organic compounds
2-(4-Carboxypiperidinium-1-yl)pyridine-3-carboxylate
aCollege of Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
*Correspondence e-mail: pingfan@lnu.edu.cn
The title compound, C12H14N2O4, crystallizes as a zwitterion. A negative charge is delocalized in the deprotonated carboxyl group attached to the pyridine ring. The piperidine N atom accepts a proton and the ring is transformed into a piperidinium cation. There is an intramolecular N—H⋯O hydrogen bond between the protonated NH and a carboxylate O atom. In the crystal, an O—H⋯O hydrogen bond between the carboxyl group and the carboxylate O atom of another molecule generates a helix along the b axis.
Related literature
For the synthesis, see: Shreder et al. (2009); Léost et al. (1997); Bonnet et al. (2002).
Experimental
Crystal data
|
Refinement
|
Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536812005752/kp2382sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812005752/kp2382Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812005752/kp2382Isup3.cml
A mixture of 2-(4-methoxycarbonylpiperidin-1-yl)-3-pyridine formic acid ethyl ester (3.02 g, 10.7 mmol), NaOH (3.00 g, 75.0 mmol) and H2O (50 mL) was heated at reflux for 4 h. After cooling, the pH of resulting mixture was adjusted to 4–5 with dilute hydrochloric acid. After 12 h, a lot of white solid was precipitated. The precipitate was filtrated and dried, yield 73.9%, mp 481.8-483.2 K. Single crystal of the title compound was obtained by evaporating a solution of above-mentioned solid (0.2 mmol) in 11 mL ethanol.
H atoms attached to C atoms were positioned geometrically and refined using a riding model, with Csp3—H = 0.97 Å or Csp2—H = 0.93 Å and with Uiso(H) = 1.2Ueq(C). H atom attached to O atom was O—H = 0.82 Å and with Uiso(H) = 1.5Ueq(O). H atoms attached to N atom were located by difference Fourier synthesis and refined isotropically.
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C12H14N2O4 | F(000) = 528 |
Mr = 250.25 | Dx = 1.449 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P2ybc | Cell parameters from 361 reflections |
a = 7.1094 (14) Å | θ = 2.5–22.7° |
b = 18.667 (4) Å | µ = 0.11 mm−1 |
c = 8.6603 (17) Å | T = 293 K |
β = 93.57 (3)° | Block, colourless |
V = 1147.1 (4) Å3 | 0.20 × 0.20 × 0.20 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 2237 independent reflections |
Radiation source: fine-focus sealed tube | 1841 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
ϕ and ω scans | θmax = 26.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −8→8 |
Tmin = 0.964, Tmax = 0.983 | k = −23→21 |
6010 measured reflections | l = −10→7 |
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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.118 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.09 | w = 1/[σ2(Fo2) + (0.0685P)2 + 0.1385P] where P = (Fo2 + 2Fc2)/3 |
2237 reflections | (Δ/σ)max = 0.001 |
