organic compounds
E)-1-(4-hydroxy-3-methoxyphenyl)-3-(4-hydroxyphenyl)prop-2-en-1-one
of (2aPG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India, and bDepartment of Chemistry, Madras Christian College, Chennai-59, India
*Correspondence e-mail: guqmc@yahoo.com
In the title moleclue, C16H14O4, the dihedral angle between the benzene rings is 16.1 (3)°. The methoxy group is essentially coplanar with the benzene ring to which it is attached, with a C—O—C C torsion angle of 5.5 (9)°. In the crystal, molecules are linked by O—H⋯O and bifurcated O—H⋯(O,O) hydrogen bonds, forming a three-dimensional network. The structure was refined as a two-component inversion twin.
Keywords: crystal structure; prop-2-en-1-one; chalcones; biological activity; hydrogen bonding.
CCDC reference: 1011152
1. Related literature
For the biological activity of et al. (2008); Won et al. (2005); Yu et al. (1982); Ram et al. (2000); Khatib et al. (2005); Papo & Shai (2003). For related structures, see: Jasinski et al. (2011); Sathya et al. (2014). For the synthesis, see: Sidharthan et al. (2012); Chitra et al. (2013); Jasmine Francis et al. (2014).
see: Prasad2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL2013 (Sheldrick, 2008).
Supporting information
CCDC reference: 1011152
10.1107/S1600536814021953/lh5720sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814021953/lh5720Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814021953/lh5720Isup3.cml
This acid catalyzed Claisen–Schmidt reaction and the procedure (Sidharthan et al., 2012, Chitra et al., 2013, Jasmine Francis et al.,2014) adopted in the synthesis of the typical chalcone diol namely (2E)-1-(4-hydroxy-3- methoxyphenyl)-3-(4-hydroxyphenyl)prop-2-en-1-one is represented herein. Dry HCl gas was passed through a well cooled and stirred solution of 4-hydroxy-methoxyacetophenone (0.03 mol) and 4-hydroxybenzaldehyde (0.03 mol) in 125 mL of dry ethanol taken in a 250 mL round-bottomed flask for about one hour. Wine red coloured solution was formed to which ice cold water was added. The yellow coloured crystals of (2E)-1-(4-hydroxy-3-methoxyphenyl)-3- (4-hydroxyphenyl)prop-2-en-1-one which got separated was washed with double distilled water and re-crystallized from hot ethanol.
H atoms were positioned geometrically and treated as riding on their parent atoms, with C—H distances of 0.93–0.96 Å, O—H distances of 0.82 Å with Uiso(H) = 1.5 Ueq(Cmethyl) and Uiso(H) = 1.2Ueq(C) for other H atoms. The standard uncertainties on the a and c axes are larger than normal and are indicative of those determined from a poor quality crystal.
Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL2013 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound, with displacement ellipsoids drawn at the 30% probability level. Fig. 2. Part of the with dashed lines indicating hydrogen bonds. |
C16H14O4 | Dx = 1.309 Mg m−3 |
Mr = 270.27 | Mo Kα radiation, λ = 0.71073 Å |
Orthorhombic, Pna21 | Cell parameters from 2996 reflections |
a = 7.686 (16) Å | θ = 1.4–28.6° |
b = 28.346 (7) Å | µ = 0.09 mm−1 |
c = 6.297 (12) Å | T = 293 K |
V = 1371.9 (5) Å3 | Block, yellow |
Z = 4 | 0.35 × 0.30 × 0.25 mm |
F(000) = 568 |
Bruker Kappa APEXII diffractometer | 1928 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.055 |
ω and ϕ scans | θmax = 28.6°, θmin = 1.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −10→7 |
Tmin = 0.968, Tmax = 0.977 | k = −38→19 |
6436 measured reflections | l = −8→8 |
2996 independent reflections |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.077 | w = 1/[σ2(Fo2) + (0.1225P)2 + 0.7988P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.244 | (Δ/σ)max = 0.001 |
S = 1.07 | Δρmax = 0.33 e Å−3 |
2996 reflections | Δρmin = −0.30 e Å−3 |
186 parameters | Absolute structure: Refined as an inversion twin. |
1 restraint | Absolute structure parameter: −2 (4) |
C16H14O4 | V = 1371.9 (5) Å3 |
Mr = 270.27 | Z = 4 |
Orthorhombic, Pna21 | Mo Kα radiation |
a = 7.686 (16) Å | µ = 0.09 mm−1 |
b = 28.346 (7) Å | T = 293 K |
c = 6.297 (12) Å | 0.35 × 0.30 × 0.25 mm |
Bruker Kappa APEXII diffractometer | 2996 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 1928 reflections with I > 2σ(I) |
Tmin = 0.968, Tmax = 0.977 | Rint = 0.055 |
6436 measured reflections |
R[F2 > 2σ(F2)] = 0.077 | H-atom parameters constrained |
wR(F2) = 0.244 | Δρmax = 0.33 e Å−3 |
S = 1.07 | Δρmin = −0.30 e Å−3 |
2996 reflections | Absolute structure: Refined as an inversion twin. |
186 parameters | Absolute structure parameter: −2 (4) |
1 restraint |
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. Refined as a two-component inversion twin (1113 Friedel pairs). |
x | y | z | Uiso*/Ueq | ||
O1 | −0.3786 (6) | 0.30979 (16) | −0.5710 (8) | 0.0619 (14) | |
O2 | −0.1472 (7) | 0.59683 (14) | −0.4180 (10) | 0.0668 (14) | |
H2A | −0.1936 | 0.6120 | −0.5132 | 0.100* | |
O3 | −0.0576 (6) | 0.16926 (13) | 0.0881 (8) | 0.0509 (11) | |
H3A | −0.0369 | 0.1764 | 0.2118 | 0.076* | |
O4 | −0.2259 (7) | 0.15243 (14) | −0.2582 (7) | 0.0554 (12) | |
C1 | −0.1999 (8) | 0.5514 (2) | −0.4288 (11) | 0.0489 (14) | |
C2 | −0.1264 (9) | 0.5197 (2) | −0.2908 (11) | 0.0532 (16) | |
H2 | −0.0474 | 0.5303 | −0.1897 | 0.064* | |
C3 | −0.1667 (9) | 0.4730 (2) | −0.2989 (11) | 0.0543 (17) | |
H3 | −0.1154 | 0.4522 | −0.2031 | 0.065* | |
