organic compounds
1-(3,4-Dihydroxyphenyl)-2-(4-hydroxyphenyl)ethanone
aKey Laboratory of Plant Resources Conservation and Utilization (Jishou University), College of Hunan Province, Jishou University, Jishou 416000, People's Republic of China, and bCollege of Chemistry & Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
*Correspondence e-mail: xiaozhuping2005@163.com
The title compound, C14H12O4, is a deoxybenzoin derivative in which the dihedral between the carbonyl group and the catechol unit is 5.99 (3)°. The dihedral angle between the two benzene rings is 60.26 (13)°. In the intermolecular O—H⋯O hydrogen bonds connect molecules, forming a two-dimensional network. In addition, weak intermolecular C—H⋯O hydrogen bonds and C—H⋯π contacts further stabilize the crystal structure.
Related literature
For synthetic applications of deoxybenzoin compounds, see: Xiao et al. (2007a, 2008a). For natural occurences of these compounds. see: Kiuchi et al. (1990); Niwa et al. (1999); Sanduja et al. (1985). For their biological activity, see: Papoutsi et al. (2007); Xiao et al. (2007b, 2008b); Parmar et al. (1996). For a related structure, see: Xiao & Xiao (2008c).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2007); cell SAINT (Bruker, 2007); 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/S1600536809049393/lh2957sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809049393/lh2957Isup2.hkl
0.55 g (5 mmol) of catechol and 0.76 g (5 mmol) of p-hydroxyphenylacetic acid were dissolved into 10 ml of fresh distilled BF3.Et2O. The mixture was stirred and heated on an oil bath at 353 K for about 3 h. After cooling, the contents were poured into 150 ml of ice-cold aqueous sodium acetate (w % = 10%) with stirring. Then, the precipitate was filtered and washed three times with water. The resulting solid was crystallized from methanol-water to give colorless blocks of (I) suitable for single-crystal structure determination.
All H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with C—H of 0.93 Å for the aromatic atoms, 0.97 Å for the CH2 groups and 0.82 Å for the OH groups. Uiso(H) values were set at 1.2 times Ueq(C) for aromatic C and CH2 groups and 1.5 times Ueq(O) for O—H groups.
Data collection: SMART (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); 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).Fig. 1. Molecular structure of the title compound, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. | |
Fig. 2. Part of the crystal structure of (I) with hydrogen bonds indicated by thin dashed lines and C—H···π contacts shown as thick dashed lines. |
C14H12O4 | Z = 2 |
Mr = 244.24 | F(000) = 256 |
Triclinic, P1 | Dx = 1.413 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 5.7073 (11) Å | Cell parameters from 1785 reflections |
b = 9.3464 (19) Å | θ = 2.0–26.0° |
c = 11.202 (2) Å | µ = 0.10 mm−1 |
α = 100.112 (9)° | T = 296 K |
β = 94.792 (9)° | Block, colorless |
γ = 100.625 (9)° | 0.30 × 0.20 × 0.20 mm |
V = 573.99 (19) Å3 |
Bruker SMART APEX CCD diffractometer | 2214 independent reflections |
Radiation source: fine-focus sealed tube | 1756 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
ϕ and ω scans | θmax = 26.0°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −7→6 |
Tmin = 0.970, Tmax = 0.980 | k = −11→6 |
