(2E,6E)-2,6-Bis(2-fluoro-5-meth­oxy­benzyl­idene)cyclo­hexan-1-one

Chen, L.; Zhang, L.; Wang, Z.; Wu, Y.; Liang, G.

doi:10.1107/S1600536810048610

organic compounds

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 66| Part 12| December 2010| Page o3309

https://doi.org/10.1107/S1600536810048610

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(2E,6E)-2,6-Bis(2-fluoro-5-methoxybenzylidene)cyclohexan-1-one

Linfeng Chen,^a Li Zhang,^a Zhe Wang,^a Yunjie Wu ^a and Guang Liang ^a ^*

^aSchool of Pharmacy, Wenzhou Medical College, Wenzhou, Zhejiang Province 325035, People's Republic of China
^*Correspondence e-mail: wzmcliangguang@163.com

(Received 8 November 2010; accepted 22 November 2010; online 27 November 2010)

The title compound, C₂₂H₂₀F₂O₃, a derivative of curcumin, crystallized with two independent molecules in the asymmetric unit. The mean planes of the two 2-fluoro-5-methoxyphenyl groups are aligned at 24.88 (11)° in one molecule and 24.19 (15)° in the other. The dihedral angles between the mean plane of the penta-1,4-dien-3-one group and those of the two 2-fluoro-5-methoxyphenyl rings are 51.16 (11) and 49.16 (10)° in the first molecule, and 45.69 (15) and 54.00 (14)° in the second. The molecules adopt E configurations about the central olefinic bonds.

Related literature

For related structures, see: Liang et al. (2007 ); Zhao et al. (2009 ); Zhao, Yang, Liang et al. (2010 ). For background to and applications of related compounds, see: Aggarwal et al. (2003 ); Began et al. (1999 ); Ganesh & Aggarwal (2007); Liang et al.(2009 ); Zhao, Yang, Wang et al. (2010 ).

Experimental

Crystal data

C₂₂H₂₀F₂O₃
M_r = 370.38
Triclinic, $[P \overline 1]$
a = 9.2334 (10) Å
b = 9.7601 (11) Å
c = 21.433 (2) Å
α = 90.195 (2)°
β = 100.568 (2)°
γ = 92.934 (2)°
V = 1896.1 (4) Å³
Z = 4
Mo Kα radiation
μ = 0.10 mm⁻¹
T = 273 K
0.10 × 0.10 × 0.10 mm

Data collection

Bruker APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2004 ) T_min = 0.990, T_max = 0.990
10069 measured reflections
6634 independent reflections
3949 reflections with I > 2σ(I)
R_int = 0.101

Refinement

R[F² > 2σ(F²)] = 0.057
wR(F²) = 0.147
S = 1.00
6634 reflections
492 parameters
H-atom parameters not refined
Δρ_max = 0.26 e Å⁻³
Δρ_min = −0.27 e Å⁻³

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); 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

Crystal structure: contains datablocks I, global. DOI: https://doi.org/10.1107/S1600536810048610/ng5065sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810048610/ng5065Isup2.hkl

checkCIF report

Comment top

The title compound, (2E,6E)-2,6-bis(2-fluoro-5-hydroxybenzylidene)cyclohexanone (I), is one of mono-carbonyl analogues of curcumin designed and synthesized by our group.Curcumin reportedly possesses several pharmacological properties including anti-inflammatory, antimicrobial,antiviral, antifungal, antioxidant, chemosensitizing, radiosensitizing,and wound healing activities.Curcumin can suppress tumor initiation, promotion, and metastasis in experimental models. (Began, et al.1999;Ganesh et al.2007).Unlike most chemotherapeutic agents, curcumin has been reported to show almost nontoxicity. These compound have attracted more and more attention. (Aggarwal et al.2003). The need for curcumin-like compounds with improved bioavailability characteristics has led to the chemical synthesis of a series of analogues, using curcumin as the primary structure. In our previous study, a series of fluorine-containing, mono-carbonyl analogues of curcumin were designed and synthesized by the deletion of β-diketone moiety, and their bioactivities were evaluated (Liang et al., 2009; Zhao et al., 2010). Among those compounds, the cyclohexanone-containing analogues exhibited better anti-tumor properties and a wider anti-tumor spectrum than acetone- and cyclopentanone-containing analogues. As a continuation of our broad program of work on the synthesis and structural study of chalcones, the title chalcone derivative has been obtained and an X-ray diffraction study was carried out. Therefore, the structure of one of cyclohexanone-containing compounds (I), was further determined and analyzed using single-crystal X-ray diffraction. Accumulation of detailed structural and pharmacological data facilitated the explanation of the observed structure–activity relationships and modeling of new compounds with potential biological activity.