168 parameters | Δρmax = 0.22 e Å−3 |
0 restraints | Δρmin = −0.34 e Å−3 |
C12H14N2O4 | V = 1147.1 (4) Å3 |
Mr = 250.25 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.1094 (14) Å | µ = 0.11 mm−1 |
b = 18.667 (4) Å | T = 293 K |
c = 8.6603 (17) Å | 0.20 × 0.20 × 0.20 mm |
β = 93.57 (3)° |
Bruker SMART CCD area-detector diffractometer | 2237 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 1841 reflections with I > 2σ(I) |
Tmin = 0.964, Tmax = 0.983 | Rint = 0.022 |
6010 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.118 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.09 | Δρmax = 0.22 e Å−3 |
2237 reflections | Δρmin = −0.34 e Å−3 |
168 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 | ||
O4 | 0.06398 (16) | 0.42630 (6) | 0.56128 (13) | 0.0431 (3) | |
N2 | 0.41209 (16) | 0.63507 (6) | 0.81715 (14) | 0.0291 (3) | |
O3 | −0.10491 (16) | 0.44848 (6) | 0.76521 (13) | 0.0445 (3) | |
H3 | −0.1719 | 0.4164 | 0.7277 | 0.067* | |
N1 | 0.68999 (17) | 0.64666 (6) | 0.98026 (15) | 0.0373 (3) | |
O2 | 0.26774 (16) | 0.75408 (6) | 0.70841 (13) | 0.0466 (3) | |
C3 | 0.55581 (18) | 0.68088 (7) | 0.89789 (16) | 0.0278 (3) | |
C8 | 0.1114 (2) | 0.56996 (8) | 0.83901 (18) | 0.0355 (4) | |
H8A | 0.0488 | 0.6001 | 0.7604 | 0.043* | |
H8B | 0.0187 | 0.5552 | 0.9102 | 0.043* | |
C12 | 0.0444 (2) | 0.45637 (7) | 0.68272 (17) | 0.0314 (3) | |
O1 | 0.36031 (17) | 0.85729 (6) | 0.82086 (15) | 0.0534 (4) | |
C7 | 0.2667 (2) | 0.61218 (8) | 0.92594 (17) | 0.0357 (4) | |
H7A | 0.2134 | 0.6541 | 0.9730 | 0.043* | |
H7B | 0.3256 | 0.5828 | 1.0077 | 0.043* | |
C9 | 0.19275 (19) | 0.50397 (7) | 0.76289 (16) | 0.0301 (3) | |
H9 | 0.2557 | 0.4754 | 0.8458 | 0.036* | |
C10 | 0.3436 (2) | 0.52666 (8) | 0.65609 (17) | 0.0376 (4) | |
H10A | 0.4004 | 0.4843 | 0.6136 | 0.045* | |
H10B | 0.2858 | 0.5541 | 0.5707 | 0.045* | |
C2 | 0.53838 (18) | 0.75479 (7) | 0.88389 (16) | 0.0288 (3) | |
C11 | 0.4954 (2) | 0.57139 (8) | 0.74008 (19) | 0.0369 (4) | |
H11A | 0.5636 | 0.5422 | 0.8174 | 0.044* | |
H11B | 0.5842 | 0.5877 | 0.6670 | 0.044* | |
C1 | 0.3745 (2) | 0.79174 (8) | 0.79697 (18) | 0.0352 (4) | |
C5 | 0.8281 (2) | 0.76099 (9) | 1.03995 (19) | 0.0411 (4) | |
H5 | 0.9268 | 0.7873 | 1.0871 | 0.049* | |
C6 | 0.6822 (2) | 0.79468 (8) | 0.95705 (18) | 0.0358 (4) | |
H6 | 0.6801 | 0.8444 | 0.9501 | 0.043* | |
C4 | 0.8245 (2) | 0.68742 (9) | 1.05140 (19) | 0.0402 (4) | |
H4 | 0.9201 | 0.6649 | 1.1114 | 0.048* | |
H2A | 0.344 (3) | 0.6686 (11) | 0.742 (2) | 0.063 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O4 | 0.0449 (6) | 0.0350 (6) | 0.0484 (7) | 0.0028 (5) | −0.0044 (5) | −0.0133 (5) |
N2 | 0.0281 (6) | 0.0229 (6) | 0.0362 (7) | −0.0020 (5) | −0.0001 (5) | 0.0017 (5) |
O3 | 0.0428 (6) | 0.0447 (7) | 0.0460 (7) | −0.0203 (5) | 0.0027 (5) | −0.0074 (5) |
N1 | 0.0333 (7) | 0.0290 (7) | 0.0483 (8) | 0.0023 (5) | −0.0067 (6) | 0.0049 (5) |
O2 | 0.0421 (7) | 0.0400 (6) | 0.0551 (7) | 0.0019 (5) | −0.0171 (6) | 0.0043 (5) |
