organic compounds
5-(4-Hydroxybenzylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione
aMicroScale Science Institute, Department of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, People's Republic of China
*Correspondence e-mail: wulanzeng@163.com
The title compound, C13H12O5, was prepared by the reaction of 2,2-dimethyl-1,3-dioxane-4,6-dione and 4-hydroxybenzaldehyde in ethanol. The 1,3-dioxane ring is in a distorted boat conformation. In the crystal, inversion dimers linked by pairs of O—H⋯O hydrogen bonds generate R22(20) rings.
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: SMART (Bruker, 1997); cell SAINT (Bruker, 1997); 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: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810032149/hb5605sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810032149/hb5605Isup2.hkl
A mixture of malonic acid (6.24 g, 0.06 mol) and acetic anhydride (9 ml) in strong sulfuric acid (0.25 ml) was stirred with water at 303 K, After dissolving, propan-2-one (3.48 g, 0.06 mol) was added dropwise into solution for 1 h. The reaction was allowed to proceed for 2 h. The mixture was cooled and filtered, and then an ethanol solution of 4-hydroxybenzaldehyde (7.32g, 0.06 mol) was added. The solution was then filtered and concentrated. Yellow blocks of (I) were obtained by evaporation of an petroleum ether-acetone (2:1 v/v) solution of the title compound at room temperature over a period of several days.
The H atoms were placed in calculated positions (C—H = 0.93–0.97 Å), and refined as riding with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(methyl C).
We have recently reported the ═C6 double bond [1.3580 (16)Å] and the phenyl ring via C7-C8 single bond [1.4513 (15)Å], forming the C6-C7-C8 bond angle of 134.33 (10)°. The is stabilized by weak intermolecular O—H···O hydrogen bonds (Table 1).
of 5-(2-fluorobenzylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione (Zeng & Jian 2009). As part of our search for new Meldrum's acid derivatives, the title compound, (I) (Fig. 1), has been synthesized and its structure is reported here. The analysis confirms the title compound with atom C7 bridged by the 1,3-dioxane ring via C7For a related structure, see: Zeng & Jian (2009).
Data collection: SMART (Bruker, 1997); cell
SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of (I), drawn with 30% probability ellipsoids and spheres of arbritrary size for the H atoms. |
C13H12O5 | F(000) = 520 |
Mr = 248.23 | Dx = 1.427 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2644 reflections |
a = 13.900 (3) Å | θ = 3.2–27.5° |
b = 10.249 (2) Å | µ = 0.11 mm−1 |
c = 8.1357 (16) Å | T = 293 K |
β = 94.47 (3)° | Block, yellow |
V = 1155.5 (4) Å3 | 0.20 × 0.16 × 0.11 mm |
Z = 4 |
Bruker SMART CCD diffractometer | 2402 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.035 |
Graphite monochromator | θmax = 27.5°, θmin = 3.2° |
phi and ω scans | h = −17→18 |
10923 measured reflections | k = −13→13 |
2644 independent reflections | l = −10→10 |
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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.116 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0685P)2 + 0.2332P] where P = (Fo2 + 2Fc2)/3 |
2644 reflections | (Δ/σ)max < 0.001 |
163 parameters | Δρmax = 0.25 e Å−3 |
0 restraints | Δρmin = −0.28 e Å−3 |
C13H12O5 | V = 1155.5 (4) Å3 |
Mr = 248.23 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 13.900 (3) Å | µ = 0.11 mm−1 |
b = 10.249 (2) Å | T = 293 K |
c = 8.1357 (16) Å | 0.20 × 0.16 × 0.11 mm |
β = 94.47 (3)° |
