organic compounds
2,4-Dichloro-6-((1R)-1-{[(R)-(2-chlorophenyl)(cyclopentyl)methyl]amino}ethyl)phenol
aSchool of Chemistry and Chemical Engineering, University of Jinan, Shandong 250022, People's Republic of China, bJincheng Pharmaceutical Co Ltd, Shandong Provience, Shandong 255100, People's Republic of China, and cDepartment of Materials Science and Chemical Engineering, Taishan University, Shandong 271021, People's Republic of China
*Correspondence e-mail: 153725248@163.com
In the title compound, C20H22Cl3NO, the five-membered ring adopts an and the two benzene rings are oriented at a dihedral angle of 40.44 (9)°. Intramolecular O—H⋯N and N—H⋯Cl hydrogen bonding is present. In the crystal, the molecules are linked via weak intermolecular C—H⋯O hydrogen bonds.
Related literature
For aminophenols, see: Li et al. (2004); Puigjaner et al. (1999); Cimarelli et al. (2002); Joshi & Malhotra (2003); Zhang et al. (2003); Watts et al. (2005). For the synthesis, see: Yang et al. (2005).
Experimental
Crystal data
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Data collection: SMART (Bruker, 1999); cell SAINT (Bruker, 1999); data reduction: SAINT; 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/S1600536809041403/xu2619sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809041403/xu2619Isup2.hkl
The title compound was prepared according to the procedure of Yang et al. (2005). (R)-1-(2-chlorophenyl)-1-cyclopentylmethanamine (0.9 mmol) and 1-(3,5-dichloro-2-hydroxyphenyl)ethanone (0.9 mmol) were dissolved in methanol (10 ml) and reacted at room temperature for 48 h. After removal of the solvent, NaBH4 (4.5 mmol) was added to the solution in THF/ethanol (1:1 v/v, 20 ml) and stirred at 273 K until the solution became colourless. The solvent was then removed under reduced pressure. Water (10 ml) was added to the residue and 1 M HCl was added dropwise until hydrogen production ceased. The mixture was neutralized with aqueous solution of Na2CO3, then extracted with CHCl3, and the organic layer was dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure. Further purification was carried out by thin-layer silica-gel
(chloroform) to give a colorless solid (yield 82.7%). Single crystals of (I) were grown from the n-hexane solution.Imino-H and hydroxy-H atoms were located in a difference Fourier map and refined as riding in as-found relative positions with Uiso(H) = 1.2Ueq(N,O). Other H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with C—H = 0.93–0.98 Å, and refined in riding mode with Uiso(H) = 1.5Ueq(C) for mathyl H atoms and 1.2Ueq(C) for the others.
The chiral aminophenols containing some O and N atoms are of great interests due to their widespread application in
such as chiral bases, auxiliaries and ligands (Li et al., 2004; Puigjaner et al., 1999; Cimarelli et al., 2002). Recently, the synthesis of chiral aminophenols with a varity of functionalities has attracted increasing attention (Zhang et al., 2003; Watts et al., 2005). Herein, we present the molecular structure of the title aminophenol (I), which was initially prepared to test its The aminophenol was prepared by conventional condensation of (R)-1-(2-chlorophenyl)-1-cyclopentylmethanamine with 1-(3,5-dichloro-2-hydroxyphenyl) ethanone in methanol.The molecular structure of (I) is illustrated in Fig. 1. The title compoud has two chiral centers (C7/C9), which have configurations R, R, confirmed by the X-ray structural analysis. There are the intramolecular O—H···N and N—H···Cl hydrogen bonding which stablizes the conformation of the molecule (Table 1). In the crystal packing, the molecules are linked to each other via intermolecular C—H···O hydrogen bonds (Table 1).
For aminophenols, see: Li et al. (2004); Puigjaner et al. (1999); Cimarelli et al. (2002); Joshi & Malhotra (2003); Zhang et al. (2003); Watts et al. (2005). For the synthesis, see: Yang et al. (2005).