C3 | 0.0244 (7) | 0.0251 (7) | 0.0340 (7) | −0.0014 (5) | 0.0014 (6) | 0.0008 (5) |
C8 | 0.0297 (7) | 0.0333 (8) | 0.0438 (9) | −0.0055 (6) | 0.0053 (6) | −0.0074 (6) |
C12 | 0.0356 (8) | 0.0207 (7) | 0.0370 (8) | 0.0022 (6) | −0.0039 (6) | 0.0021 (6) |
O1 | 0.0497 (7) | 0.0295 (6) | 0.0787 (9) | 0.0131 (5) | −0.0153 (6) | −0.0008 (5) |
C7 | 0.0333 (8) | 0.0342 (8) | 0.0404 (8) | −0.0071 (6) | 0.0090 (6) | −0.0082 (6) |
C9 | 0.0318 (7) | 0.0257 (7) | 0.0323 (7) | −0.0019 (6) | −0.0016 (6) | 0.0019 (6) |
C10 | 0.0390 (8) | 0.0356 (8) | 0.0389 (8) | −0.0056 (6) | 0.0078 (7) | −0.0078 (6) |
C2 | 0.0264 (7) | 0.0252 (7) | 0.0350 (8) | 0.0014 (5) | 0.0036 (6) | 0.0008 (5) |
C11 | 0.0328 (7) | 0.0331 (8) | 0.0457 (9) | −0.0026 (6) | 0.0089 (6) | −0.0053 (7) |
C1 | 0.0325 (7) | 0.0302 (8) | 0.0426 (8) | 0.0039 (6) | −0.0006 (6) | 0.0039 (6) |
C5 | 0.0309 (8) | 0.0379 (9) | 0.0532 (10) | −0.0054 (6) | −0.0082 (7) | −0.0037 (7) |
C6 | 0.0327 (7) | 0.0257 (7) | 0.0488 (9) | −0.0022 (6) | 0.0006 (7) | −0.0010 (6) |
C4 | 0.0303 (7) | 0.0396 (9) | 0.0491 (9) | 0.0048 (6) | −0.0105 (7) | 0.0037 (7) |
O4—C12 | 1.2079 (18) | C7—H7A | 0.9700 |
N2—C3 | 1.4749 (17) | C7—H7B | 0.9700 |
N2—C11 | 1.5030 (18) | C9—C10 | 1.519 (2) |
N2—C7 | 1.5031 (18) | C9—H9 | 0.9800 |
N2—H2A | 1.01 (2) | C10—C11 | 1.515 (2) |
O3—C12 | 1.3240 (18) | C10—H10A | 0.9700 |
O3—H3 | 0.8200 | C10—H10B | 0.9700 |
N1—C3 | 1.3200 (18) | C2—C6 | 1.386 (2) |
N1—C4 | 1.342 (2) | C2—C1 | 1.514 (2) |
O2—C1 | 1.2593 (18) | C11—H11A | 0.9700 |
C3—C2 | 1.3897 (19) | C11—H11B | 0.9700 |
C8—C7 | 1.518 (2) | C5—C6 | 1.376 (2) |
C8—C9 | 1.528 (2) | C5—C4 | 1.377 (2) |
C8—H8A | 0.9700 | C5—H5 | 0.9300 |
C8—H8B | 0.9700 | C6—H6 | 0.9300 |
C12—C9 | 1.5142 (19) | C4—H4 | 0.9300 |
O1—C1 | 1.2462 (18) | ||
C3—N2—C11 | 112.86 (11) | C10—C9—H9 | 106.9 |
C3—N2—C7 | 110.53 (11) | C8—C9—H9 | 106.9 |
C11—N2—C7 | 111.03 (11) | C11—C10—C9 | 111.73 (12) |
C3—N2—H2A | 103.8 (11) | C11—C10—H10A | 109.3 |
C11—N2—H2A | 113.0 (11) | C9—C10—H10A | 109.3 |
C7—N2—H2A | 105.2 (11) | C11—C10—H10B | 109.3 |
C12—O3—H3 | 109.5 | C9—C10—H10B | 109.3 |
C3—N1—C4 | 116.38 (13) | H10A—C10—H10B | 107.9 |
N1—C3—C2 | 125.81 (13) | C6—C2—C3 | 115.73 (13) |
N1—C3—N2 | 115.57 (12) | C6—C2—C1 | 120.38 (12) |
C2—C3—N2 | 118.61 (12) | C3—C2—C1 | 123.88 (13) |
C7—C8—C9 | 110.46 (12) | N2—C11—C10 | 111.12 (12) |
C7—C8—H8A | 109.6 | N2—C11—H11A | 109.4 |
C9—C8—H8A | 109.6 | C10—C11—H11A | 109.4 |
C7—C8—H8B | 109.6 | N2—C11—H11B | 109.4 |
C9—C8—H8B | 109.6 | C10—C11—H11B | 109.4 |
H8A—C8—H8B | 108.1 | H11A—C11—H11B | 108.0 |
O4—C12—O3 | 123.91 (14) | O1—C1—O2 | 126.68 (14) |
O4—C12—C9 | 123.86 (13) | O1—C1—C2 | 115.64 (13) |
O3—C12—C9 | 112.14 (12) | O2—C1—C2 | 117.68 (12) |
N2—C7—C8 | 110.12 (12) | C6—C5—C4 | 118.46 (14) |
N2—C7—H7A | 109.6 | C6—C5—H5 | 120.8 |
C8—C7—H7A | 109.6 | C4—C5—H5 | 120.8 |
N2—C7—H7B | 109.6 | C5—C6—C2 | 120.24 (14) |
C8—C7—H7B | 109.6 | C5—C6—H6 | 119.9 |