Bruker SMART CCD diffractometer | 2402 reflections with I > 2σ(I) |
10923 measured reflections | Rint = 0.035 |
2644 independent reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.116 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.25 e Å−3 |
2644 reflections | Δρmin = −0.28 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 | ||
O4 | 0.41524 (6) | 0.57554 (9) | 0.12495 (11) | 0.0401 (2) | |
O3 | 0.35540 (6) | 0.47383 (10) | 0.35423 (10) | 0.0409 (2) | |
O2 | 0.21646 (6) | 0.52747 (11) | 0.44151 (11) | 0.0468 (3) | |
O5 | −0.22815 (6) | 0.59477 (10) | 0.25091 (12) | 0.0468 (3) | |
H5A | −0.2323 | 0.5600 | 0.3408 | 0.070* | |
C7 | 0.15802 (8) | 0.63304 (11) | 0.10210 (14) | 0.0317 (2) | |
H7A | 0.1617 | 0.6830 | 0.0074 | 0.038* | |
C11 | −0.13455 (8) | 0.59747 (11) | 0.21578 (14) | 0.0316 (2) | |
C8 | 0.05963 (8) | 0.61437 (10) | 0.14540 (13) | 0.0288 (2) | |
C13 | 0.02894 (8) | 0.52087 (11) | 0.25578 (14) | 0.0313 (2) | |
H13A | 0.0739 | 0.4638 | 0.3070 | 0.038* | |
C12 | −0.06604 (8) | 0.51181 (11) | 0.28980 (14) | 0.0320 (3) | |
H12A | −0.0848 | 0.4483 | 0.3625 | 0.038* | |
O1 | 0.32758 (7) | 0.71114 (11) | −0.03290 (14) | 0.0580 (3) | |
C5 | 0.26819 (8) | 0.52924 (12) | 0.32898 (14) | 0.0337 (3) | |
C6 | 0.24587 (8) | 0.59391 (11) | 0.16895 (14) | 0.0318 (2) | |
C9 | −0.01161 (8) | 0.69363 (11) | 0.06446 (14) | 0.0337 (3) | |
H9A | 0.0060 | 0.7520 | −0.0155 | 0.040* | |
C10 | −0.10703 (8) | 0.68732 (11) | 0.10023 (15) | 0.0355 (3) | |
H10A | −0.1525 | 0.7428 | 0.0474 | 0.043* | |
C4 | 0.32958 (9) | 0.63232 (12) | 0.07624 (15) | 0.0373 (3) | |
C3 | 0.41508 (8) | 0.45675 (13) | 0.21746 (14) | 0.0366 (3) | |
C2 | 0.51631 (10) | 0.43795 (19) | 0.29247 (18) | 0.0544 (4) | |
H2A | 0.5351 | 0.5122 | 0.3594 | 0.082* | |
H2B | 0.5593 | 0.4289 | 0.2064 | 0.082* | |
H2C | 0.5192 | 0.3608 | 0.3595 | 0.082* | |
C1 | 0.37811 (12) | 0.34509 (14) | 0.11015 (19) | 0.0525 (4) | |
H1A | 0.3133 | 0.3633 | 0.0669 | 0.079* | |
H1B | 0.3789 | 0.2665 | 0.1744 | 0.079* | |
H1C | 0.4186 | 0.3343 | 0.0207 | 0.079* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O4 | 0.0294 (4) | 0.0477 (5) | 0.0443 (5) | −0.0016 (3) | 0.0091 (3) | 0.0076 (4) |
O3 | 0.0317 (4) | 0.0625 (6) | 0.0287 (4) | 0.0045 (4) | 0.0036 (3) | 0.0062 (4) |
O2 | 0.0318 (4) | 0.0783 (7) | 0.0309 (4) | −0.0035 (4) | 0.0067 (3) | 0.0073 (4) |
O5 | 0.0273 (4) | 0.0666 (6) | 0.0468 (5) | 0.0088 (4) | 0.0051 (4) | 0.0100 (5) |
C7 | 0.0339 (6) | 0.0314 (5) | 0.0302 (5) | −0.0014 (4) | 0.0052 (4) | 0.0013 (4) |
C11 | 0.0270 (5) | 0.0372 (6) | 0.0303 (5) | 0.0024 (4) | 0.0003 (4) | −0.0045 (4) |
C8 | 0.0290 (5) | 0.0293 (5) | 0.0281 (5) | −0.0001 (4) | 0.0015 (4) | −0.0026 (4) |
C13 | 0.0286 (5) | 0.0316 (5) | 0.0334 (5) | 0.0038 (4) | 0.0007 (4) | 0.0037 (4) |
C12 | 0.0310 (5) | 0.0352 (5) | 0.0299 (5) | 0.0005 (4) | 0.0026 (4) | 0.0039 (4) |
O1 | 0.0496 (6) | 0.0612 (6) | 0.0660 (7) | 0.0073 (5) | 0.0224 (5) | 0.0309 (5) |
C5 | 0.0273 (5) | 0.0443 (6) | 0.0294 (5) | −0.0052 (4) | 0.0025 (4) | 0.0005 (4) |
C6 | 0.0298 (5) | 0.0360 (5) | 0.0301 (5) | −0.0023 (4) | 0.0063 (4) | 0.0010 (4) |
C9 | 0.0365 (6) | 0.0311 (5) | 0.0327 (5) | −0.0015 (4) | −0.0015 (4) | 0.0038 (4) |
C10 | 0.0334 (6) | 0.0347 (6) | 0.0373 (6) | 0.0052 (4) | −0.0047 (4) | 0.0032 (5) |
C4 | 0.0332 (6) | 0.0393 (6) | 0.0406 (6) | −0.0009 (4) | 0.0100 (5) | 0.0050 (5) |
C3 | 0.0326 (6) | 0.0481 (7) | 0.0297 (5) | 0.0031 (5) | 0.0051 (4) | 0.0032 (5) |
C2 | 0.0337 (6) | 0.0894 (11) | 0.0402 (7) | 0.0138 (7) | 0.0031 (5) | 0.0039 (7) |
C1 | 0.0594 (9) | 0.0470 (8) | 0.0511 (8) | −0.0002 (6) | 0.0036 (7) | −0.0049 (6) |