In this paper, we report the molecular and crystal structures of fluorine-containing, mono-carbonyl analogues of curcumin, (I). The molecule (I), consists of three ring systems, i.e., one cyclohexanone ring and two aryl rings. The central cyclohexanone ring has a distorted chair conformation, and molecular structures have an E-configuration towards the central olefinic bonds, exhibiting a butterfly-shaped geometry. The dihedral angle between the two terminal phenyl rings is 27.19 (13)°, and the two phenyl rings are twisted out of the plane of the central cyclohexanone on the two sides, respectively. Among these derivatives, some of them were reported of their crystal structures ( Liang et al., 2007; Zhao et al., 2009; Zhao et al., 2010).

Related literature top

For related structures, see: Liang et al. (2007); Zhao et al. (2009); Zhao, Yang, Liang et al. 2010). For background to and applications of related compounds, see: Aggarwal et al. (2003); Began et al. (1999); Ganesh et al. (2007); Liang et al.(2009); Zhao, Yang, Wang et al. (2010).

Experimental top

Cyclohexanone (7.5 mmol) was dissolved in ethanol (5 ml) and crushed KOH (15 mmol) was added. The flask was immersed in a bath of crushed ice and a solution of 2-fluoro-5-hydroxybenzaldehyde (15 mmol) in ethanol (5 mmol) was added. The reaction mixture was stirred at 300 K and completion of the reaction was monitored by thin-layer chromatography. Ice-cold water was added to the reaction mixture after 48 h and the yellow solid that separated was filtered off, washed with water and cold ethanol, dried and purified by column chromatography on silica gel (yield: 58.3%). Single crystals of the title compound were grown in a CH₂Cl₂/CH₃OH mixture (5:2 v/v) by slow evaporation (mp 91.3-93.4 °C).

Yellow powder, 58.3% yield, mp 91.3-93.4°C. ¹H-NMR (CDCl₃) δ: 7.77 (2H, s, Ar-CH=C×2), 7.03 (2H, t, J=9.0Hz, Ar-H³×2), 6.83-6.87 (4H, m, Ar-H^4,6×2), 3.80 (6H, s, Ar-OCH₃×2), 2.81 (4H, t, J=5.4Hz, CH₂-C-CH₂), 1.78 (2H, m, >CH₂). ESI-MS m/z: 371.0 (M+H)⁺, calcd for C₂₂H₂₀F₂O₃: 370.39.

Structure description top

Computing details top

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); 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).

Figures top

Fig. 1. The molecular structure of the title compound, showing 30% displacement ellipsoids for the non-hydrogen atoms. Hydrogen atoms are drawn as spheres of arbitrary radius.

(2E,6E)-2,6-Bis(2-fluoro-5-methoxybenzylidene)cyclohexan-1-one top

Crystal data top

C₂₂H₂₀F₂O₃	Z = 4
M_r = 370.38	F(000) = 776
Triclinic, P1	D_x = 1.297 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 9.2334 (10) Å	Cell parameters from 3025 reflections
b = 9.7601 (11) Å	θ = 2.3–23.1°
c = 21.433 (2) Å	µ = 0.10 mm⁻¹
α = 90.195 (2)°	T = 273 K
β = 100.568 (2)°	Block, colorless
γ = 92.934 (2)°	0.10 × 0.10 × 0.10 mm
V = 1896.1 (4) Å³

Data collection top

Bruker APEXII CCD area-detector diffractometer	6634 independent reflections
Radiation source: fine-focus sealed tube	3949 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.101
φ and ω scans	θ_max = 25.0°, θ_min = 1.9°
Absorption correction: multi-scan (SADABS; Bruker, 2004)	h = −10→10
T_min = 0.990, T_max = 0.990	k = −11→11
10069 measured reflections	l = −18→25

Refinement top

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)] = 0.057	H-atom parameters not refined
wR(F²) = 0.147	w = 1/[σ²(F_o²) + (0.055P)²] where P = (F_o² + 2F_c²)/3
S = 1.00	(Δ/σ)_max = 0.015
6634 reflections	Δρ_max = 0.26 e Å⁻³
492 parameters	Δρ_min = −0.27 e Å⁻³
0 restraints	Extinction correction: SHELXL97 (Sheldrick, 2008), Fc^*=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4
Primary atom site location: structure-invariant direct methods	Extinction coefficient: 0.0102 (12)

