organic compounds
Benzoylmethyl pyridine-4-carboxylate
aThe Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, Xiamen University, Xiamen 361005, People's Republic of China, and bDepartment of Chemistry, Xiamen University, Xiamen 361005, People's Republic of China
*Correspondence e-mail: t12g21@xmu.edu.cn
In the 14H11NO3, isolated from the reaction of 2-bromo-1-phenylethanone and pyridine-4-carboxylic acid using triethylamine as a base to deprotonate the organic acid, the molecular packing is stabilized by C—H⋯π interactions involving the phenyl and pyridine rings. The C—C—O—C torsion angle for the linkage between the two carbonyl groups is −80.8 (2)°, and the planes of the phenyl and pyridyl rings form a dihedral angle of 65.8 (1)°.
of the title compound, CRelated literature
For related literature, see: Allen et al. (1987); Hendrickson & Kandall (1970); Pavel et al. (1993).
Experimental
Crystal data
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Refinement
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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: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808014086/cf2193sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808014086/cf2193Isup2.hkl
The title compound was prepared by a method based on one described by Hendrickson & Kandall (1970). Triethylamine (1.0 ml, 7.5 mmol) was added dropwise to a mixture of 2-bromo-1-phenylethanone (995 mg, 5 mmol) and pyridine-4-carboxylic acid (615 mg, 5 mmol) in freshly distilled tetrahydrofuran (20 ml) at room temperature under argon and stirred overnight. The precipitate was collected at the pump and washed with ethyl acetate. The filtrate and washings were combined and back-washed successively with 1/3 of the volume each of 10% citric acid, 10% sodium bicarbonate, and water and then dried. Solvent was distilled off in vacuo and the residue recrystallized repeatedly from ethyl acetate-petroleum ether, giving 1.04 g (86%) as colourless needles.
The hydrogen atoms were positioned geometrically (C—H = 0.93, 0.98, 0.97 or 0.96Å for aromatic, tertiary, methylene or methyl H atoms respectively) and were included in the
in the riding model approximation. The displacement parameters of methyl H atoms were set to 1.5Ueq(C), while those of other H atoms were set to 1.2Ueq(C).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: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of (I) with the atom-labelling scheme, showing 50% probability displacement ellipsoids. H atoms are drawn as spheres of arbitrary radius. | |
Fig. 2. A view of the C—H···π interactions motif of (I). CgA and CgB are the centroids of the benzene and pyridine rings respectively. The C—H···π interactions are shown as dashed lines. The molecules labelled with same color are in one plane. [Symmetry code: (i) x-1, y, z+1; (ii) x-1, y, z; (iii) -x, 1-y, 2-z.]" |