C4 | −0.2855 (8) | 0.4557 (2) | −0.4510 (11) | 0.0477 (15) | |
C5 | −0.3587 (9) | 0.4886 (2) | −0.5881 (12) | 0.0547 (17) | |
H5 | −0.4368 | 0.4782 | −0.6908 | 0.066* | |
C6 | −0.3199 (9) | 0.5359 (2) | −0.5777 (11) | 0.0552 (17) | |
H6 | −0.3734 | 0.5572 | −0.6692 | 0.066* | |
C7 | −0.3207 (8) | 0.4055 (2) | −0.4780 (12) | 0.0526 (17) | |
H7 | −0.3885 | 0.3972 | −0.5946 | 0.063* | |
C8 | −0.2672 (8) | 0.3700 (2) | −0.3556 (11) | 0.0497 (16) | |
H8 | −0.2055 | 0.3772 | −0.2328 | 0.060* | |
C9 | −0.3000 (8) | 0.3208 (2) | −0.4035 (11) | 0.0478 (14) | |
C10 | −0.2331 (7) | 0.2830 (2) | −0.2685 (11) | 0.0400 (13) | |
C11 | −0.1520 (8) | 0.2909 (2) | −0.0730 (10) | 0.0458 (15) | |
H11 | −0.1373 | 0.3216 | −0.0243 | 0.055* | |
C12 | −0.0934 (8) | 0.2536 (2) | 0.0485 (11) | 0.0470 (15) | |
H12 | −0.0376 | 0.2595 | 0.1768 | 0.056* | |
C13 | −0.1165 (8) | 0.2079 (2) | −0.0180 (10) | 0.0430 (14) | |
C14 | −0.2036 (8) | 0.1996 (2) | −0.2123 (9) | 0.0406 (13) | |
C15 | −0.2577 (8) | 0.2362 (2) | −0.3315 (9) | 0.0424 (14) | |
H15 | −0.3132 | 0.2302 | −0.4599 | 0.051* | |
C16 | −0.3006 (10) | 0.1410 (2) | −0.4595 (11) | 0.0587 (18) | |
H16A | −0.3047 | 0.1073 | −0.4757 | 0.088* | |
H16B | −0.2310 | 0.1543 | −0.5708 | 0.088* | |
H16C | −0.4165 | 0.1535 | −0.4673 | 0.088* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.064 (3) | 0.060 (3) | 0.062 (3) | −0.001 (2) | −0.022 (3) | 0.010 (2) |
O2 | 0.082 (4) | 0.045 (3) | 0.072 (3) | 0.005 (2) | −0.019 (3) | −0.001 (3) |
O3 | 0.061 (3) | 0.046 (2) | 0.045 (2) | −0.0050 (19) | −0.012 (2) | 0.007 (2) |
O4 | 0.077 (3) | 0.040 (2) | 0.049 (3) | −0.007 (2) | −0.010 (2) | 0.001 (2) |
C1 | 0.049 (3) | 0.049 (3) | 0.049 (3) | 0.009 (3) | −0.001 (3) | 0.000 (3) |
C2 | 0.053 (4) | 0.055 (4) | 0.051 (4) | 0.007 (3) | −0.013 (3) | 0.002 (3) |
C3 | 0.056 (4) | 0.055 (4) | 0.051 (4) | 0.011 (3) | −0.014 (4) | 0.006 (3) |
C4 | 0.038 (3) | 0.049 (3) | 0.057 (4) | 0.004 (2) | −0.002 (3) | 0.009 (3) |
C5 | 0.051 (4) | 0.056 (4) | 0.057 (4) | 0.001 (3) | −0.019 (3) | 0.008 (3) |
C6 | 0.053 (4) | 0.052 (4) | 0.060 (4) | 0.007 (3) | −0.009 (4) | 0.015 (3) |
C7 | 0.042 (4) | 0.054 (4) | 0.061 (4) | −0.001 (3) | −0.006 (3) | 0.008 (3) |
C8 | 0.046 (3) | 0.049 (4) | 0.054 (4) | −0.002 (3) | −0.005 (3) | 0.007 (3) |
C9 | 0.041 (3) | 0.048 (4) | 0.054 (4) | 0.001 (2) | 0.002 (3) | 0.006 (3) |
C10 | 0.025 (3) | 0.049 (3) | 0.046 (3) | −0.003 (2) | −0.001 (2) | 0.001 (3) |
C11 | 0.042 (3) | 0.042 (3) | 0.053 (4) | 0.001 (2) | −0.004 (3) | −0.003 (3) |
C12 | 0.043 (3) | 0.052 (4) | 0.046 (4) | −0.006 (2) | 0.002 (3) | 0.000 (3) |
C13 | 0.038 (3) | 0.050 (3) | 0.041 (3) | −0.003 (2) | −0.001 (3) | 0.004 (3) |