Data collection: SMART (Bruker, 1999); cell
SAINT (Bruker, 1999); data reduction: SAINT (Bruker, 1999); 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. The structure of the title compound with 30% probability ellipsoids. H atoms are shown as spheres of arbitrary radii. |
C20H22Cl3NO | F(000) = 832 |
Mr = 398.74 | Dx = 1.354 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 4018 reflections |
a = 8.4132 (7) Å | θ = 2.4–23.8° |
b = 13.6767 (10) Å | µ = 0.48 mm−1 |
c = 17.0018 (14) Å | T = 298 K |
V = 1956.3 (3) Å3 | Plate, colorless |
Z = 4 | 0.21 × 0.16 × 0.12 mm |
Bruker SMART CCD area-detector diffractometer | 3453 independent reflections |
Radiation source: fine-focus sealed tube | 3005 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
φ and ω scans | θmax = 25.1°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −9→10 |
Tmin = 0.907, Tmax = 0.945 | k = −16→13 |
10361 measured reflections | l = −20→19 |
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)] = 0.036 | H-atom parameters constrained |
wR(F2) = 0.096 | w = 1/[σ2(Fo2) + (0.0479P)2 + 0.4088P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
3453 reflections | Δρmax = 0.20 e Å−3 |
227 parameters | Δρmin = −0.18 e Å−3 |
0 restraints | Absolute structure: Flack (1983), 1464 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.00 (7) |
C20H22Cl3NO | V = 1956.3 (3) Å3 |
Mr = 398.74 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 8.4132 (7) Å | µ = 0.48 mm−1 |
b = 13.6767 (10) Å | T = 298 K |
c = 17.0018 (14) Å | 0.21 × 0.16 × 0.12 mm |
Bruker SMART CCD area-detector diffractometer | 3453 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3005 reflections with I > 2σ(I) |
Tmin = 0.907, Tmax = 0.945 | Rint = 0.022 |
10361 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | H-atom parameters constrained |
wR(F2) = 0.096 | Δρmax = 0.20 e Å−3 |
S = 1.04 | Δρmin = −0.18 e Å−3 |
3453 reflections | Absolute structure: Flack (1983), 1464 Friedel pairs |
227 parameters | Absolute structure parameter: 0.00 (7) |
0 restraints |
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 | ||
Cl1 | 0.74492 (12) | 0.20053 (6) | 0.65026 (5) | 0.0892 (3) | |
Cl2 | 0.77477 (11) | 0.32755 (7) | 0.35243 (5) | 0.0818 (3) | |
Cl3 | 0.17174 (12) | 0.73428 (6) | 0.60165 (5) | 0.0812 (3) | |