C14H11NO3 | Z = 2 |
Mr = 241.24 | F(000) = 252 |
Triclinic, P1 | Dx = 1.373 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.0863 (6) Å | Cell parameters from 1153 reflections |
b = 9.2130 (7) Å | θ = 2.4–32.7° |
c = 9.3291 (8) Å | µ = 0.10 mm−1 |
α = 106.738 (7)° | T = 173 K |
β = 114.495 (8)° | Needle, colorless |
γ = 96.549 (6)° | 0.30 × 0.17 × 0.12 mm |
V = 583.52 (8) Å3 |
Bruker APEX CCD diffractometer | 2011 independent reflections |
Radiation source: fine-focus sealed tube | 1099 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.042 |
Detector resolution: 16.1903 pixels mm-1 | θmax = 25.0°, θmin = 2.4° |
ϕ and ω scans | h = −9→9 |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | k = −10→9 |
Tmin = 0.971, Tmax = 0.988 | l = −10→11 |
4945 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)] = 0.039 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.074 | H-atom parameters constrained |
S = 0.82 | w = 1/[σ2(Fo2) + (0.0282P)2] where P = (Fo2 + 2Fc2)/3 |
2011 reflections | (Δ/σ)max < 0.001 |
163 parameters | Δρmax = 0.11 e Å−3 |
0 restraints | Δρmin = −0.13 e Å−3 |
C14H11NO3 | γ = 96.549 (6)° |
Mr = 241.24 | V = 583.52 (8) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.0863 (6) Å | Mo Kα radiation |
b = 9.2130 (7) Å | µ = 0.10 mm−1 |
c = 9.3291 (8) Å | T = 173 K |
α = 106.738 (7)° | 0.30 × 0.17 × 0.12 mm |
β = 114.495 (8)° |
Bruker APEX CCD diffractometer | 2011 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 1099 reflections with I > 2σ(I) |
Tmin = 0.971, Tmax = 0.988 | Rint = 0.042 |
4945 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 0 restraints |
wR(F2) = 0.074 | H-atom parameters constrained |
S = 0.82 | Δρmax = 0.11 e Å−3 |
2011 reflections | Δρmin = −0.13 e Å−3 |
163 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 | ||
C1 | −0.1339 (2) | 0.7322 (2) | 1.1693 (2) | 0.0306 (5) | |
C2 | −0.3294 (2) | 0.6903 (2) | 1.0760 (2) | 0.0329 (5) | |
H2 | −0.3880 | 0.6499 | 0.9555 | 0.039* | |
C3 | −0.4385 (2) | 0.7073 (2) | 1.1574 (3) | 0.0359 (5) | |
H3 | −0.5721 | 0.6780 | 1.0931 | 0.043* | |
C4 | −0.3540 (3) | 0.7668 (2) | 1.3323 (3) | 0.0412 (5) | |
H4 | −0.4296 | 0.7781 | 1.3881 | 0.049* | |
C5 | −0.1609 (3) | 0.8098 (2) | 1.4261 (3) | 0.0428 (5) | |
H5 | −0.1030 | 0.8523 | 1.5465 | 0.051* | |
C6 | −0.0511 (3) | 0.7910 (2) | 1.3450 (2) | 0.0395 (5) | |
H6 | 0.0823 | 0.8186 | 1.4101 | 0.047* | |
C7 | −0.0110 (3) | 0.7152 (2) | 1.0855 (3) | 0.0382 (5) | |
O7 | 0.15653 (19) | 0.7341 (2) | 1.16374 (19) | 0.0670 (5) | |
C8 | −0.1064 (2) | 0.6727 (3) | 0.8971 (2) | 0.0435 (6) | |
H8B | −0.2071 | 0.5732 | 0.8425 | 0.052* | |
H8A | −0.1661 | 0.7559 | 0.8701 | 0.052* | |
O9 | 0.02347 (17) | 0.65426 (17) | 0.82904 (17) | 0.0437 (4) | |
C10 | 0.1269 (3) | 0.7883 (3) | 0.8448 (3) | 0.0385 (5) | |
O10 | 0.1180 (2) | 0.91629 (19) | 0.9139 (2) | 0.0649 (5) | |
