organic compounds
1-(3-tert-Butyl-4-hydroxyphenyl)ethanone
aSchool of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China, and bTianjin Key Laboratory of Molecular Design and Drug Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, People's Republic of China
*Correspondence e-mail: yugp2005@yahoo.com.cn
The title compound, C12H16O2, is approximately planar (r.m.s. deviation = 0.030 Å), apart from two methyl groups of the tert-butyl unit [deviations of the C atoms = 1.140 (2) and −1.367 (1) Å]. In the crystal, intermolecular O—H⋯O hydrogen bonds link the molecules into hexameric rings with R66(48) graph-set motifs.
Related literature
For details of the biological activity of the PAR-1 antagonist, see: Chackalamannil (2006); Shimomura et al. (2006). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810027339/hb5546sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810027339/hb5546Isup2.hkl
A dried 500-ml round-bottomed flask was charged with 21.33 g (0.160 mol, 1.2 eq) of anhydrous aluminium chloride and 400 ml of dried toluene, and the resulting yellow slurry was stirred and cooled to -35°C followed by dropwise addition of 20.0 g (0.133 mol, 1.0 eq) of 2-(tert-butyl)phenol dissolved in 20 ml of dried toluene. To the yellow clear solution obtained above was added dropwise 12.56 g (0.160 mol, 1.2 eq) of acetyl chloride dissolved in 20 ml of dried toluene, and after addition the resulting mixture (a yellow clear solution) was stirred at this temperature until all the starting material was consumed almost completely as indicated by TLC analysis (typical 2–3 h). The reaction mixture was slowly poured into 500 ml of stirred ice-water with great care, and the resulting mixture was stirred. The organic phase was separated and the aqueous phase was exacted with three 100-ml portions of ethyl acetate. The combined exacts were washed with brine to pH = 7, dried over sodium sulfate and evaporated on a rotary evaporator to afford the crude product as colorless crystals, which was triturated with ethyl acetate/petroleum ether (1/30) to afford the pure product as colorless crystals. Colourless blocks of (I) were obtained via slow evaporation at room temperature of a solution of the pure title compound in ethyl acetate/petroleum ether (1/30).
All H atoms were found on difference maps, with C—H = 0.95 or 0.98 and O—H = 0.84 Å and included in the final cycles of
using a riding model, with Uiso(H) = 1.2Ueq(C) for aryl H atoms and 1.5Ueq(C, O) for the methyl and hydroxy H atoms.PAR-1 antagonist is a kind of new anti-platelet agents in the antithrombotic area for the treat of artery coronary syndrome (Chackalamannil, 2006). The title compound is prepared when the well established PAR-1 antagonist E-5555 was synthesized as positive control during the development of our own PAR-1 antagonists (Shimomura et al., 2006).
In title compound, C12H16O2, bond lengths are normal ((Allen et al., 1987)). Intermolecular interactions O—H···O hydrogen bonds link the moleculars into hexamer.
For details of the biological activity of the PAR-1 antagonist, see: Chackalamannil (2006); Shimomura et al. (2006). For bond-length data, see: Allen et al. (1987).