3179 measured reflections | l = −13→13 |
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)] = 0.055 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.172 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.1062P)2 + 0.1004P] where P = (Fo2 + 2Fc2)/3 |
2214 reflections | (Δ/σ)max < 0.001 |
166 parameters | Δρmax = 0.26 e Å−3 |
0 restraints | Δρmin = −0.32 e Å−3 |
C14H12O4 | γ = 100.625 (9)° |
Mr = 244.24 | V = 573.99 (19) Å3 |
Triclinic, P1 | Z = 2 |
a = 5.7073 (11) Å | Mo Kα radiation |
b = 9.3464 (19) Å | µ = 0.10 mm−1 |
c = 11.202 (2) Å | T = 296 K |
α = 100.112 (9)° | 0.30 × 0.20 × 0.20 mm |
β = 94.792 (9)° |
Bruker SMART APEX CCD diffractometer | 2214 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1756 reflections with I > 2σ(I) |
Tmin = 0.970, Tmax = 0.980 | Rint = 0.028 |
3179 measured reflections |
R[F2 > 2σ(F2)] = 0.055 | 0 restraints |
wR(F2) = 0.172 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.26 e Å−3 |
2214 reflections | Δρmin = −0.32 e Å−3 |
166 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 | 0.0231 (3) | 0.4370 (2) | 0.17089 (17) | 0.0357 (4) | |
C2 | 0.2221 (3) | 0.4285 (2) | 0.24884 (17) | 0.0342 (4) | |
C3 | 0.2784 (3) | 0.5201 (2) | 0.36129 (17) | 0.0357 (5) | |
H3 | 0.4123 | 0.5140 | 0.4120 | 0.043* | |
C4 | 0.1374 (3) | 0.62287 (19) | 0.40118 (17) | 0.0335 (4) | |
C5 | −0.0606 (3) | 0.6309 (2) | 0.32327 (18) | 0.0364 (5) | |
H5 | −0.1561 | 0.6986 | 0.3480 | 0.044* | |
C6 | −0.1164 (3) | 0.5392 (2) | 0.20949 (18) | 0.0382 (5) | |
H6 | −0.2490 | 0.5460 | 0.1582 | 0.046* | |
C7 | 0.2107 (4) | 0.7192 (2) | 0.52317 (18) | 0.0377 (5) | |
C8 | 0.0779 (4) | 0.8423 (2) | 0.56251 (19) | 0.0434 (5) | |
H8A | 0.0603 | 0.8942 | 0.4956 | 0.052* | |
H8B | −0.0821 | 0.7977 | 0.5769 | 0.052* | |
C9 | 0.1937 (3) | 0.9545 (2) | 0.67514 (18) | 0.0376 (5) | |
C10 | 0.4194 (4) | 1.0415 (2) | 0.67929 (19) | 0.0464 (5) | |
H10 | 0.5049 | 1.0265 | 0.6126 | 0.056* | |
C11 | 0.5210 (4) | 1.1498 (2) | 0.77965 (19) | 0.0466 (5) | |
H11 | 0.6730 | 1.2070 | 0.7802 | 0.056* | |
C12 | 0.3970 (3) | 1.1730 (2) | 0.87899 (17) | 0.0375 (5) | |
C13 | 0.1733 (4) | 1.0874 (2) | 0.8778 (2) | 0.0497 (6) | |
H13 | 0.0887 | 1.1019 | 0.9449 | 0.060* | |
C14 | 0.0751 (4) | 0.9795 (2) | 0.7761 (2) | 0.0497 (6) | |
H14 | −0.0763 | 0.9220 | 0.7760 | 0.060* | |
O1 | −0.0188 (3) | 0.34464 (17) | 0.06112 (13) | 0.0505 (4) | |
H1 | −0.1572 | 0.3388 | 0.0313 | 0.076* | |
O2 | 0.3534 (2) | 0.32578 (15) | 0.20545 (12) | 0.0420 (4) | |
H2 | 0.4435 | 0.3133 | 0.2620 | 0.063* | |
O3 | 0.3760 (3) | 0.70119 (18) | 0.59031 (14) | 0.0609 (5) | |
O4 | 0.5023 (3) | 1.28604 (17) | 0.97474 (14) | 0.0507 (4) | |
H4 | 0.4249 | 1.2818 | 1.0329 | 0.076* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0337 (10) | 0.0355 (9) | 0.0340 (10) | 0.0061 (7) | −0.0017 (7) | 0.0002 (8) |
C2 | 0.0314 (10) | 0.0336 (9) | 0.0374 (10) | 0.0096 (7) | 0.0032 (7) | 0.0034 (8) |
C3 | 0.0340 (10) | 0.0344 (9) | 0.0373 (10) | 0.0113 (8) | −0.0047 (8) | 0.0028 (8) |
C4 | 0.0343 (10) | 0.0291 (9) | 0.0366 (10) | 0.0096 (7) | −0.0001 (8) | 0.0036 (7) |
C5 | 0.0319 (10) | 0.0337 (9) | 0.0433 (11) | 0.0123 (7) | 0.0005 (8) | 0.0028 (8) |
C6 | 0.0317 (10) | 0.0392 (10) | 0.0412 (11) | 0.0101 (8) | −0.0056 (8) | 0.0027 (8) |
C7 | 0.0404 (11) | 0.0330 (9) | 0.0402 (11) | 0.0141 (8) | −0.0016 (8) | 0.0045 (8) |