C11 | 0.2487 (3) | 0.7577 (3) | 0.7621 (2) | 0.0313 (5) | |
C12 | 0.2426 (2) | 0.6074 (2) | 0.6700 (2) | 0.0320 (5) | |
H12 | 0.1609 | 0.5172 | 0.6585 | 0.038* | |
C13 | 0.3593 (2) | 0.5930 (2) | 0.5953 (2) | 0.0364 (5) | |
H13 | 0.3537 | 0.4900 | 0.5309 | 0.044* | |
N14 | 0.4789 (2) | 0.7134 (2) | 0.6074 (2) | 0.0396 (5) | |
C15 | 0.4825 (3) | 0.8565 (3) | 0.6977 (3) | 0.0420 (5) | |
H15 | 0.5670 | 0.9447 | 0.7090 | 0.050* | |
C16 | 0.3708 (3) | 0.8837 (2) | 0.7753 (2) | 0.0383 (5) | |
H16 | 0.3779 | 0.9881 | 0.8372 | 0.046* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0319 (10) | 0.0331 (13) | 0.0341 (12) | 0.0088 (9) | 0.0194 (9) | 0.0165 (11) |
C2 | 0.0308 (10) | 0.0375 (13) | 0.0332 (12) | 0.0093 (10) | 0.0170 (10) | 0.0140 (11) |
C3 | 0.0365 (11) | 0.0362 (13) | 0.0503 (14) | 0.0156 (10) | 0.0285 (11) | 0.0220 (12) |
C4 | 0.0579 (13) | 0.0397 (14) | 0.0509 (15) | 0.0211 (12) | 0.0400 (12) | 0.0257 (13) |
C5 | 0.0564 (14) | 0.0438 (14) | 0.0335 (12) | 0.0140 (12) | 0.0244 (12) | 0.0165 (12) |
C6 | 0.0389 (12) | 0.0429 (14) | 0.0373 (13) | 0.0097 (11) | 0.0170 (11) | 0.0176 (12) |
C7 | 0.0326 (11) | 0.0475 (14) | 0.0450 (13) | 0.0155 (11) | 0.0221 (11) | 0.0238 (12) |
O7 | 0.0326 (8) | 0.1257 (16) | 0.0589 (10) | 0.0276 (10) | 0.0249 (8) | 0.0486 (12) |
C8 | 0.0364 (11) | 0.0638 (16) | 0.0409 (13) | 0.0164 (12) | 0.0272 (11) | 0.0188 (13) |
O9 | 0.0439 (8) | 0.0525 (10) | 0.0496 (9) | 0.0144 (8) | 0.0353 (8) | 0.0186 (9) |
C10 | 0.0416 (12) | 0.0492 (15) | 0.0369 (13) | 0.0197 (12) | 0.0232 (11) | 0.0225 (13) |
O10 | 0.0978 (12) | 0.0517 (11) | 0.0899 (13) | 0.0419 (10) | 0.0749 (11) | 0.0320 (11) |
C11 | 0.0336 (10) | 0.0400 (12) | 0.0291 (11) | 0.0155 (10) | 0.0188 (9) | 0.0163 (11) |
C12 | 0.0328 (10) | 0.0362 (13) | 0.0321 (11) | 0.0091 (10) | 0.0192 (10) | 0.0133 (11) |
C13 | 0.0422 (11) | 0.0408 (14) | 0.0342 (12) | 0.0177 (11) | 0.0229 (10) | 0.0144 (11) |
N14 | 0.0452 (10) | 0.0467 (13) | 0.0401 (11) | 0.0170 (10) | 0.0269 (9) | 0.0216 (10) |
C15 | 0.0492 (12) | 0.0411 (14) | 0.0425 (13) | 0.0081 (12) | 0.0264 (12) | 0.0188 (12) |
C16 | 0.0501 (12) | 0.0354 (13) | 0.0390 (12) | 0.0159 (11) | 0.0274 (11) | 0.0153 (11) |
C1—C6 | 1.387 (2) | C8—H8B | 0.990 |
C1—C2 | 1.390 (2) | C8—H8A | 0.990 |
C1—C7 | 1.495 (2) | O9—C10 | 1.343 (2) |
C2—C3 | 1.378 (2) | C10—O10 | 1.196 (2) |
C2—H2 | 0.950 | C10—C11 | 1.488 (2) |
C3—C4 | 1.380 (3) | C11—C16 | 1.376 (2) |
C3—H3 | 0.950 | C11—C12 | 1.386 (3) |
C4—C5 | 1.374 (3) | C12—C13 | 1.384 (2) |
C4—H4 | 0.950 | C12—H12 | 0.950 |
C5—C6 | 1.381 (2) | C13—N14 | 1.330 (2) |
C5—H5 | 0.950 | C13—H13 | 0.950 |
C6—H6 | 0.950 | N14—C15 | 1.334 (2) |
C7—O7 | 1.204 (2) | C15—C16 | 1.375 (2) |
C7—C8 | 1.499 (3) | C15—H15 | 0.950 |
C8—O9 | 1.4371 (19) | C16—H16 | 0.950 |
C6—C1—C2 | 118.97 (16) | O9—C8—H8A | 109.2 |
C6—C1—C7 | 119.22 (17) | C7—C8—H8A | 109.2 |