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. View of (I), with displacement ellipsoids drawn at the 40% probability level. | |
Fig. 2. View of the hexameric ring in the crystal of (I). |
C12H16O2 | Dx = 1.150 Mg m−3 |
Mr = 192.25 | Mo Kα radiation, λ = 0.71073 Å |
Trigonal, R3 | Cell parameters from 5019 reflections |
Hall symbol: -R 3 | θ = 2.3–27.9° |
a = 24.019 (3) Å | µ = 0.08 mm−1 |
c = 9.999 (2) Å | T = 113 K |
V = 4995.8 (14) Å3 | Block, colorless |
Z = 18 | 0.20 × 0.18 × 0.14 mm |
F(000) = 1872 |
Rigaku Saturn CCD diffractometer | 1950 independent reflections |
Radiation source: rotating anode | 1733 reflections with I > 2σ(I) |
Confocal monochromator | Rint = 0.034 |
Detector resolution: 7.31 pixels mm-1 | θmax = 25.0°, θmin = 1.7° |
ω and φ scans | h = −21→28 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −28→28 |
Tmin = 0.985, Tmax = 0.989 | l = −11→11 |
12180 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.039 | H-atom parameters constrained |
wR(F2) = 0.110 | w = 1/[σ2(Fo2) + (0.0723P)2 + 1.6812P] where P = (Fo2 + 2Fc2)/3 |
S = 1.03 | (Δ/σ)max = 0.002 |
1950 reflections | Δρmax = 0.24 e Å−3 |
133 parameters | Δρmin = −0.18 e Å−3 |
0 restraints | Extinction correction: SHELXTL (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0080 (7) |
C12H16O2 | Z = 18 |
Mr = 192.25 | Mo Kα radiation |
Trigonal, R3 | µ = 0.08 mm−1 |
a = 24.019 (3) Å | T = 113 K |
c = 9.999 (2) Å | 0.20 × 0.18 × 0.14 mm |
V = 4995.8 (14) Å3 |
Rigaku Saturn CCD diffractometer | 1950 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 1733 reflections with I > 2σ(I) |
Tmin = 0.985, Tmax = 0.989 | Rint = 0.034 |
12180 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 0 restraints |
wR(F2) = 0.110 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.24 e Å−3 |
1950 reflections | Δρmin = −0.18 e Å−3 |
133 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 | ||
O1 | 0.57494 (4) | 0.80946 (4) | 0.95585 (9) | 0.0304 (3) | |
H1 | 0.6049 | 0.8470 | 0.9716 | 0.046* | |
O2 | 0.72860 (4) | 0.66048 (4) | 0.99295 (9) | 0.0296 (3) | |
C1 | 0.59747 (6) | 0.76811 (5) | 0.96507 (12) | 0.0230 (3) | |
C2 | 0.66314 (6) | 0.79128 (5) | 0.98477 (12) | 0.0248 (3) | |
H2 | 0.6918 | 0.8362 | 0.9924 | 0.030* | |
C3 | 0.68665 (6) | 0.74960 (6) | 0.99315 (11) | 0.0241 (3) | |
H3 | 0.7315 | 0.7658 | 1.0036 | 0.029* | |
C4 | 0.64445 (5) | 0.68348 (5) | 0.98621 (11) | 0.0215 (3) | |
C5 | 0.57896 (5) | 0.66128 (5) | 0.96739 (11) | 0.0214 (3) | |
H5 | 0.5504 | 0.6162 | 0.9639 | 0.026* | |
C6 | 0.55354 (5) | 0.70158 (5) | 0.95352 (11) | 0.0213 (3) | |
C7 | 0.48199 (6) | 0.67589 (6) | 0.92360 (13) | 0.0272 (3) | |
C8 | 0.45154 (6) | 0.69730 (7) | 1.03216 (15) | 0.0386 (4) | |
H8A | 0.4588 | 0.6840 | 1.1201 | 0.058* | |
H8B | 0.4052 | 0.6773 | 1.0159 | 0.058* | |
H8C | 0.4711 | 0.7442 | 1.0299 | 0.058* | |
C9 | 0.47547 (7) | 0.70091 (7) | 0.78650 (14) | 0.0395 (4) | |
H9A | 0.4980 | 0.7480 | 0.7879 | 0.059* | |
H9B | 0.4299 | 0.6843 | 0.7666 | 0.059* | |
H9C | 0.4943 | 0.6864 | 0.7175 | 0.059* | |