C14 | 0.038 (3) | 0.043 (3) | 0.041 (3) | −0.005 (2) | 0.002 (3) | 0.003 (2) |
C15 | 0.033 (3) | 0.053 (4) | 0.042 (3) | −0.002 (2) | −0.001 (2) | 0.002 (2) |
C16 | 0.064 (4) | 0.059 (4) | 0.053 (4) | −0.012 (3) | −0.008 (4) | −0.004 (3) |
O1—C9 | 1.256 (8) | C7—C8 | 1.331 (9) |
O2—C1 | 1.351 (7) | C7—H7 | 0.9300 |
O2—H2A | 0.8200 | C8—C9 | 1.449 (9) |
O3—C13 | 1.361 (7) | C8—H8 | 0.9300 |
O3—H3A | 0.8200 | C9—C10 | 1.462 (8) |
O4—C14 | 1.378 (7) | C10—C15 | 1.396 (8) |
O4—C16 | 1.429 (8) | C10—C11 | 1.398 (9) |
C1—C2 | 1.372 (9) | C11—C12 | 1.381 (9) |
C1—C6 | 1.387 (9) | C11—H11 | 0.9300 |
C2—C3 | 1.360 (9) | C12—C13 | 1.371 (8) |
C2—H2 | 0.9300 | C12—H12 | 0.9300 |
C3—C4 | 1.412 (9) | C13—C14 | 1.414 (8) |
C3—H3 | 0.9300 | C14—C15 | 1.348 (8) |
C4—C5 | 1.390 (9) | C15—H15 | 0.9300 |
C4—C7 | 1.459 (8) | C16—H16A | 0.9600 |
C5—C6 | 1.375 (9) | C16—H16B | 0.9600 |
C5—H5 | 0.9300 | C16—H16C | 0.9600 |
C6—H6 | 0.9300 | ||
C1—O2—H2A | 109.5 | O1—C9—C8 | 119.9 (6) |
C13—O3—H3A | 109.5 | O1—C9—C10 | 118.4 (5) |
C14—O4—C16 | 117.2 (5) | C8—C9—C10 | 121.6 (6) |
O2—C1—C2 | 118.0 (6) | C15—C10—C11 | 117.5 (5) |
O2—C1—C6 | 122.4 (6) | C15—C10—C9 | 118.9 (6) |
C2—C1—C6 | 119.6 (6) | C11—C10—C9 | 123.5 (5) |
C3—C2—C1 | 121.3 (6) | C12—C11—C10 | 120.8 (5) |
C3—C2—H2 | 119.3 | C12—C11—H11 | 119.6 |
C1—C2—H2 | 119.3 | C10—C11—H11 | 119.6 |
C2—C3—C4 | 120.7 (6) | C13—C12—C11 | 120.7 (6) |
C2—C3—H3 | 119.6 | C13—C12—H12 | 119.6 |
C4—C3—H3 | 119.6 | C11—C12—H12 | 119.6 |
C5—C4—C3 | 116.7 (6) | O3—C13—C12 | 124.5 (6) |
C5—C4—C7 | 120.5 (6) | O3—C13—C14 | 116.6 (5) |
C3—C4—C7 | 122.6 (5) | C12—C13—C14 | 118.9 (5) |
C6—C5—C4 | 122.5 (6) | C15—C14—O4 | 126.3 (6) |
C6—C5—H5 | 118.7 | C15—C14—C13 | 119.9 (5) |
C4—C5—H5 | 118.7 | O4—C14—C13 | 113.8 (5) |
C5—C6—C1 | 119.0 (6) | C14—C15—C10 | 122.1 (6) |
C5—C6—H6 | 120.5 | C14—C15—H15 | 118.9 |
C1—C6—H6 | 120.5 | C10—C15—H15 | 118.9 |
C8—C7—C4 | 127.7 (7) | O4—C16—H16A | 109.5 |
C8—C7—H7 | 116.1 | O4—C16—H16B | 109.5 |
C4—C7—H7 | 116.1 | H16A—C16—H16B | 109.5 |
C7—C8—C9 | 123.5 (7) | O4—C16—H16C | 109.5 |
C7—C8—H8 | 118.2 | H16A—C16—H16C | 109.5 |
C9—C8—H8 | 118.2 | H16B—C16—H16C | 109.5 |
O2—C1—C2—C3 | −176.8 (6) | O1—C9—C10—C11 | −176.4 (6) |
C6—C1—C2—C3 | 1.0 (10) | C8—C9—C10—C11 | 7.9 (9) |
C1—C2—C3—C4 | 0.3 (10) | C15—C10—C11—C12 | 2.2 (8) |
C2—C3—C4—C5 | −0.6 (10) | C9—C10—C11—C12 | 179.2 (6) |
C2—C3—C4—C7 | 174.4 (7) | C10—C11—C12—C13 | −1.3 (9) |
C3—C4—C5—C6 | −0.4 (10) | C11—C12—C13—O3 | 177.6 (6) |
C7—C4—C5—C6 | −175.5 (7) | C11—C12—C13—C14 | −0.8 (8) |
C4—C5—C6—C1 | 1.7 (10) | C16—O4—C14—C15 | 5.5 (9) |
O2—C1—C6—C5 | 175.8 (7) | C16—O4—C14—C13 | −175.3 (5) |
C2—C1—C6—C5 | −2.0 (10) | O3—C13—C14—C15 | −176.6 (5) |