C2—C1—C7 | 121.80 (17) | H8B—C8—H8A | 107.9 |
C3—C2—C1 | 120.25 (18) | C10—O9—C8 | 115.55 (15) |
C3—C2—H2 | 119.9 | O10—C10—O9 | 123.68 (17) |
C1—C2—H2 | 119.9 | O10—C10—C11 | 124.4 (2) |
C2—C3—C4 | 120.10 (18) | O9—C10—C11 | 111.85 (18) |
C2—C3—H3 | 119.9 | C16—C11—C12 | 118.45 (16) |
C4—C3—H3 | 119.9 | C16—C11—C10 | 118.77 (19) |
C5—C4—C3 | 120.23 (17) | C12—C11—C10 | 122.77 (19) |
C5—C4—H4 | 119.9 | C13—C12—C11 | 117.82 (17) |
C3—C4—H4 | 119.9 | C13—C12—H12 | 121.1 |
C4—C5—C6 | 119.85 (19) | C11—C12—H12 | 121.1 |
C4—C5—H5 | 120.1 | N14—C13—C12 | 124.53 (18) |
C6—C5—H5 | 120.1 | N14—C13—H13 | 117.7 |
C5—C6—C1 | 120.57 (18) | C12—C13—H13 | 117.7 |
C5—C6—H6 | 119.7 | C13—N14—C15 | 116.29 (15) |
C1—C6—H6 | 119.7 | N14—C15—C16 | 123.75 (19) |
O7—C7—C1 | 122.35 (18) | N14—C15—H15 | 118.1 |
O7—C7—C8 | 120.97 (16) | C16—C15—H15 | 118.1 |
C1—C7—C8 | 116.67 (15) | C15—C16—C11 | 119.15 (18) |
O9—C8—C7 | 112.06 (15) | C15—C16—H16 | 120.4 |
O9—C8—H8B | 109.2 | C11—C16—H16 | 120.4 |
C7—C8—H8B | 109.2 | ||
C6—C1—C2—C3 | 0.0 (3) | C8—O9—C10—O10 | 1.7 (3) |
C7—C1—C2—C3 | 179.89 (17) | C8—O9—C10—C11 | −176.62 (16) |
C1—C2—C3—C4 | 0.3 (3) | O10—C10—C11—C16 | 5.1 (3) |
C2—C3—C4—C5 | 0.2 (3) | O9—C10—C11—C16 | −176.53 (18) |
C3—C4—C5—C6 | −1.0 (3) | O10—C10—C11—C12 | −173.9 (2) |
C4—C5—C6—C1 | 1.4 (3) | O9—C10—C11—C12 | 4.4 (3) |
C2—C1—C6—C5 | −0.9 (3) | C16—C11—C12—C13 | −0.5 (3) |
C7—C1—C6—C5 | 179.23 (19) | C10—C11—C12—C13 | 178.58 (17) |
C6—C1—C7—O7 | 8.4 (3) | C11—C12—C13—N14 | 0.9 (3) |
C2—C1—C7—O7 | −171.5 (2) | C12—C13—N14—C15 | −0.5 (3) |
C6—C1—C7—C8 | −171.7 (2) | C13—N14—C15—C16 | −0.3 (3) |
C2—C1—C7—C8 | 8.4 (3) | N14—C15—C16—C11 | 0.6 (3) |
O7—C7—C8—O9 | 1.8 (3) | C12—C11—C16—C15 | −0.2 (3) |
C1—C7—C8—O9 | −178.06 (16) | C10—C11—C16—C15 | −179.31 (19) |
C7—C8—O9—C10 | −80.8 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4···CgBi | 0.95 | 3.86 | 4.766 (3) | 160 |
C2—H2···CgBii | 0.95 | 2.89 | 3.640 (3) | 137 |
C6—H6···CgBiii | 0.95 | 3.00 | 3.752 (3) | 137 |
C12—H12···CgAiv | 0.95 | 2.88 | 3.572 (3) | 130 |
Symmetry codes: (i) x−1, y, z+1; (ii) x−1, y, z; (iii) x, y, z+1; (iv) −x, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C14H11NO3 |
Mr | 241.24 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 173 |
a, b, c (Å) | 8.0863 (6), 9.2130 (7), 9.3291 (8) |
α, β, γ (°) | 106.738 (7), 114.495 (8), 96.549 (6) |
V (Å3) | 583.52 (8) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.30 × 0.17 × 0.12 |
Data collection | |
Diffractometer | Bruker APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.971, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4945, 2011, 1099 |
Rint | 0.042 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.074, 0.82 |
No. of reflections | 2011 |
No. of parameters | 163 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.11, −0.13 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997).