C10 | 0.44439 (6) | 0.60217 (6) | 0.91906 (15) | 0.0373 (4) | |
H10A | 0.4622 | 0.5871 | 0.8489 | 0.056* | |
H10B | 0.3991 | 0.5872 | 0.8997 | 0.056* | |
H10C | 0.4479 | 0.5851 | 1.0057 | 0.056* | |
C11 | 0.67018 (6) | 0.63918 (6) | 0.99456 (11) | 0.0236 (3) | |
C12 | 0.62460 (6) | 0.56802 (6) | 1.00527 (13) | 0.0297 (3) | |
H12A | 0.6491 | 0.5459 | 1.0191 | 0.045* | |
H12B | 0.5995 | 0.5524 | 0.9227 | 0.045* | |
H12C | 0.5955 | 0.5593 | 1.0811 | 0.045* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0294 (5) | 0.0171 (4) | 0.0472 (6) | 0.0134 (4) | −0.0021 (4) | 0.0000 (4) |
O2 | 0.0260 (5) | 0.0321 (5) | 0.0356 (5) | 0.0182 (4) | −0.0016 (4) | 0.0001 (4) |
C1 | 0.0287 (7) | 0.0206 (6) | 0.0224 (6) | 0.0144 (5) | 0.0003 (5) | 0.0014 (5) |
C2 | 0.0263 (6) | 0.0177 (6) | 0.0270 (6) | 0.0083 (5) | −0.0023 (5) | −0.0010 (5) |
C3 | 0.0223 (6) | 0.0261 (6) | 0.0230 (6) | 0.0113 (5) | −0.0026 (5) | −0.0003 (5) |
C4 | 0.0251 (6) | 0.0224 (6) | 0.0186 (6) | 0.0131 (5) | −0.0005 (4) | 0.0003 (4) |
C5 | 0.0249 (6) | 0.0184 (6) | 0.0210 (6) | 0.0109 (5) | 0.0003 (5) | 0.0004 (4) |
C6 | 0.0240 (6) | 0.0200 (6) | 0.0204 (6) | 0.0115 (5) | 0.0008 (5) | 0.0002 (4) |
C7 | 0.0230 (6) | 0.0218 (6) | 0.0385 (7) | 0.0126 (5) | −0.0013 (5) | −0.0007 (5) |
C8 | 0.0294 (7) | 0.0303 (7) | 0.0577 (9) | 0.0163 (6) | 0.0115 (6) | 0.0026 (6) |
C9 | 0.0362 (8) | 0.0395 (8) | 0.0461 (8) | 0.0215 (7) | −0.0152 (6) | −0.0038 (6) |
C10 | 0.0220 (7) | 0.0252 (7) | 0.0626 (9) | 0.0102 (6) | −0.0031 (6) | −0.0050 (6) |
C11 | 0.0271 (7) | 0.0288 (7) | 0.0188 (6) | 0.0169 (5) | −0.0015 (5) | −0.0003 (5) |
C12 | 0.0310 (7) | 0.0257 (7) | 0.0385 (7) | 0.0188 (6) | −0.0017 (5) | 0.0013 (5) |
O1—C1 | 1.3512 (14) | C7—C10 | 1.5343 (17) |
O1—H1 | 0.8400 | C7—C9 | 1.5359 (19) |
O2—C11 | 1.2299 (14) | C8—H8A | 0.9800 |
C1—C2 | 1.3995 (17) | C8—H8B | 0.9800 |
C1—C6 | 1.4121 (16) | C8—H8C | 0.9800 |
C2—C3 | 1.3761 (17) | C9—H9A | 0.9800 |
C2—H2 | 0.9500 | C9—H9B | 0.9800 |
C3—C4 | 1.3944 (17) | C9—H9C | 0.9800 |
C3—H3 | 0.9500 | C10—H10A | 0.9800 |
C4—C5 | 1.3983 (16) | C10—H10B | 0.9800 |
C4—C11 | 1.4762 (16) | C10—H10C | 0.9800 |
C5—C6 | 1.3857 (16) | C11—C12 | 1.5034 (17) |
C5—H5 | 0.9500 | C12—H12A | 0.9800 |
C6—C7 | 1.5372 (16) | C12—H12B | 0.9800 |
C7—C8 | 1.5342 (18) | C12—H12C | 0.9800 |
C1—O1—H1 | 109.5 | C7—C8—H8B | 109.5 |
O1—C1—C2 | 120.22 (10) | H8A—C8—H8B | 109.5 |
O1—C1—C6 | 118.61 (10) | C7—C8—H8C | 109.5 |
C2—C1—C6 | 121.16 (10) | H8A—C8—H8C | 109.5 |
C3—C2—C1 | 120.68 (10) | H8B—C8—H8C | 109.5 |
C3—C2—H2 | 119.7 | C7—C9—H9A | 109.5 |
C1—C2—H2 | 119.7 | C7—C9—H9B | 109.5 |
C2—C3—C4 | 119.76 (10) | H9A—C9—H9B | 109.5 |
C2—C3—H3 | 120.1 | C7—C9—H9C | 109.5 |
C4—C3—H3 | 120.1 | H9A—C9—H9C | 109.5 |
C3—C4—C5 | 118.66 (10) | H9B—C9—H9C | 109.5 |
C3—C4—C11 | 119.35 (10) | C7—C10—H10A | 109.5 |
C5—C4—C11 | 121.96 (10) | C7—C10—H10B | 109.5 |
C6—C5—C4 | 123.49 (10) | H10A—C10—H10B | 109.5 |
C6—C5—H5 | 118.3 | C7—C10—H10C | 109.5 |
C4—C5—H5 | 118.3 | H10A—C10—H10C | 109.5 |