Crystal data top

C₂₂H₂₀F₂O₃	γ = 92.934 (2)°
M_r = 370.38	V = 1896.1 (4) Å³
Triclinic, P1	Z = 4
a = 9.2334 (10) Å	Mo Kα radiation
b = 9.7601 (11) Å	µ = 0.10 mm⁻¹
c = 21.433 (2) Å	T = 273 K
α = 90.195 (2)°	0.10 × 0.10 × 0.10 mm
β = 100.568 (2)°

Data collection top

Bruker APEXII CCD area-detector diffractometer	6634 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2004)	3949 reflections with I > 2σ(I)
T_min = 0.990, T_max = 0.990	R_int = 0.101
10069 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.057	0 restraints
wR(F²) = 0.147	H-atom parameters not refined
S = 1.00	Δρ_max = 0.26 e Å⁻³
6634 reflections	Δρ_min = −0.27 e Å⁻³
492 parameters

Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
F1	0.64586 (15)	−0.51316 (13)	0.03944 (7)	0.0840 (4)
O1	0.59989 (17)	−0.11281 (16)	−0.08404 (7)	0.0687 (4)
O4	0.94423 (17)	0.60048 (16)	−0.09902 (8)	0.0769 (5)
F2	0.94845 (17)	0.08313 (16)	−0.19582 (7)	0.0938 (5)
C5	0.7533 (2)	0.0813 (2)	−0.04416 (10)	0.0525 (5)
C6	0.6674 (2)	−0.0492 (2)	−0.03706 (10)	0.0521 (5)
C7	0.9400 (2)	0.4676 (2)	−0.12065 (11)	0.0602 (6)
C8	0.5428 (2)	−0.2508 (2)	0.13952 (10)	0.0577 (6)
H8	0.5357	−0.1562	0.1412	0.069*
C9	0.6657 (2)	−0.1030 (2)	0.02818 (10)	0.0513 (5)
C10	0.8601 (2)	0.3605 (2)	−0.09952 (10)	0.0585 (6)
H10	0.8033	0.3770	−0.0689	0.070*
O3	0.4590 (2)	−0.25806 (18)	0.23530 (8)	0.0859 (5)
C12	0.9460 (3)	0.2116 (2)	−0.17015 (11)	0.0666 (6)
C13	0.6103 (2)	−0.2322 (2)	0.03145 (10)	0.0561 (5)
H13	0.5820	−0.2785	−0.0072	0.067*
C14	0.5881 (2)	−0.3100 (2)	0.08760 (10)	0.0541 (5)
C15	0.7815 (2)	0.1087 (2)	−0.10238 (11)	0.0593 (6)
H15	0.7441	0.0433	−0.1336	0.071*
C16	0.6001 (2)	−0.4513 (2)	0.08892 (11)	0.0631 (6)
C17	0.8626 (2)	0.2266 (2)	−0.12325 (10)	0.0576 (6)
C18	0.7318 (2)	−0.0142 (2)	0.08455 (10)	0.0603 (6)
H18A	0.7671	−0.0722	0.1202	0.072*
H18B	0.6561	0.0409	0.0961	0.072*
C19	0.5085 (2)	−0.3297 (2)	0.18834 (11)	0.0633 (6)
C20	0.5209 (3)	−0.4707 (3)	0.18760 (12)	0.0742 (7)
H20	0.4980	−0.5238	0.2208	0.089*
C21	0.8076 (3)	0.1678 (2)	0.01397 (10)	0.0664 (6)
H21A	0.7292	0.2237	0.0222	0.080*
H21B	0.8891	0.2288	0.0068	0.080*
C22	0.5255 (3)	0.7126 (3)	0.62792 (12)	0.0742 (7)
H22	0.5377	0.6186	0.6268	0.089*
C23	0.3185 (3)	0.5673 (3)	0.51074 (11)	0.0715 (7)
C24	0.5675 (3)	−0.5308 (3)	0.13702 (13)	0.0727 (7)
H24	0.5766	−0.6252	0.1358	0.087*
C25	1.0243 (3)	0.4454 (3)	−0.16668 (12)	0.0723 (7)
H25	1.0792	0.5179	−0.1805	0.087*
O5	0.6789 (2)	0.7139 (2)	0.72684 (9)	0.1000 (6)
C27	1.0266 (3)	0.3162 (3)	−0.19182 (12)	0.0780 (7)
H27	1.0820	0.3002	−0.2230	0.094*
O2	0.2913 (2)	0.5903 (2)	0.39992 (8)	0.1026 (6)
C29	0.8584 (2)	0.0796 (2)	0.07149 (11)	0.0682 (6)
H29A	0.9384	0.0251	0.0638	0.082*
H29B	0.8948	0.1382	0.1083	0.082*
C30	0.5948 (3)	0.7889 (3)	0.68033 (13)	0.0799 (7)
C31	0.2607 (3)	0.5211 (3)	0.44426 (12)	0.0769 (7)
F4	−0.1739 (2)	0.4179 (2)	0.28990 (8)	0.1210 (6)
C33	0.1666 (3)	0.3919 (3)	0.43095 (12)	0.0733 (7)
C34	0.3691 (3)	0.6978 (3)	0.51894 (12)	0.0803 (7)
