23 | 0.073 (2) | 0.059 (3) | 0.054 (3) | 0.022 (2) | 0.0195 (19) | 0.024 (2) |
C24 | 0.085 (3) | 0.067 (3) | 0.054 (3) | 0.031 (2) | 0.022 (2) | 0.019 (2) |
C25 | 0.080 (3) | 0.047 (3) | 0.076 (3) | 0.017 (2) | 0.003 (2) | 0.021 (3) |
C26 | 0.077 (3) | 0.058 (3) | 0.076 (3) | 0.008 (2) | 0.003 (2) | 0.038 (3) |
C27 | 0.071 (2) | 0.060 (3) | 0.060 (3) | 0.011 (2) | 0.0174 (19) | 0.032 (2) |
C28 | 0.050 (2) | 0.065 (3) | 0.061 (3) | 0.005 (2) | 0.0048 (19) | 0.030 (2) |
C29 | 0.072 (3) | 0.076 (3) | 0.088 (3) | 0.023 (2) | 0.028 (2) | 0.041 (3) |
C30 | 0.079 (3) | 0.109 (4) | 0.095 (4) | 0.020 (3) | 0.034 (2) | 0.057 (3) |
C31 | 0.075 (3) | 0.094 (4) | 0.086 (4) | 0.003 (3) | 0.006 (3) | 0.055 (3) |
C32 | 0.092 (3) | 0.068 (3) | 0.099 (4) | 0.018 (3) | 0.010 (3) | 0.042 (3) |
C33 | 0.065 (3) | 0.082 (3) | 0.088 (3) | 0.020 (2) | 0.021 (2) | 0.040 (3) |
C34 | 0.058 (3) | 0.107 (4) | 0.132 (4) | 0.021 (2) | 0.023 (2) | 0.066 (3) |
C35 | 0.143 (4) | 0.142 (5) | 0.169 (5) | 0.002 (3) | 0.030 (4) | 0.118 (4) |
Cl1—C13 | 1.731 (4) | C16—C21 | 1.403 (3) |
Cl2—C25 | 1.737 (4) | C16—C17 | 1.405 (3) |
O1—C7 | 1.220 (3) | C17—C18 | 1.364 (3) |
O2—C7 | 1.347 (3) | C17—H17 | 0.9300 |
O2—C8 | 1.452 (3) | C18—C19 | 1.381 (4) |
N1—C16 | 1.388 (3) | C18—H18 | 0.9300 |
N1—C6 | 1.455 (3) | C19—C20 | 1.376 (4) |
N1—C2 | 1.460 (3) | C19—C34 | 1.518 (4) |
N2—C4 | 1.354 (3) | C20—C21 | 1.375 (4) |
N2—C28 | 1.437 (4) | C20—H20 | 0.9300 |
N2—H2 | 0.8600 | C21—H21 | 0.9300 |
C2—C3 | 1.512 (4) | C22—C23 | 1.378 (4) |
C2—C10 | 1.528 (4) | C22—C27 | 1.391 (4) |
C2—H2A | 0.9800 | C23—C24 | 1.383 (4) |
C3—C4 | 1.359 (4) | C23—H23 | 0.9300 |
C3—C7 | 1.443 (4) | C24—C25 | 1.369 (4) |
C4—C5 | 1.494 (4) | C24—H24 | 0.9300 |
C5—C6 | 1.522 (3) | C25—C26 | 1.378 (5) |
C5—H5A | 0.9700 | C26—C27 | 1.384 (4) |
C5—H5B | 0.9700 | C26—H26 | 0.9300 |
C6—C22 | 1.519 (4) | C27—H27 | 0.9300 |
C6—H6 | 0.9800 | C28—C29 | 1.362 (4) |
C8—C9 | 1.436 (4) | C28—C33 | 1.367 (4) |
C8—H8A | 0.9700 | C29—C30 | 1.387 (4) |
C8—H8B | 0.9700 | C29—H29 | 0.9300 |
C9—H9A | 0.9600 | C30—C31 | 1.374 (5) |
C9—H9B | 0.9600 | C30—H30 | 0.9300 |
C9—H9C | 0.9600 | C31—C32 | 1.365 (5) |
C10—C11 | 1.386 (4) | C31—C35 | 1.529 (4) |
C10—C15 | 1.389 (4) | C32—C33 | 1.389 (4) |
C11—C12 | 1.370 (4) | C32—H32 | 0.9300 |
C11—H11 | 0.9300 | C33—H33 | 0.9300 |
C12—C13 | 1.361 (4) | C34—H34A | 0.9600 |
C12—H12 | 0.9300 | C34—H34B | 0.9600 |
C13—C14 | 1.374 (4) | C34—H34C | 0.9600 |
C14—C15 | 1.386 (4) | C35—H35A | 0.9600 |
C14—H14 | 0.9300 | C35—H35B | 0.9600 |
C15—H15 | 0.9300 | C35—H35C | 0.9600 |
C7—O2—C8 | 117.1 (3) | N1—C16—C17 | 122.3 (3) |
C16—N1—C6 | 119.9 (2) | C21—C16—C17 | 116.1 (3) |
C16—N1—C2 | 121.2 (2) | C18—C17—C16 | 121.2 (3) |
C6—N1—C2 | 118.8 (2) | C18—C17—H17 | 119.4 |
C4—N2—C28 | 125.8 (3) | C16—C17—H17 | 119.4 |
C4—N2—H2 | 117.1 | C17—C18—C19 | 122.5 (3) |