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4···CgBi | 0.95 | 3.86 | 4.766 (3) | 160 |
C2—H2···CgBii | 0.95 | 2.89 | 3.640 (3) | 137 |
C6—H6···CgBiii | 0.95 | 3.00 | 3.752 (3) | 137 |
C12—H12···CgAiv | 0.95 | 2.88 | 3.572 (3) | 130 |
Symmetry codes: (i) x−1, y, z+1; (ii) x−1, y, z; (iii) x, y, z+1; (iv) −x, −y+1, −z+2. |
Acknowledgements
We acknowledge the financial support of the National Natural Science Foundation of China (Nos. 20572061 and 20732004) and the Ministry of Science and Technology (No. 2006DFA43030).
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CrossRef Web of Science Google Scholar
Bruker (2001). SAINT, SMART and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Hendrickson, J. B. & Kandall, C. (1970). Tetrahedron Lett. 5, 343–344. CrossRef Google Scholar
Pavel, H., Heinrich, L. S. & Edward, W. S. (1993). J. Am. Chem. Soc. 116, 3500–3506. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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The title compound was synthesized for a study of protection of the carboxyl group. The phenacyl group has been proved to be an important reagent for protecting carboxyl functions during synthesis in the presence of other esters (Hendrickson et al., 1970).
The title compound (I) was obtained by the reaction of 2-bromo-1-phenylethanone and pyridine-4-carboxylic acid using triethylamine as a base to deprotonate the organic acid. An X-ray crystal structure determination of compound (I) was carried out to determine its conformation. Bond lengths and angles are in agreement with values reported in the literature (Allen et al., 1987). The torsion angle C7-C8-O9-C10 [-80.8 (2)Å] describes the conformation of the phenyl group with respect to the pyridyl group; the planes of the benzene ring and the pyridine ring form a dihedral angle of 65.8 (1)Å.
In the crystal structure of (I), the phenyl and pyridyl rings make a dihedral angle of 65.8 (1)° and the C7—C8—O9—C10 torsion angle is -80.8 (2)° (Fig. 1). The packing of the aromatic rings is shown in Fig. 2. Two head-to-tail molecules (M and Mi) are linked by C—H···π interactions with typical geometry (Pavel et al., 1993), leading to the formation of a linear chain. The distance between CgA and CgBi is 6.102 (3) Å and the angles between the lines through the centroids of the two rings and the normal through CgA is 79.5 (1)° and through CgBi is 76.8 (1)°. The linear chains are further stabilized by other C—H···π interactions (M and Mii; Mi and Mii), generating sheets parallel to (010). The corresponding values for the phenyl ring in M and the pyridyl ring in Mii are 4.857 (3) Å, 69.3 (1)° and 13.7 (1)°. For the phenyl ring in Mii and the pyridyl ring in Mi they are 4.954 (3) Å, 69.4 (1)° and 16.6 (1)°. C—H···π interactions between two sheets (M and Miii) also provide stability for the crystal structure. The corresponding values for the two adjacent aromatic rings in M and Miii are 4.721 (3)Å, 14.5 (1)° and 66.4 (1)°. CgA and CgB stand for the centroids of phenyl and pyridyl rings respectively. [Symmetry codes: (i) x - 1, y, z + 1; (ii) x - 1, y, z; (iii) -x, 1 - y, 2 - z.]