N1 | 0.4064 (2) | 0.58218 (15) | 0.51047 (11) | 0.0438 (5) | |
H1N | 0.3999 | 0.6424 | 0.5201 | 0.053* | |
O1 | 0.6034 (2) | 0.49741 (14) | 0.41237 (10) | 0.0568 (5) | |
H1A | 0.5277 | 0.5427 | 0.4341 | 0.068* | |
C1 | 0.6303 (3) | 0.42963 (19) | 0.46839 (14) | 0.0444 (6) | |
C2 | 0.5780 (3) | 0.44142 (18) | 0.54534 (14) | 0.0421 (5) | |
C3 | 0.6114 (3) | 0.36909 (19) | 0.60025 (16) | 0.0498 (6) | |
H3 | 0.5742 | 0.3755 | 0.6515 | 0.060* | |
C4 | 0.6985 (3) | 0.28820 (19) | 0.57958 (18) | 0.0568 (7) | |
C5 | 0.7529 (4) | 0.2752 (2) | 0.50434 (17) | 0.0603 (7) | |
H5 | 0.8136 | 0.2208 | 0.4910 | 0.072* | |
C6 | 0.7148 (3) | 0.3454 (2) | 0.44879 (15) | 0.0529 (6) | |
C7 | 0.5002 (3) | 0.53592 (18) | 0.57377 (14) | 0.0464 (6) | |
H7 | 0.4300 | 0.5211 | 0.6182 | 0.056* | |
C8 | 0.6279 (4) | 0.6086 (2) | 0.6006 (2) | 0.0712 (9) | |
H8A | 0.7007 | 0.6206 | 0.5582 | 0.107* | |
H8B | 0.6847 | 0.5818 | 0.6446 | 0.107* | |
H8C | 0.5784 | 0.6689 | 0.6159 | 0.107* | |
C9 | 0.2437 (3) | 0.54384 (17) | 0.49936 (12) | 0.0413 (5) | |
H9 | 0.2565 | 0.4764 | 0.4809 | 0.050* | |
C10 | 0.1458 (3) | 0.53736 (19) | 0.57434 (14) | 0.0462 (6) | |
C11 | 0.1105 (3) | 0.6155 (2) | 0.62414 (15) | 0.0551 (7) | |
C12 | 0.0257 (3) | 0.6038 (3) | 0.69294 (16) | 0.0657 (9) | |
H12 | 0.0036 | 0.6578 | 0.7243 | 0.079* | |
C13 | −0.0256 (4) | 0.5139 (3) | 0.71500 (17) | 0.0722 (9) | |
H13 | −0.0807 | 0.5061 | 0.7620 | 0.087* | |
C14 | 0.0042 (4) | 0.4338 (3) | 0.66735 (19) | 0.0717 (9) | |
H14 | −0.0323 | 0.3722 | 0.6821 | 0.086* | |
C15 | 0.0871 (3) | 0.4449 (2) | 0.59875 (16) | 0.0555 (7) | |
H15 | 0.1055 | 0.3905 | 0.5673 | 0.067* | |
C16 | 0.1623 (3) | 0.5990 (2) | 0.43215 (14) | 0.0480 (6) | |
H16 | 0.1482 | 0.6675 | 0.4478 | 0.058* | |
C17 | −0.0009 (4) | 0.5558 (3) | 0.41129 (17) | 0.0771 (10) | |
H17A | −0.0032 | 0.4861 | 0.4214 | 0.092* | |
H17B | −0.0843 | 0.5870 | 0.4417 | 0.092* | |
C18 | −0.0216 (4) | 0.5764 (4) | 0.32453 (19) | 0.1024 (14) | |
H18A | −0.0591 | 0.5182 | 0.2978 | 0.123* | |
H18B | −0.0995 | 0.6279 | 0.3170 | 0.123* | |
C19 | 0.1269 (4) | 0.6057 (4) | 0.29287 (18) | 0.1004 (15) | |
H19A | 0.1208 | 0.6730 | 0.2752 | 0.121* | |
H19B | 0.1533 | 0.5650 | 0.2480 | 0.121* | |
C20 | 0.2520 (3) | 0.5960 (2) | 0.35444 (14) | 0.0607 (7) | |
H20A | 0.3275 | 0.6494 | 0.3511 | 0.073* | |