C5—C6—C1 | 116.18 (10) | H10B—C10—H10C | 109.5 |
C5—C6—C7 | 122.26 (10) | O2—C11—C4 | 120.07 (11) |
C1—C6—C7 | 121.54 (10) | O2—C11—C12 | 120.31 (10) |
C8—C7—C10 | 107.67 (10) | C4—C11—C12 | 119.62 (10) |
C8—C7—C9 | 109.96 (11) | C11—C12—H12A | 109.5 |
C10—C7—C9 | 107.98 (11) | C11—C12—H12B | 109.5 |
C8—C7—C6 | 110.64 (10) | H12A—C12—H12B | 109.5 |
C10—C7—C6 | 111.33 (10) | C11—C12—H12C | 109.5 |
C9—C7—C6 | 109.21 (10) | H12A—C12—H12C | 109.5 |
C7—C8—H8A | 109.5 | H12B—C12—H12C | 109.5 |
O1—C1—C2—C3 | −179.44 (11) | C2—C1—C6—C7 | −176.33 (11) |
C6—C1—C2—C3 | 0.13 (18) | C5—C6—C7—C8 | 122.54 (12) |
C1—C2—C3—C4 | −2.04 (18) | C1—C6—C7—C8 | −59.10 (15) |
C2—C3—C4—C5 | 1.59 (17) | C5—C6—C7—C10 | 2.85 (16) |
C2—C3—C4—C11 | 179.67 (10) | C1—C6—C7—C10 | −178.79 (11) |
C3—C4—C5—C6 | 0.82 (18) | C5—C6—C7—C9 | −116.30 (12) |
C11—C4—C5—C6 | −177.21 (10) | C1—C6—C7—C9 | 62.07 (14) |
C4—C5—C6—C1 | −2.62 (17) | C3—C4—C11—O2 | −7.86 (17) |
C4—C5—C6—C7 | 175.82 (11) | C5—C4—C11—O2 | 170.15 (11) |
O1—C1—C6—C5 | −178.30 (10) | C3—C4—C11—C12 | 172.03 (10) |
C2—C1—C6—C5 | 2.13 (17) | C5—C4—C11—C12 | −9.95 (17) |
O1—C1—C6—C7 | 3.25 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2i | 0.84 | 1.83 | 2.6624 (12) | 171 |
Symmetry code: (i) y, −x+y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C12H16O2 |
Mr | 192.25 |
Crystal system, space group | Trigonal, R3 |
Temperature (K) | 113 |
a, c (Å) | 24.019 (3), 9.999 (2) |
V (Å3) | 4995.8 (14) |
Z | 18 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.20 × 0.18 × 0.14 |
Data collection | |
Diffractometer | Rigaku Saturn CCD |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.985, 0.989 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12180, 1950, 1733 |
Rint | 0.034 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.110, 1.03 |
No. of reflections | 1950 |
No. of parameters | 133 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.24, −0.18 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2i | 0.84 | 1.83 | 2.6624 (12) | 171 |
Symmetry code: (i) y, −x+y+1, −z+2. |
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. CSD CrossRef Web of Science Google Scholar
Chackalamannil, S. (2006). J. Med. Chem. 49, 5389–5403. Web of Science CrossRef PubMed CAS Google Scholar
Rigaku. (2005). CrystalClear. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Shimomura, N., Sasho, M., Kayano, A., Yoshizawa, K., Tsujii, M., Kuroda, H. & Furukawa, K. (2006). US Patent 20060058370. Google Scholar
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PAR-1 antagonist is a kind of new anti-platelet agents in the antithrombotic area for the treat of artery coronary syndrome (Chackalamannil, 2006). The title compound is prepared when the well established PAR-1 antagonist E-5555 was synthesized as positive control during the development of our own PAR-1 antagonists (Shimomura et al., 2006).
In title compound, C12H16O2, bond lengths are normal ((Allen et al., 1987)). Intermolecular interactions O—H···O hydrogen bonds link the moleculars into hexamer.