H34	0.3588	0.7492	0.4821	0.096*
C35	−0.0142 (3)	0.2610 (3)	0.34497 (12)	0.0787 (8)
C36	0.0179 (3)	0.1235 (3)	0.35708 (12)	0.0826 (8)
H36	0.1025	0.1030	0.3856	0.099*
C37	0.8455 (3)	0.6307 (3)	−0.05740 (13)	0.0797 (7)
H37A	0.7462	0.6047	−0.0775	0.120*
H37B	0.8534	0.7272	−0.0478	0.120*
H37C	0.8706	0.5804	−0.0188	0.120*
C38	0.4382 (3)	0.7727 (3)	0.57692 (13)	0.0776 (7)
C39	0.3083 (3)	0.4666 (3)	0.56284 (12)	0.0808 (7)
H39A	0.3055	0.5166	0.6018	0.097*
H39B	0.3959	0.4139	0.5699	0.097*
C40	−0.1396 (4)	0.2852 (4)	0.30224 (14)	0.0935 (9)
C41	0.0852 (3)	0.3759 (3)	0.37287 (13)	0.0840 (8)
H41	0.0928	0.4493	0.3459	0.101*
O6	−0.0522 (3)	−0.1187 (2)	0.33634 (11)	0.1141 (7)
F3	0.3415 (3)	0.97700 (19)	0.53269 (11)	0.1524 (9)
C44	0.1740 (3)	0.3700 (3)	0.54768 (12)	0.0921 (9)
H44A	0.0863	0.4217	0.5457	0.111*
H44B	0.1757	0.3042	0.5816	0.111*
C45	0.1653 (3)	0.2928 (3)	0.48495 (12)	0.0846 (8)
H45A	0.2485	0.2349	0.4879	0.102*
H45B	0.0756	0.2343	0.4766	0.102*
C46	0.5792 (4)	0.9275 (3)	0.68372 (16)	0.0975 (9)
H46	0.6264	0.9786	0.7190	0.117*
C47	−0.0755 (3)	0.0179 (4)	0.32694 (15)	0.0913 (9)
C48	0.3954 (4)	−0.3343 (3)	0.28049 (13)	0.1087 (10)
H48A	0.3209	−0.3989	0.2589	0.163*
H48B	0.3517	−0.2730	0.3060	0.163*
H48C	0.4704	−0.3826	0.3072	0.163*
C49	0.4926 (4)	0.9889 (3)	0.6342 (2)	0.1229 (12)
H49	0.4792	1.0825	0.6358	0.147*
C50	−0.2011 (4)	0.0478 (4)	0.28457 (16)	0.1095 (11)
H50	−0.2637	−0.0229	0.2643	0.131*
C51	−0.2339 (4)	0.1829 (5)	0.27229 (16)	0.1145 (11)
H51	−0.3189	0.2037	0.2441	0.137*
C52	0.4259 (4)	0.9131 (3)	0.58215 (17)	0.1020 (9)
C54	0.0799 (4)	−0.1549 (4)	0.3739 (2)	0.1360 (14)
H54A	0.1614	−0.1118	0.3581	0.204*
H54B	0.0861	−0.2527	0.3726	0.204*
H54C	0.0830	−0.1252	0.4169	0.204*
C55	0.7647 (4)	0.7839 (3)	0.77809 (15)	0.1175 (11)
H55A	0.8265	0.8535	0.7630	0.176*
H55B	0.8252	0.7208	0.8039	0.176*
H55C	0.7019	0.8258	0.8029	0.176*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
F1	0.1075 (10)	0.0526 (8)	0.1018 (11)	0.0057 (7)	0.0447 (9)	−0.0015 (7)
O1	0.0905 (11)	0.0540 (10)	0.0632 (10)	−0.0054 (8)	0.0210 (9)	−0.0035 (8)
O4	0.0902 (11)	0.0533 (10)	0.0936 (12)	−0.0070 (8)	0.0364 (10)	0.0036 (8)
F2	0.1283 (12)	0.0732 (10)	0.0938 (11)	0.0039 (9)	0.0572 (9)	−0.0062 (8)
C5	0.0541 (12)	0.0410 (12)	0.0645 (14)	0.0075 (9)	0.0151 (10)	0.0029 (10)
C6	0.0572 (12)	0.0434 (12)	0.0591 (14)	0.0080 (10)	0.0183 (11)	−0.0030 (10)
C7	0.0629 (13)	0.0544 (15)	0.0648 (14)	0.0012 (11)	0.0163 (11)	0.0092 (11)
C8	0.0638 (13)	0.0511 (13)	0.0594 (14)	−0.0038 (10)	0.0160 (11)	0.0065 (11)
C9	0.0541 (11)	0.0437 (12)	0.0594 (13)	0.0057 (9)	0.0180 (10)	0.0009 (10)
C10	0.0642 (13)	0.0559 (14)	0.0602 (14)	0.0032 (11)	0.0237 (11)	0.0092 (11)
O3	0.1237 (14)	0.0769 (12)	0.0651 (11)	−0.0099 (10)	0.0422 (10)	0.0060 (9)
C12	0.0820 (15)	0.0563 (15)	0.0671 (15)	0.0027 (12)	0.0283 (13)	0.0022 (12)
C13	0.0669 (13)	0.0447 (13)	0.0606 (13)	0.0033 (10)	0.0222 (11)	−0.0028 (10)
C14	0.0573 (12)	0.0472 (13)	0.0603 (14)	0.0004 (10)	0.0178 (10)	0.0058 (10)