H20B | 0.3088 | 0.5346 | 0.3487 | 0.073* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1119 (7) | 0.0569 (4) | 0.0988 (6) | 0.0057 (5) | −0.0350 (6) | 0.0237 (4) |
Cl2 | 0.0826 (6) | 0.0970 (6) | 0.0659 (5) | 0.0243 (5) | 0.0076 (4) | −0.0202 (4) |
Cl3 | 0.0997 (6) | 0.0587 (4) | 0.0852 (5) | 0.0023 (4) | 0.0080 (5) | −0.0205 (4) |
N1 | 0.0408 (10) | 0.0424 (11) | 0.0481 (11) | 0.0033 (9) | −0.0060 (9) | 0.0035 (9) |
O1 | 0.0513 (10) | 0.0707 (12) | 0.0484 (10) | 0.0118 (9) | 0.0076 (8) | 0.0129 (9) |
C1 | 0.0368 (12) | 0.0505 (14) | 0.0458 (13) | 0.0015 (11) | −0.0041 (10) | 0.0016 (11) |
C2 | 0.0354 (12) | 0.0429 (13) | 0.0480 (14) | −0.0021 (11) | −0.0048 (10) | 0.0026 (11) |
C3 | 0.0511 (14) | 0.0501 (14) | 0.0483 (14) | −0.0045 (12) | −0.0077 (12) | 0.0047 (11) |
C4 | 0.0573 (16) | 0.0423 (15) | 0.0709 (19) | 0.0000 (12) | −0.0216 (14) | 0.0066 (13) |
C5 | 0.0590 (16) | 0.0455 (15) | 0.077 (2) | 0.0077 (14) | −0.0160 (14) | −0.0090 (13) |
C6 | 0.0455 (14) | 0.0606 (16) | 0.0527 (15) | 0.0038 (13) | −0.0047 (12) | −0.0112 (12) |
C7 | 0.0444 (12) | 0.0514 (15) | 0.0433 (13) | 0.0056 (12) | −0.0034 (11) | 0.0009 (11) |
C8 | 0.0663 (19) | 0.0613 (18) | 0.086 (2) | 0.0053 (15) | −0.0273 (17) | −0.0162 (16) |
C9 | 0.0398 (12) | 0.0444 (12) | 0.0397 (12) | 0.0040 (11) | 0.0000 (10) | −0.0036 (9) |
C10 | 0.0376 (12) | 0.0568 (15) | 0.0442 (13) | 0.0039 (11) | −0.0060 (10) | 0.0000 (11) |
C11 | 0.0459 (14) | 0.0722 (18) | 0.0473 (14) | 0.0037 (13) | −0.0065 (12) | −0.0100 (13) |
C12 | 0.0479 (16) | 0.107 (3) | 0.0423 (15) | 0.0089 (17) | −0.0037 (13) | −0.0125 (16) |
C13 | 0.0513 (17) | 0.121 (3) | 0.0446 (16) | 0.0014 (19) | −0.0023 (13) | 0.0113 (19) |
C14 | 0.0548 (16) | 0.091 (2) | 0.069 (2) | −0.0134 (18) | −0.0066 (16) | 0.0246 (18) |
C15 | 0.0467 (14) | 0.0685 (18) | 0.0512 (15) | −0.0014 (13) | −0.0035 (12) | −0.0006 (13) |
C16 | 0.0487 (14) | 0.0514 (15) | 0.0438 (13) | 0.0091 (12) | −0.0049 (11) | −0.0032 (11) |
C17 | 0.0420 (14) | 0.137 (3) | 0.0519 (17) | 0.0015 (19) | −0.0033 (13) | 0.0090 (18) |
C18 | 0.062 (2) | 0.189 (4) | 0.0560 (19) | −0.016 (3) | −0.0167 (16) | 0.025 (2) |
C19 | 0.064 (2) | 0.192 (5) | 0.0453 (17) | 0.001 (3) | −0.0046 (15) | 0.014 (2) |
C20 | 0.0469 (15) | 0.088 (2) | 0.0476 (14) | −0.0023 (14) | −0.0027 (13) | 0.0102 (14) |