C28—N2—H2 | 117.1 | C17—C18—H18 | 118.8 |
N1—C2—C3 | 111.4 (2) | C19—C18—H18 | 118.8 |
N1—C2—C10 | 113.5 (2) | C20—C19—C18 | 116.8 (3) |
C3—C2—C10 | 112.5 (2) | C20—C19—C34 | 121.4 (3) |
N1—C2—H2A | 106.3 | C18—C19—C34 | 121.7 (3) |
C3—C2—H2A | 106.3 | C21—C20—C19 | 122.2 (3) |
C10—C2—H2A | 106.3 | C21—C20—H20 | 118.9 |
C4—C3—C7 | 121.3 (3) | C19—C20—H20 | 118.9 |
C4—C3—C2 | 116.8 (3) | C20—C21—C16 | 121.2 (3) |
C7—C3—C2 | 121.9 (3) | C20—C21—H21 | 119.4 |
N2—C4—C3 | 124.8 (3) | C16—C21—H21 | 119.4 |
N2—C4—C5 | 118.9 (3) | C23—C22—C27 | 118.2 (3) |
C3—C4—C5 | 116.4 (3) | C23—C22—C6 | 123.0 (3) |
C4—C5—C6 | 109.2 (3) | C27—C22—C6 | 118.8 (3) |
C4—C5—H5A | 109.8 | C22—C23—C24 | 121.7 (3) |
C6—C5—H5A | 109.8 | C22—C23—H23 | 119.1 |
C4—C5—H5B | 109.8 | C24—C23—H23 | 119.1 |
C6—C5—H5B | 109.8 | C25—C24—C23 | 118.9 (4) |
H5A—C5—H5B | 108.3 | C25—C24—H24 | 120.6 |
N1—C6—C22 | 114.5 (3) | C23—C24—H24 | 120.6 |
N1—C6—C5 | 109.8 (2) | C24—C25—C26 | 121.2 (4) |
C22—C6—C5 | 110.3 (2) | C24—C25—Cl2 | 119.8 (4) |
N1—C6—H6 | 107.3 | C26—C25—Cl2 | 119.0 (3) |
C22—C6—H6 | 107.3 | C25—C26—C27 | 119.1 (3) |
C5—C6—H6 | 107.3 | C25—C26—H26 | 120.4 |
O1—C7—O2 | 122.2 (3) | C27—C26—H26 | 120.4 |
O1—C7—C3 | 125.6 (3) | C26—C27—C22 | 120.8 (4) |
O2—C7—C3 | 112.2 (3) | C26—C27—H27 | 119.6 |
C9—C8—O2 | 108.8 (3) | C22—C27—H27 | 119.6 |
C9—C8—H8A | 109.9 | C29—C28—C33 | 119.5 (3) |
O2—C8—H8A | 109.9 | C29—C28—N2 | 121.8 (3) |
C9—C8—H8B | 109.9 | C33—C28—N2 | 118.7 (3) |
O2—C8—H8B | 109.9 | C28—C29—C30 | 120.1 (4) |
H8A—C8—H8B | 108.3 | C28—C29—H29 | 120.0 |
C8—C9—H9A | 109.5 | C30—C29—H29 | 120.0 |
C8—C9—H9B | 109.5 | C31—C30—C29 | 121.1 (4) |
H9A—C9—H9B | 109.5 | C31—C30—H30 | 119.5 |
C8—C9—H9C | 109.5 | C29—C30—H30 | 119.5 |
H9A—C9—H9C | 109.5 | C32—C31—C30 | 118.2 (4) |
H9B—C9—H9C | 109.5 | C32—C31—C35 | 120.2 (4) |
C11—C10—C15 | 117.0 (3) | C30—C31—C35 | 121.6 (4) |
C11—C10—C2 | 119.3 (3) | C31—C32—C33 | 121.0 (4) |
C15—C10—C2 | 123.6 (3) | C31—C32—H32 | 119.5 |
C12—C11—C10 | 121.5 (3) | C33—C32—H32 | 119.5 |
C12—C11—H11 | 119.3 | C28—C33—C32 | 120.1 (4) |
C10—C11—H11 | 119.3 | C28—C33—H33 | 119.9 |
C13—C12—C11 | 120.7 (3) | C32—C33—H33 | 119.9 |
C13—C12—H12 | 119.7 | C19—C34—H34A | 109.5 |
C11—C12—H12 | 119.7 | C19—C34—H34B | 109.5 |
C12—C13—C14 | 119.9 (4) | H34A—C34—H34B | 109.5 |
C12—C13—Cl1 | 120.5 (3) | C19—C34—H34C | 109.5 |
C14—C13—Cl1 | 119.5 (3) | H34A—C34—H34C | 109.5 |
C13—C14—C15 | 119.3 (3) | H34B—C34—H34C | 109.5 |
C13—C14—H14 | 120.4 | C31—C35—H35A | 109.5 |
C15—C14—H14 | 120.4 | C31—C35—H35B | 109.5 |
C14—C15—C10 | 121.7 (3) | H35A—C35—H35B | 109.5 |
C14—C15—H15 | 119.2 | C31—C35—H35C | 109.5 |
C10—C15—H15 | 119.2 | H35A—C35—H35C | 109.5 |
N1—C16—C21 | 121.6 (3) | H35B—C35—H35C | 109.5 |
C16—N1—C2—C3 | 149.8 (3) | C2—C10—C15—C14 | 176.6 (3) |
C6—N1—C2—C3 | −32.9 (4) | C6—N1—C16—C21 | 12.6 (4) |