C15	0.0664 (13)	0.0504 (13)	0.0651 (15)	0.0049 (10)	0.0222 (11)	0.0045 (11)
C16	0.0705 (14)	0.0533 (14)	0.0684 (15)	0.0007 (11)	0.0213 (12)	0.0024 (12)
C17	0.0617 (13)	0.0541 (14)	0.0598 (14)	0.0024 (10)	0.0189 (11)	0.0093 (11)
C18	0.0670 (13)	0.0535 (13)	0.0616 (14)	0.0004 (11)	0.0158 (11)	0.0040 (11)
C19	0.0717 (14)	0.0625 (16)	0.0565 (14)	−0.0056 (12)	0.0162 (11)	0.0068 (12)
C20	0.0850 (16)	0.0688 (18)	0.0674 (16)	−0.0083 (13)	0.0134 (13)	0.0227 (13)
C21	0.0795 (15)	0.0544 (14)	0.0632 (15)	−0.0096 (11)	0.0108 (12)	0.0057 (11)
C22	0.0987 (18)	0.0635 (16)	0.0681 (17)	0.0113 (14)	0.0334 (14)	0.0018 (13)
C23	0.0922 (17)	0.0703 (18)	0.0614 (16)	0.0245 (14)	0.0337 (13)	0.0114 (12)
C24	0.0839 (16)	0.0494 (14)	0.0856 (18)	0.0006 (12)	0.0185 (14)	0.0153 (13)
C25	0.0761 (15)	0.0691 (17)	0.0772 (17)	−0.0067 (13)	0.0311 (13)	0.0148 (13)
O5	0.1470 (17)	0.0775 (13)	0.0736 (13)	−0.0049 (12)	0.0182 (12)	0.0008 (11)
C27	0.0853 (17)	0.084 (2)	0.0748 (17)	0.0039 (14)	0.0420 (14)	0.0101 (14)
O2	0.1667 (18)	0.0881 (14)	0.0632 (11)	0.0080 (13)	0.0474 (12)	0.0147 (10)
C29	0.0729 (14)	0.0639 (15)	0.0650 (15)	−0.0100 (12)	0.0087 (12)	0.0079 (12)
C30	0.0995 (19)	0.0662 (18)	0.0807 (19)	0.0013 (15)	0.0351 (16)	0.0068 (15)
C31	0.1073 (19)	0.0776 (18)	0.0566 (15)	0.0314 (15)	0.0355 (14)	0.0123 (13)
F4	0.1282 (13)	0.1394 (17)	0.1007 (12)	0.0539 (12)	0.0215 (10)	0.0341 (11)
C33	0.0932 (17)	0.0785 (19)	0.0570 (16)	0.0277 (15)	0.0305 (14)	0.0111 (13)
C34	0.1038 (19)	0.080 (2)	0.0666 (17)	0.0287 (16)	0.0325 (14)	0.0184 (14)
C35	0.0879 (18)	0.098 (2)	0.0588 (15)	0.0259 (17)	0.0311 (14)	0.0082 (15)
C36	0.0878 (18)	0.099 (2)	0.0680 (17)	0.0251 (17)	0.0271 (14)	0.0042 (16)
C37	0.0767 (15)	0.0667 (17)	0.101 (2)	0.0059 (13)	0.0291 (15)	−0.0043 (14)
C38	0.0963 (18)	0.0647 (17)	0.0798 (19)	0.0160 (14)	0.0339 (15)	0.0086 (14)
C39	0.0998 (18)	0.089 (2)	0.0597 (15)	0.0095 (16)	0.0302 (14)	0.0125 (13)
C40	0.097 (2)	0.122 (3)	0.0701 (19)	0.041 (2)	0.0291 (17)	0.0216 (19)
C41	0.107 (2)	0.088 (2)	0.0671 (18)	0.0394 (17)	0.0333 (16)	0.0119 (15)
O6	0.1315 (18)	0.0947 (18)	0.1233 (18)	0.0054 (14)	0.0425 (15)	−0.0041 (13)
F3	0.196 (2)	0.0803 (13)	0.1656 (19)	0.0409 (13)	−0.0178 (16)	0.0237 (12)
C44	0.113 (2)	0.104 (2)	0.0666 (17)	0.0101 (18)	0.0360 (15)	0.0221 (15)
C45	0.1054 (19)	0.088 (2)	0.0659 (17)	0.0096 (15)	0.0288 (14)	0.0173 (14)
C46	0.123 (2)	0.071 (2)	0.099 (2)	−0.0025 (18)	0.0245 (19)	−0.0082 (17)
C47	0.091 (2)	0.110 (3)	0.081 (2)	0.011 (2)	0.0364 (17)	−0.0005 (19)
C48	0.162 (3)	0.104 (2)	0.0699 (18)	−0.014 (2)	0.0522 (19)	0.0138 (16)
C49	0.146 (3)	0.058 (2)	0.162 (4)	0.013 (2)	0.020 (3)	−0.005 (2)
C50	0.101 (2)	0.137 (3)	0.093 (2)	0.001 (2)	0.026 (2)	−0.006 (2)
C51	0.098 (2)	0.158 (4)	0.088 (2)	0.019 (3)	0.0149 (19)	0.012 (2)
C52	0.125 (2)	0.070 (2)	0.111 (2)	0.0194 (19)	0.016 (2)	0.0157 (19)
C54	0.109 (3)	0.091 (3)	0.218 (4)	0.025 (2)	0.049 (3)	0.038 (3)
C55	0.166 (3)	0.104 (3)	0.076 (2)	−0.010 (2)	0.009 (2)	−0.0054 (18)