Cl1—C4 | 1.742 (3) | C10—C11 | 1.395 (4) |
Cl2—C6 | 1.731 (3) | C10—C15 | 1.419 (4) |
Cl3—C11 | 1.747 (3) | C11—C12 | 1.379 (4) |
N1—C7 | 1.477 (3) | C12—C13 | 1.356 (5) |
N1—C9 | 1.478 (3) | C12—H12 | 0.9300 |
N1—H1N | 0.8410 | C13—C14 | 1.386 (5) |
O1—C1 | 1.348 (3) | C13—H13 | 0.9300 |
O1—H1A | 0.9621 | C14—C15 | 1.368 (4) |
C1—C2 | 1.390 (4) | C14—H14 | 0.9300 |
C1—C6 | 1.395 (4) | C15—H15 | 0.9300 |
C2—C3 | 1.389 (3) | C16—C20 | 1.522 (3) |
C2—C7 | 1.527 (3) | C16—C17 | 1.536 (4) |
C3—C4 | 1.373 (4) | C16—H16 | 0.9800 |
C3—H3 | 0.9300 | C17—C18 | 1.512 (4) |
C4—C5 | 1.370 (4) | C17—H17A | 0.9700 |
C5—C6 | 1.384 (4) | C17—H17B | 0.9700 |
C5—H5 | 0.9300 | C18—C19 | 1.417 (5) |
C7—C8 | 1.533 (4) | C18—H18A | 0.9700 |
C7—H7 | 0.9800 | C18—H18B | 0.9700 |
C8—H8A | 0.9600 | C19—C20 | 1.491 (4) |
C8—H8B | 0.9600 | C19—H19A | 0.9700 |
C8—H8C | 0.9600 | C19—H19B | 0.9700 |
C9—C10 | 1.521 (3) | C20—H20A | 0.9700 |
C9—C16 | 1.531 (3) | C20—H20B | 0.9700 |
C9—H9 | 0.9800 | ||
C7—N1—C9 | 115.86 (19) | C12—C11—Cl3 | 116.5 (2) |
C7—N1—H1N | 108.2 | C10—C11—Cl3 | 121.1 (2) |
C9—N1—H1N | 108.2 | C13—C12—C11 | 120.2 (3) |
C1—O1—H1A | 106.4 | C13—C12—H12 | 119.9 |
O1—C1—C2 | 122.1 (2) | C11—C12—H12 | 119.9 |
O1—C1—C6 | 119.0 (2) | C12—C13—C14 | 119.9 (3) |
C2—C1—C6 | 118.8 (2) | C12—C13—H13 | 120.1 |
C3—C2—C1 | 119.1 (2) | C14—C13—H13 | 120.1 |
C3—C2—C7 | 118.5 (2) | C15—C14—C13 | 120.1 (3) |
C1—C2—C7 | 122.1 (2) | C15—C14—H14 | 119.9 |
C4—C3—C2 | 120.6 (3) | C13—C14—H14 | 119.9 |
C4—C3—H3 | 119.7 | C14—C15—C10 | 121.8 (3) |
C2—C3—H3 | 119.7 | C14—C15—H15 | 119.1 |
C5—C4—C3 | 121.5 (2) | C10—C15—H15 | 119.1 |
C5—C4—Cl1 | 118.7 (2) | C20—C16—C9 | 114.3 (2) |
C3—C4—Cl1 | 119.8 (2) | C20—C16—C17 | 103.4 (2) |
C4—C5—C6 | 118.0 (2) | C9—C16—C17 | 112.5 (2) |
C4—C5—H5 | 121.0 | C20—C16—H16 | 108.8 |
C6—C5—H5 | 121.0 | C9—C16—H16 | 108.8 |
C5—C6—C1 | 121.9 (2) | C17—C16—H16 | 108.8 |
C5—C6—Cl2 | 118.7 (2) | C18—C17—C16 | 104.8 (3) |
C1—C6—Cl2 | 119.4 (2) | C18—C17—H17A | 110.8 |
N1—C7—C2 | 111.16 (19) | C16—C17—H17A | 110.8 |
N1—C7—C8 | 108.3 (2) | C18—C17—H17B | 110.8 |
C2—C7—C8 | 110.0 (2) | C16—C17—H17B | 110.8 |
N1—C7—H7 | 109.1 | H17A—C17—H17B | 108.9 |
C2—C7—H7 | 109.1 | C19—C18—C17 | 108.8 (3) |
C8—C7—H7 | 109.1 | C19—C18—H18A | 109.9 |