C5—C4—C7—C8 | −176.8 (6) | C12—C13—C14—C15 | 1.9 (8) |
C3—C4—C7—C8 | 8.5 (11) | O3—C13—C14—O4 | 4.1 (7) |
C4—C7—C8—C9 | −175.9 (6) | C12—C13—C14—O4 | −177.3 (5) |
C7—C8—C9—O1 | 2.0 (10) | O4—C14—C15—C10 | 178.2 (5) |
C7—C8—C9—C10 | 177.6 (6) | C13—C14—C15—C10 | −1.0 (9) |
O1—C9—C10—C15 | 0.5 (9) | C11—C10—C15—C14 | −1.1 (8) |
C8—C9—C10—C15 | −175.2 (5) | C9—C10—C15—C14 | −178.2 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···O3i | 0.82 | 2.59 | 3.060 (6) | 118 |
O2—H2A···O4i | 0.82 | 2.02 | 2.833 (7) | 172 |
O3—H3A···O1ii | 0.82 | 1.87 | 2.618 (7) | 151 |
Symmetry codes: (i) −x−1/2, y+1/2, z−1/2; (ii) x+1/2, −y+1/2, z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···O3i | 0.82 | 2.59 | 3.060 (6) | 118.0 |
O2—H2A···O4i | 0.82 | 2.02 | 2.833 (7) | 172.0 |
O3—H3A···O1ii | 0.82 | 1.87 | 2.618 (7) | 150.6 |
Symmetry codes: (i) −x−1/2, y+1/2, z−1/2; (ii) x+1/2, −y+1/2, z+1. |
Acknowledgements
The authors thank Professor D. Velmurugan, Centre for Advanced Study in Crystallography and Biophysics, University of Madras, for providing data collection and computer facilities.
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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.
Chalcones constitute an important group of natural products due to their unforeseen pharmacological potential. Chemically, they consist of open chain flavanoids in which the two aromatic rings are joined by a three carbon alpha, beta unsaturated carbonyl system. The presence of a reactive alpha, beta unsaturated keto group in chalcones is mainly responsible for their antimicrobial activity (Prasad et al., 2008). In recent years a variety of chalcones have been reviewed for their cytotoxic, anticancer chemopreventive and mutagenic as well as antiviral, insecticidal and enzyme inhibitory properties (Won et al., 2005; Yu et al., 1982). A number of chalcones having hydroxy, alkoxy groups in different position have been reported to possess vasodilatory (Ram et al., 2000), antimitotic (Khatib et al., 2005), antimalarial activities (Papo et al., 2003). The enormous research potentials of these group of compounds motivated us to synthesize the title compound.
The molecular structure of the title compound is shown in Fig. 1. The bond lengths are comparable to literature values (Sathya et al., 2014; Jasinski et al., 2011). The C10—C9—C8 and C8—C7—C4 angles are slightly distorted compared to the values expected in terms of hybridization principles and this may be due to intra- and intermolecular steric interactions. In the crystal, molecules are linked by O—H···O and bifurcated O—H···(O,O) hydrogen bonds forming a three-dimensional network (Fig. 2 and Table 1).