Geometric parameters (Å, º) top

F1—C16	1.362 (3)	O2—C31	1.234 (3)
O1—C6	1.231 (2)	C29—H29A	0.9700
O4—C7	1.372 (3)	C29—H29B	0.9700
O4—C37	1.427 (3)	C30—C46	1.371 (4)
F2—C12	1.371 (3)	C31—C33	1.490 (4)
C5—C15	1.346 (3)	F4—C40	1.364 (4)
C5—C6	1.489 (3)	C33—C41	1.335 (3)
C5—C21	1.495 (3)	C33—C45	1.512 (3)
C6—C9	1.498 (3)	C34—C38	1.464 (4)
C7—C10	1.375 (3)	C34—H34	0.9300
C7—C25	1.387 (3)	C35—C40	1.370 (4)
C8—C19	1.375 (3)	C35—C36	1.404 (4)
C8—C14	1.392 (3)	C35—C41	1.465 (4)
C8—H8	0.9300	C36—C47	1.387 (4)
C9—C13	1.343 (3)	C36—H36	0.9300
C9—C18	1.501 (3)	C37—H37A	0.9600
C10—C17	1.404 (3)	C37—H37B	0.9600
C10—H10	0.9300	C37—H37C	0.9600
O3—C19	1.381 (3)	C38—C52	1.386 (4)
O3—C48	1.416 (3)	C39—C44	1.504 (4)
C12—C27	1.366 (3)	C39—H39A	0.9700
C12—C17	1.385 (3)	C39—H39B	0.9700
C13—C14	1.465 (3)	C40—C51	1.368 (5)
C13—H13	0.9300	C41—H41	0.9300
C14—C16	1.389 (3)	O6—C47	1.370 (4)
C15—C17	1.457 (3)	O6—C54	1.395 (4)
C15—H15	0.9300	F3—C52	1.368 (3)
C16—C24	1.361 (3)	C44—C45	1.526 (4)
C18—C29	1.515 (3)	C44—H44A	0.9700
C18—H18A	0.9700	C44—H44B	0.9700
C18—H18B	0.9700	C45—H45A	0.9700
C19—C20	1.387 (3)	C45—H45B	0.9700
C20—C24	1.378 (3)	C46—C49	1.367 (4)
C20—H20	0.9300	C46—H46	0.9300
C21—C29	1.522 (3)	C47—C50	1.381 (4)
C21—H21A	0.9700	C48—H48A	0.9600
C21—H21B	0.9700	C48—H48B	0.9600
C22—C30	1.381 (3)	C48—H48C	0.9600
C22—C38	1.385 (3)	C49—C52	1.366 (5)
C22—H22	0.9300	C49—H49	0.9300
C23—C34	1.334 (4)	C50—C51	1.383 (5)
C23—C31	1.486 (4)	C50—H50	0.9300
C23—C39	1.502 (3)	C51—H51	0.9300
C24—H24	0.9300	C54—H54A	0.9600
C25—C27	1.372 (3)	C54—H54B	0.9600
C25—H25	0.9300	C54—H54C	0.9600
O5—C30	1.383 (3)	C55—H55A	0.9600
O5—C55	1.386 (3)	C55—H55B	0.9600
C27—H27	0.9300	C55—H55C	0.9600