C16—N1—C2—C10 | −82.0 (3) | C2—N1—C16—C21 | −170.0 (3) |
C6—N1—C2—C10 | 95.3 (3) | C6—N1—C16—C17 | −166.2 (3) |
N1—C2—C3—C4 | 44.2 (4) | C2—N1—C16—C17 | 11.2 (4) |
C10—C2—C3—C4 | −84.6 (3) | N1—C16—C17—C18 | 178.8 (3) |
N1—C2—C3—C7 | −133.7 (3) | C21—C16—C17—C18 | 0.0 (5) |
C10—C2—C3—C7 | 97.6 (4) | C16—C17—C18—C19 | −0.5 (5) |
C28—N2—C4—C3 | 164.0 (3) | C17—C18—C19—C20 | 0.6 (5) |
C28—N2—C4—C5 | −14.7 (5) | C17—C18—C19—C34 | −177.6 (3) |
C7—C3—C4—N2 | −3.8 (5) | C18—C19—C20—C21 | −0.2 (5) |
C2—C3—C4—N2 | 178.3 (3) | C34—C19—C20—C21 | 178.0 (3) |
C7—C3—C4—C5 | 174.9 (3) | C19—C20—C21—C16 | −0.3 (5) |
C2—C3—C4—C5 | −3.0 (4) | N1—C16—C21—C20 | −178.4 (3) |
N2—C4—C5—C6 | 131.0 (3) | C17—C16—C21—C20 | 0.4 (4) |
C3—C4—C5—C6 | −47.9 (4) | N1—C6—C22—C23 | −28.6 (4) |
C16—N1—C6—C22 | −73.9 (3) | C5—C6—C22—C23 | 95.9 (3) |
C2—N1—C6—C22 | 108.7 (3) | N1—C6—C22—C27 | 154.7 (3) |
C16—N1—C6—C5 | 161.4 (2) | C5—C6—C22—C27 | −80.8 (3) |
C2—N1—C6—C5 | −16.0 (4) | C27—C22—C23—C24 | 1.2 (5) |
C4—C5—C6—N1 | 56.5 (3) | C6—C22—C23—C24 | −175.6 (3) |
C4—C5—C6—C22 | −70.6 (3) | C22—C23—C24—C25 | −0.7 (5) |
C8—O2—C7—O1 | 3.0 (5) | C23—C24—C25—C26 | −1.0 (5) |
C8—O2—C7—C3 | −176.3 (3) | C23—C24—C25—Cl2 | 179.4 (2) |
C4—C3—C7—O1 | 5.2 (5) | C24—C25—C26—C27 | 2.2 (5) |
C2—C3—C7—O1 | −177.0 (3) | Cl2—C25—C26—C27 | −178.3 (2) |
C4—C3—C7—O2 | −175.6 (3) | C25—C26—C27—C22 | −1.7 (5) |
C2—C3—C7—O2 | 2.2 (4) | C23—C22—C27—C26 | 0.0 (4) |
C7—O2—C8—C9 | 174.9 (3) | C6—C22—C27—C26 | 176.9 (3) |
N1—C2—C10—C11 | −172.4 (3) | C4—N2—C28—C29 | 100.0 (4) |
C3—C2—C10—C11 | −44.8 (4) | C4—N2—C28—C33 | −79.7 (5) |
N1—C2—C10—C15 | 10.7 (4) | C33—C28—C29—C30 | −1.2 (6) |
C3—C2—C10—C15 | 138.3 (3) | N2—C28—C29—C30 | 179.1 (3) |
C15—C10—C11—C12 | −0.1 (5) | C28—C29—C30—C31 | 0.7 (6) |
C2—C10—C11—C12 | −177.2 (3) | C29—C30—C31—C32 | −0.6 (7) |
C10—C11—C12—C13 | 0.4 (5) | C29—C30—C31—C35 | −179.8 (4) |
C11—C12—C13—C14 | −0.2 (6) | C30—C31—C32—C33 | 0.8 (6) |
C11—C12—C13—Cl1 | 178.9 (3) | C35—C31—C32—C33 | −179.9 (4) |
C12—C13—C14—C15 | −0.3 (5) | C29—C28—C33—C32 | 1.4 (6) |
Cl1—C13—C14—C15 | −179.4 (3) | N2—C28—C33—C32 | −178.8 (3) |
C13—C14—C15—C10 | 0.6 (5) | C31—C32—C33—C28 | −1.3 (6) |
C11—C10—C15—C14 | −0.4 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O1 | 0.86 | 2.10 | 2.707 (4) | 127 |
C9—H9A···Cl2i | 0.96 | 2.74 | 3.698 (4) | 173 |
Symmetry code: (i) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C34H32Cl2N2O2 |
Mr | 571.52 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 10.0851 (6), 12.4340 (8), 14.2414 (10) |
α, β, γ (°) | 113.405 (6), 102.233 (5), 101.194 (5) |
V (Å3) | 1522.63 (17) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.25 |
Crystal size (mm) | 0.30 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Sapphire3 diffractometer |
Absorption correction | Multi-scan (CrysAlis PRO; Oxford Diffraction, 2010) |