O4—C4 | 1.3564 (15) | C12—H12A | 0.9300 |
O4—C3 | 1.4314 (15) | O1—C4 | 1.1991 (15) |
O3—C5 | 1.3399 (15) | C5—C6 | 1.4722 (16) |
O3—C3 | 1.4493 (14) | C6—C4 | 1.4882 (16) |
O2—C5 | 1.2076 (15) | C9—C10 | 1.3814 (17) |
O5—C11 | 1.3539 (14) | C9—H9A | 0.9300 |
O5—H5A | 0.8200 | C10—H10A | 0.9300 |
C7—C6 | 1.3580 (16) | C3—C2 | 1.5019 (17) |
C7—C8 | 1.4513 (15) | C3—C1 | 1.5053 (19) |
C7—H7A | 0.9300 | C2—H2A | 0.9600 |
C11—C10 | 1.3907 (17) | C2—H2B | 0.9600 |
C11—C12 | 1.3968 (16) | C2—H2C | 0.9600 |
C8—C13 | 1.4023 (15) | C1—H1A | 0.9600 |
C8—C9 | 1.4044 (15) | C1—H1B | 0.9600 |
C13—C12 | 1.3730 (16) | C1—H1C | 0.9600 |
C13—H13A | 0.9300 | ||
C4—O4—C3 | 118.76 (9) | C8—C9—H9A | 119.1 |
C5—O3—C3 | 119.91 (9) | C9—C10—C11 | 119.52 (10) |
C11—O5—H5A | 109.5 | C9—C10—H10A | 120.2 |
C6—C7—C8 | 134.33 (10) | C11—C10—H10A | 120.2 |
C6—C7—H7A | 112.8 | O1—C4—O4 | 118.33 (11) |
C8—C7—H7A | 112.8 | O1—C4—C6 | 125.42 (12) |
O5—C11—C10 | 118.41 (10) | O4—C4—C6 | 116.21 (10) |
O5—C11—C12 | 122.02 (11) | O4—C3—O3 | 108.99 (10) |
C10—C11—C12 | 119.56 (10) | O4—C3—C2 | 106.43 (11) |
C13—C8—C9 | 117.19 (10) | O3—C3—C2 | 106.12 (10) |
C13—C8—C7 | 125.81 (10) | O4—C3—C1 | 110.86 (10) |
C9—C8—C7 | 116.95 (10) | O3—C3—C1 | 110.31 (11) |
C12—C13—C8 | 121.38 (10) | C2—C3—C1 | 113.88 (13) |
C12—C13—H13A | 119.3 | C3—C2—H2A | 109.5 |
C8—C13—H13A | 119.3 | C3—C2—H2B | 109.5 |
C13—C12—C11 | 120.30 (10) | H2A—C2—H2B | 109.5 |
C13—C12—H12A | 119.9 | C3—C2—H2C | 109.5 |
C11—C12—H12A | 119.9 | H2A—C2—H2C | 109.5 |
O2—C5—O3 | 117.55 (11) | H2B—C2—H2C | 109.5 |
O2—C5—C6 | 125.47 (11) | C3—C1—H1A | 109.5 |
O3—C5—C6 | 116.88 (10) | C3—C1—H1B | 109.5 |
C7—C6—C5 | 127.45 (10) | H1A—C1—H1B | 109.5 |
C7—C6—C4 | 115.66 (10) | C3—C1—H1C | 109.5 |
C5—C6—C4 | 116.62 (10) | H1A—C1—H1C | 109.5 |
C10—C9—C8 | 121.84 (10) | H1B—C1—H1C | 109.5 |
C10—C9—H9A | 119.1 |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···O2i | 0.82 | 1.98 | 2.7919 (14) | 170 |
Symmetry code: (i) −x, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C13H12O5 |
Mr | 248.23 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 13.900 (3), 10.249 (2), 8.1357 (16) |
β (°) | 94.47 (3) |
V (Å3) | 1155.5 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.20 × 0.16 × 0.11 |
Data collection | |
Diffractometer | Bruker SMART CCD |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10923, 2644, 2402 |
Rint | 0.035 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.116, 1.05 |
No. of reflections | 2644 |
No. of parameters | 163 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.25, −0.28 |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···O2i | 0.82 | 1.98 | 2.7919 (14) | 170 |
Symmetry code: (i) −x, −y+1, −z+1. |
References
Bruker (1997). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Zeng, W.-L. & Jian, F.-F. (2009). Acta Cryst. E65, o2587. Web of Science CSD CrossRef IUCr Journals Google Scholar
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We have recently reported the crystal structure of 5-(2-fluorobenzylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione (Zeng & Jian 2009). As part of our search for new Meldrum's acid derivatives, the title compound, (I) (Fig. 1), has been synthesized and its structure is reported here. The crystal structure analysis confirms the title compound with atom C7 bridged by the 1,3-dioxane ring via C7═C6 double bond [1.3580 (16)Å] and the phenyl ring via C7-C8 single bond [1.4513 (15)Å], forming the C6-C7-C8 bond angle of 134.33 (10)°. The crystal structure is stabilized by weak intermolecular O—H···O hydrogen bonds (Table 1).