C7—O4—C37	116.94 (17)	C23—C31—C33	120.4 (2)
C15—C5—C6	116.80 (19)	C41—C33—C31	117.1 (2)
C15—C5—C21	125.17 (19)	C41—C33—C45	125.2 (3)
C6—C5—C21	117.96 (19)	C31—C33—C45	117.6 (2)
O1—C6—C5	120.62 (19)	C23—C34—C38	130.1 (2)
O1—C6—C9	120.33 (18)	C23—C34—H34	115.0
C5—C6—C9	119.04 (19)	C38—C34—H34	115.0
O4—C7—C10	124.4 (2)	C40—C35—C36	117.3 (3)
O4—C7—C25	115.3 (2)	C40—C35—C41	120.1 (3)
C10—C7—C25	120.3 (2)	C36—C35—C41	122.6 (3)
C19—C8—C14	121.1 (2)	C47—C36—C35	120.6 (3)
C19—C8—H8	119.4	C47—C36—H36	119.7
C14—C8—H8	119.4	C35—C36—H36	119.7
C13—C9—C6	116.31 (19)	O4—C37—H37A	109.5
C13—C9—C18	124.71 (19)	O4—C37—H37B	109.5
C6—C9—C18	118.90 (18)	H37A—C37—H37B	109.5
C7—C10—C17	121.2 (2)	O4—C37—H37C	109.5
C7—C10—H10	119.4	H37A—C37—H37C	109.5
C17—C10—H10	119.4	H37B—C37—H37C	109.5
C19—O3—C48	118.0 (2)	C52—C38—C22	115.7 (3)
C27—C12—F2	118.2 (2)	C52—C38—C34	120.7 (3)
C27—C12—C17	124.2 (2)	C22—C38—C34	123.5 (2)
F2—C12—C17	117.6 (2)	C23—C39—C44	112.5 (2)
C9—C13—C14	128.9 (2)	C23—C39—H39A	109.1
C9—C13—H13	115.6	C44—C39—H39A	109.1
C14—C13—H13	115.6	C23—C39—H39B	109.1
C16—C14—C8	116.4 (2)	C44—C39—H39B	109.1
C16—C14—C13	120.4 (2)	H39A—C39—H39B	107.8
C8—C14—C13	122.94 (19)	F4—C40—C51	118.3 (3)
C5—C15—C17	129.0 (2)	F4—C40—C35	118.5 (3)
C5—C15—H15	115.5	C51—C40—C35	123.2 (3)
C17—C15—H15	115.5	C33—C41—C35	130.2 (3)
C24—C16—F1	118.5 (2)	C33—C41—H41	114.9
C24—C16—C14	123.2 (2)	C35—C41—H41	114.9
F1—C16—C14	118.3 (2)	C47—O6—C54	118.4 (3)
C12—C17—C10	115.72 (19)	C39—C44—C45	112.5 (2)
C12—C17—C15	120.5 (2)	C39—C44—H44A	109.1
C10—C17—C15	123.8 (2)	C45—C44—H44A	109.1
C9—C18—C29	112.16 (18)	C39—C44—H44B	109.1
C9—C18—H18A	109.2	C45—C44—H44B	109.1
C29—C18—H18A	109.2	H44A—C44—H44B	107.8
C9—C18—H18B	109.2	C33—C45—C44	110.8 (2)
C29—C18—H18B	109.2	C33—C45—H45A	109.5
H18A—C18—H18B	107.9	C44—C45—H45A	109.5
C8—C19—O3	114.9 (2)	C33—C45—H45B	109.5
C8—C19—C20	120.6 (2)	C44—C45—H45B	109.5
O3—C19—C20	124.4 (2)	H45A—C45—H45B	108.1
C24—C20—C19	119.0 (2)	C49—C46—C30	118.6 (3)
C24—C20—H20	120.5	C49—C46—H46	120.7
C19—C20—H20	120.5	C30—C46—H46	120.7
C5—C21—C29	111.31 (19)	O6—C47—C50	116.0 (3)
C5—C21—H21A	109.4	O6—C47—C36	124.1 (3)
C29—C21—H21A	109.4	C50—C47—C36	119.9 (3)
C5—C21—H21B	109.4	O3—C48—H48A	109.5
C29—C21—H21B	109.4	O3—C48—H48B	109.5
H21A—C21—H21B	108.0	H48A—C48—H48B	109.5