C8 | 0.0404 (11) | 0.0383 (10) | 0.0479 (12) | 0.0162 (8) | −0.0047 (9) | −0.0052 (9) |
C9 | 0.0377 (11) | 0.0328 (9) | 0.0413 (11) | 0.0149 (8) | −0.0002 (8) | −0.0011 (8) |
C10 | 0.0429 (12) | 0.0534 (12) | 0.0379 (11) | 0.0079 (9) | 0.0099 (9) | −0.0047 (9) |
C11 | 0.0358 (11) | 0.0521 (12) | 0.0443 (12) | 0.0021 (9) | 0.0057 (9) | −0.0040 (9) |
C12 | 0.0379 (11) | 0.0371 (10) | 0.0345 (10) | 0.0116 (8) | −0.0008 (8) | −0.0030 (8) |
C13 | 0.0486 (13) | 0.0489 (12) | 0.0470 (13) | 0.0061 (10) | 0.0174 (10) | −0.0046 (10) |
C14 | 0.0391 (12) | 0.0420 (11) | 0.0610 (14) | 0.0010 (9) | 0.0114 (10) | −0.0039 (10) |
O1 | 0.0472 (9) | 0.0560 (9) | 0.0417 (9) | 0.0205 (7) | −0.0100 (7) | −0.0116 (7) |
O2 | 0.0402 (8) | 0.0456 (8) | 0.0390 (8) | 0.0206 (6) | −0.0024 (6) | −0.0043 (6) |
O3 | 0.0755 (12) | 0.0577 (10) | 0.0467 (9) | 0.0401 (8) | −0.0243 (8) | −0.0110 (7) |
O4 | 0.0450 (9) | 0.0559 (9) | 0.0415 (8) | 0.0076 (7) | 0.0011 (6) | −0.0119 (7) |
C1—O1 | 1.348 (2) | C8—H8B | 0.9700 |
C1—C6 | 1.388 (3) | C9—C14 | 1.373 (3) |
C1—C2 | 1.396 (3) | C9—C10 | 1.383 (3) |
C2—C3 | 1.369 (3) | C10—C11 | 1.378 (3) |
C2—O2 | 1.372 (2) | C10—H10 | 0.9300 |
C3—C4 | 1.402 (3) | C11—C12 | 1.375 (3) |
C3—H3 | 0.9300 | C11—H11 | 0.9300 |
C4—C5 | 1.390 (2) | C12—C13 | 1.374 (3) |
C4—C7 | 1.479 (3) | C12—O4 | 1.374 (2) |
C5—C6 | 1.382 (3) | C13—C14 | 1.382 (3) |
C5—H5 | 0.9300 | C13—H13 | 0.9300 |
C6—H6 | 0.9300 | C14—H14 | 0.9300 |
C7—O3 | 1.212 (2) | O1—H1 | 0.8200 |
C7—C8 | 1.514 (3) | O2—H2 | 0.8200 |
C8—C9 | 1.506 (3) | O4—H4 | 0.8200 |
C8—H8A | 0.9700 | ||
O1—C1—C6 | 124.22 (17) | C9—C8—H8B | 108.4 |
O1—C1—C2 | 116.86 (17) | C7—C8—H8B | 108.4 |
C6—C1—C2 | 118.92 (17) | H8A—C8—H8B | 107.4 |
C3—C2—O2 | 123.43 (16) | C14—C9—C10 | 117.12 (19) |
C3—C2—C1 | 120.35 (17) | C14—C9—C8 | 121.34 (19) |
O2—C2—C1 | 116.22 (16) | C10—C9—C8 | 121.47 (19) |
C2—C3—C4 | 121.03 (16) | C11—C10—C9 | 121.7 (2) |
C2—C3—H3 | 119.5 | C11—C10—H10 | 119.1 |
C4—C3—H3 | 119.5 | C9—C10—H10 | 119.1 |
C5—C4—C3 | 118.43 (17) | C12—C11—C10 | 119.8 (2) |
C5—C4—C7 | 123.56 (16) | C12—C11—H11 | 120.1 |
C3—C4—C7 | 118.00 (16) | C10—C11—H11 | 120.1 |
C6—C5—C4 | 120.53 (17) | C13—C12—O4 | 122.75 (18) |
C6—C5—H5 | 119.7 | C13—C12—C11 | 119.75 (19) |
C4—C5—H5 | 119.7 | O4—C12—C11 | 117.47 (18) |
C5—C6—C1 | 120.75 (17) | C12—C13—C14 | 119.4 (2) |
C5—C6—H6 | 119.6 | C12—C13—H13 | 120.3 |
C1—C6—H6 | 119.6 | C14—C13—H13 | 120.3 |
O3—C7—C4 | 120.71 (17) | C9—C14—C13 | 122.2 (2) |
O3—C7—C8 | 120.36 (18) | C9—C14—H14 | 118.9 |
C4—C7—C8 | 118.93 (15) | C13—C14—H14 | 118.9 |
C9—C8—C7 | 115.66 (16) | C1—O1—H1 | 109.5 |
C9—C8—H8A | 108.4 | C2—O2—H2 | 109.5 |
C7—C8—H8A | 108.4 | C12—O4—H4 | 109.5 |
O1—C1—C2—C3 | 179.11 (17) | C3—C4—C7—C8 | 173.33 (18) |
C6—C1—C2—C3 | −0.2 (3) | O3—C7—C8—C9 | 11.5 (3) |
O1—C1—C2—O2 | −0.5 (3) | C4—C7—C8—C9 | −167.73 (17) |
C6—C1—C2—O2 | −179.76 (17) | C7—C8—C9—C14 | −121.6 (2) |
O2—C2—C3—C4 | −179.83 (17) | C7—C8—C9—C10 | 61.4 (3) |
C1—C2—C3—C4 | 0.6 (3) | C14—C9—C10—C11 | −0.6 (3) |
C2—C3—C4—C5 | −0.6 (3) | C8—C9—C10—C11 | 176.50 (18) |
C2—C3—C4—C7 | −179.35 (16) | C9—C10—C11—C12 | 0.1 (3) |
C3—C4—C5—C6 | 0.2 (3) | C10—C11—C12—C13 | 0.4 (3) |
C7—C4—C5—C6 | 178.83 (17) | C10—C11—C12—O4 | −177.56 (18) |
C4—C5—C6—C1 | 0.3 (3) | O4—C12—C13—C14 | 177.42 (18) |
O1—C1—C6—C5 | −179.49 (18) | C11—C12—C13—C14 | −0.5 (3) |