H7A—C7—H7B | 108.1 | C2—C6—H6 | 119.9 |
C12—C9—C10 | 112.48 (11) | N1—C4—C5 | 123.25 (14) |
C12—C9—C8 | 113.54 (12) | N1—C4—H4 | 118.4 |
C10—C9—C8 | 109.78 (11) | C5—C4—H4 | 118.4 |
C12—C9—H9 | 106.9 |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3···O1i | 0.82 | 1.77 | 2.566 (2) | 166 |
N2—H2A···O2 | 1.01 (2) | 1.71 (2) | 2.599 (2) | 146.0 (16) |
Symmetry code: (i) −x, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C12H14N2O4 |
Mr | 250.25 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 7.1094 (14), 18.667 (4), 8.6603 (17) |
β (°) | 93.57 (3) |
V (Å3) | 1147.1 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.20 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.964, 0.983 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6010, 2237, 1841 |
Rint | 0.022 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.118, 1.09 |
No. of reflections | 2237 |
No. of parameters | 168 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.22, −0.34 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3···O1i | 0.82 | 1.77 | 2.566 (2) | 166 |
N2—H2A···O2 | 1.01 (2) | 1.71 (2) | 2.599 (2) | 146.0 (16) |
Symmetry code: (i) −x, y−1/2, −z+3/2. |
Acknowledgements
This work was supported financially by the National Natural Science Foundation of China (grant Nos. 20971062 and 21171081), the Science Foundation of the Education Department of Liaoning Province (grant No. L2011007) and the Foundation of 211 Project for Innovative Talents Training, Liaoning University.
References
Bonnet, V., Mongin, F., Trécourt, F., Quéguiner, G. & Knochel, P. (2002). Tetrahedron, 58, 4429–4438. Web of Science CrossRef CAS Google Scholar
Bruker (2001). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Léost, F., Chantegrel, B. & Deshayes, C. (1997). Tetrahedron, 53, 7557–7576. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Shreder, K. R., Cajica, J., Du, L., Fraser, A., Hu, Y. & Kohno, Y. (2009). Bioorg. Med. Chem. Lett. 19, 4743–4746. Web of Science CrossRef PubMed 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, 2-(4-carboxylpiperdinium-1-yl)pyridine-3-carboxylic acid is known as one of 2-chloronicotinic acid derivatives (Fig. 1). It has attracted a great deal of interest in recent years. A series of inhibitors of human neutrophil elastase have been synthesised based on this derivative. The piperidine ring is in a chair conformation. By the intramolecular N2—H2A···O2 hydrogen bond, the dihedral angle between the ring defined by N1/C2—C6 and the plane defined by N2/C8/C10 of piperidine is 70.3 °. The dihedral angle between the ring defined by N1/C2—C6 and the ring defined by C7—C9—C11 of piperidine is 71.6 °. Molecules are linked by intermolecular O—H···O hydrogen bonds to form a chain (Table 1, Fig. 2). There are weak π-π interactions (Fig. 2) with the plane to plane distances of 3.69 Å and 3.72 Å (x,3/2-y,-1/2+z; 3,372-y, 1/2+z] which result in the formation of supramolecular network.