C30—C22—C38	121.5 (3)	O3—C48—H48C	109.5
C30—C22—H22	119.3	H48A—C48—H48C	109.5
C38—C22—H22	119.3	H48B—C48—H48C	109.5
C34—C23—C31	116.4 (2)	C46—C49—C52	120.1 (3)
C34—C23—C39	125.6 (2)	C46—C49—H49	119.9
C31—C23—C39	117.9 (2)	C52—C49—H49	119.9
C16—C24—C20	119.6 (2)	C47—C50—C51	120.1 (4)
C16—C24—H24	120.2	C47—C50—H50	120.0
C20—C24—H24	120.2	C51—C50—H50	120.0
C27—C25—C7	119.9 (2)	C40—C51—C50	119.0 (3)
C27—C25—H25	120.1	C40—C51—H51	120.5
C7—C25—H25	120.1	C50—C51—H51	120.5
C30—O5—C55	118.4 (2)	C49—C52—F3	119.2 (3)
C12—C27—C25	118.7 (2)	C49—C52—C38	123.1 (3)
C12—C27—H27	120.7	F3—C52—C38	117.7 (3)
C25—C27—H27	120.7	O6—C54—H54A	109.5
C18—C29—C21	110.31 (18)	O6—C54—H54B	109.5
C18—C29—H29A	109.6	H54A—C54—H54B	109.5
C21—C29—H29A	109.6	O6—C54—H54C	109.5
C18—C29—H29B	109.6	H54A—C54—H54C	109.5
C21—C29—H29B	109.6	H54B—C54—H54C	109.5
H29A—C29—H29B	108.1	O5—C55—H55A	109.5
C46—C30—O5	124.6 (3)	O5—C55—H55B	109.5
C46—C30—C22	121.0 (3)	H55A—C55—H55B	109.5
O5—C30—C22	114.4 (2)	O5—C55—H55C	109.5
O2—C31—C23	119.6 (3)	H55A—C55—H55C	109.5
O2—C31—C33	119.9 (2)	H55B—C55—H55C	109.5

Experimental details

Crystal data
Chemical formula	C₂₂H₂₀F₂O₃
M_r	370.38
Crystal system, space group	Triclinic, P1
Temperature (K)	273
a, b, c (Å)	9.2334 (10), 9.7601 (11), 21.433 (2)
α, β, γ (°)	90.195 (2), 100.568 (2), 92.934 (2)
V (Å³)	1896.1 (4)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	0.10
Crystal size (mm)	0.10 × 0.10 × 0.10

Data collection
Diffractometer	Bruker APEXII CCD area-detector
Absorption correction	Multi-scan (SADABS; Bruker, 2004)
T_min, T_max	0.990, 0.990
No. of measured, independent and observed [I > 2σ(I)] reflections	10069, 6634, 3949
R_int	0.101
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.057, 0.147, 1.00
No. of reflections	6634
No. of parameters	492
H-atom treatment	H-atom parameters not refined
Δρ_max, Δρ_min (e Å⁻³)	0.26, −0.27

Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

Acknowledgements

This work was supported by the Xinmiao Talent Project of Zhejiang Province (CLF). The use of the X-ray crystallographic service at the Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, and the valuable assistance of the staff is gratefully acknowledged.

References

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