C2—C1—C6—C5 | −0.3 (3) | C10—C9—C14—C13 | 0.6 (3) |
C5—C4—C7—O3 | 175.4 (2) | C8—C9—C14—C13 | −176.54 (19) |
C3—C4—C7—O3 | −5.9 (3) | C12—C13—C14—C9 | −0.1 (3) |
C5—C4—C7—C8 | −5.3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O4i | 0.82 | 1.94 | 2.744 (2) | 168 |
O2—H2···O3ii | 0.82 | 1.91 | 2.7274 (19) | 171 |
O4—H4···O2iii | 0.82 | 2.00 | 2.772 (2) | 158 |
C3—H3···O3ii | 0.93 | 2.53 | 3.191 (2) | 129 |
C11—H11···Cg1iv | 0.93 | 2.85 | 3.635 (2) | 143 |
Symmetry codes: (i) x−1, y−1, z−1; (ii) −x+1, −y+1, −z+1; (iii) x, y+1, z+1; (iv) −x+1, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C14H12O4 |
Mr | 244.24 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 296 |
a, b, c (Å) | 5.7073 (11), 9.3464 (19), 11.202 (2) |
α, β, γ (°) | 100.112 (9), 94.792 (9), 100.625 (9) |
V (Å3) | 573.99 (19) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.30 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.970, 0.980 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3179, 2214, 1756 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.055, 0.172, 1.06 |
No. of reflections | 2214 |
No. of parameters | 166 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.26, −0.32 |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O4i | 0.82 | 1.94 | 2.744 (2) | 167.7 |
O2—H2···O3ii | 0.82 | 1.91 | 2.7274 (19) | 171.3 |
O4—H4···O2iii | 0.82 | 2.00 | 2.772 (2) | 157.7 |
C3—H3···O3ii | 0.93 | 2.53 | 3.191 (2) | 128.5 |
C11—H11···Cg1iv | 0.93 | 2.85 | 3.635 (2) | 143.0 |
Symmetry codes: (i) x−1, y−1, z−1; (ii) −x+1, −y+1, −z+1; (iii) x, y+1, z+1; (iv) −x+1, −y+2, −z+1. |
Acknowledgements
This research was supported financially by the Key Laboratory of Plant Resources Conservation and Utilization (Jishou University), College of Hunan Province (grant No. JSK200904) and the Key Laboratory of Hunan Forest Products and Chemical Industry Engineering of Hunan Province (grant No. JDZ200904).
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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.
Deoxybenzoin compounds are intermediates in the syntheses of isoflavones (Xiao et al., 2008a; Xiao et al., 2007a) and are found in several plants, such as Glycyrrhiza sp., Trifolium subterraneum and Ononis spinosa, and marine sources (Kiuchi et al., 1990; Niwa et al., 1999; Sanduja et al., 1985). Many deoxybenzoin compounds have shown significant estrogen receptor modulatory, urease inhibitory, antimicrobial and antiviral properties (Papoutsi et al., 2007; Xiao et al., 2007b; Xiao et al., 2008b; Parmar et al., 1996). As part of our work involving the synthesis of a series of deoxybenzoin derivatives for urease inhibitory activity screening we report herein the crystal structure of the title deoxybenzoin derivative (I).
The molecular structure of the title compound is shown in Fig. 1. The two benzene rings form a dihedral angle of 60.26 (13) °. The carbonyl group forms a dihedral angle of 5.99 (3) ° with the catechol moiety [O1/O2/C1-C6] while a similar angle is 1.95 (13)° in our previous related crystal structure (Xiao et al., 2008c). In the crystal structure, intermolecular O—H···O connect molecules to form a two-dimensional network. In addition, weak intermolecular C—H···O hydrogen bonds and C—H···π contacts further stabilize the crystal structure (see Fig. 2).