Tmin, Tmax | 0.853, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13336, 5342, 2181 |
Rint | 0.059 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.053, 0.109, 0.89 |
No. of reflections | 5342 |
No. of parameters | 365 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.25, −0.21 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O1 | 0.86 | 2.10 | 2.707 (4) | 127 |
C9—H9A···Cl2i | 0.96 | 2.74 | 3.698 (4) | 173 |
Symmetry code: (i) x, y+1, z. |
Acknowledgements
RK acknowledges the Department of Science & Technology for the single-crystal X-ray diffractometer sanctioned as a National Facility under project No. SR/S2/CMP-47/2003. GB is thankful to the CSIR, New Delhi, for financial support [grant No. 02 (110)/12/EMR-II]. VKG is thankful to the University of Jammu, Jammu, for financial support.
References
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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.
Functionalized piperidine scaffolds are the attractive structural motifs as they are found to constitute a pharmaceutically significant skeleton in numerous natural products (Pinder, 1992), synthetic pharmaceuticals (Breman et al., 2001; Watson et al., 2000), and a wide variety of biologically active compounds. A large number of compounds bearing piperidine scaffold have entered into preclinical and clinical trials over the last few years (Kamei et al., 2005). Continuing our interest in densely functionalized piperidines (Sambyal et al., 2011; Brahmachari & Das, 2012) we present here the crystal structure of the title compound (Fig. 1). Molecular structure of the title compound is similar to that of closely related structures (Khan et al., 2010; Anthal et al., 2013). The tetrahydropyridine ring adopts distorted boat conformation with asymmetry parameters [ΔCs(C2)=11.1] and [ΔCs(C3—C4)=16.9] (Duax et al., 1975). The dihedral angles between two 4-chlorophenyl rings[(C10-C15) and (C22-C27)] and two 4-tolyl rings[(C16-C21) and (C28-C33)]are 47.7 (1)° and 48.5 (1)° respectively. The dihedral angle between 4-chlorophenyl ring (C10-C15) and 4-tolyl ring (C28-C33) is 80.4 (1)°, between 4-tolyl ring (C16-C21) and 4-chlorophenyl ring (C22-C27) is 88.7 (1)°, between 4-chlorophenyl ring (C22-C27) and 4-tolyl ring (C28-C33) is 41.4 (1)° and 4-chlorophenyl ring (C10-C15) makes a dihedral angle of 68.7 (1)° with 4-tolyl ring (C16-C21). In the crystal, an intramolecular hydrogen bond N2—H2···O1 is found. The amino N1 atom links through H1 to the oxygen of the carbonyl group. This interaction leads to the formation of a pseudo-six membered ring comprising atoms O1, C7, C3, C4, N2 and H2. Packing view of the molecules in the unit cell viewed down the a axis is shown in Fig.2. Weak intermolecular C—H···Cl interactions (Table 1) link the molecules into chains parallel to [010].