C7—C8—H8A | 109.5 | C17—C18—H18A | 109.9 |
C7—C8—H8B | 109.5 | C19—C18—H18B | 109.9 |
H8A—C8—H8B | 109.5 | C17—C18—H18B | 109.9 |
C7—C8—H8C | 109.5 | H18A—C18—H18B | 108.3 |
H8A—C8—H8C | 109.5 | C18—C19—C20 | 109.3 (3) |
H8B—C8—H8C | 109.5 | C18—C19—H19A | 109.8 |
N1—C9—C10 | 114.55 (18) | C20—C19—H19A | 109.8 |
N1—C9—C16 | 109.57 (19) | C18—C19—H19B | 109.8 |
C10—C9—C16 | 114.31 (19) | C20—C19—H19B | 109.8 |
N1—C9—H9 | 105.9 | H19A—C19—H19B | 108.3 |
C10—C9—H9 | 105.9 | C19—C20—C16 | 104.9 (2) |
C16—C9—H9 | 105.9 | C19—C20—H20A | 110.8 |
C11—C10—C15 | 115.5 (2) | C16—C20—H20A | 110.8 |
C11—C10—C9 | 125.4 (2) | C19—C20—H20B | 110.8 |
C15—C10—C9 | 119.1 (2) | C16—C20—H20B | 110.8 |
C12—C11—C10 | 122.4 (3) | H20A—C20—H20B | 108.8 |
O1—C1—C2—C3 | −179.4 (2) | C16—C9—C10—C11 | −69.6 (3) |
C6—C1—C2—C3 | 0.0 (4) | N1—C9—C10—C15 | −120.1 (2) |
O1—C1—C2—C7 | −5.9 (4) | C16—C9—C10—C15 | 112.3 (3) |
C6—C1—C2—C7 | 173.5 (2) | C15—C10—C11—C12 | 0.6 (4) |
C1—C2—C3—C4 | 1.8 (4) | C9—C10—C11—C12 | −177.5 (2) |
C7—C2—C3—C4 | −171.9 (2) | C15—C10—C11—Cl3 | −179.05 (19) |
C2—C3—C4—C5 | −1.2 (4) | C9—C10—C11—Cl3 | 2.8 (3) |
C2—C3—C4—Cl1 | 177.7 (2) | C10—C11—C12—C13 | 0.7 (4) |
C3—C4—C5—C6 | −1.2 (4) | Cl3—C11—C12—C13 | −179.6 (2) |
Cl1—C4—C5—C6 | 179.9 (2) | C11—C12—C13—C14 | −1.5 (4) |
C4—C5—C6—C1 | 3.1 (4) | C12—C13—C14—C15 | 0.9 (4) |
C4—C5—C6—Cl2 | −177.1 (2) | C13—C14—C15—C10 | 0.4 (4) |
O1—C1—C6—C5 | 176.9 (2) | C11—C10—C15—C14 | −1.2 (4) |
C2—C1—C6—C5 | −2.4 (4) | C9—C10—C15—C14 | 177.1 (2) |
O1—C1—C6—Cl2 | −2.9 (3) | N1—C9—C16—C20 | 56.3 (3) |
C2—C1—C6—Cl2 | 177.76 (19) | C10—C9—C16—C20 | −173.6 (2) |
C9—N1—C7—C2 | 83.1 (2) | N1—C9—C16—C17 | 173.9 (2) |
C9—N1—C7—C8 | −155.9 (2) | C10—C9—C16—C17 | −56.0 (3) |
C3—C2—C7—N1 | −153.0 (2) | C20—C16—C17—C18 | −26.1 (4) |
C1—C2—C7—N1 | 33.4 (3) | C9—C16—C17—C18 | −150.0 (3) |
C3—C2—C7—C8 | 87.0 (3) | C16—C17—C18—C19 | 13.3 (5) |
C1—C2—C7—C8 | −86.5 (3) | C17—C18—C19—C20 | 5.6 (6) |
C7—N1—C9—C10 | 49.9 (3) | C18—C19—C20—C16 | −22.4 (5) |
C7—N1—C9—C16 | 179.88 (18) | C9—C16—C20—C19 | 152.1 (3) |
N1—C9—C10—C11 | 58.0 (3) | C17—C16—C20—C19 | 29.4 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···N1 | 0.96 | 1.74 | 2.622 (3) | 151 |
N1—H1N···Cl3 | 0.84 | 2.68 | 3.260 (2) | 127 |
C13—H13···O1i | 0.93 | 2.56 | 3.422 (3) | 154 |
Symmetry code: (i) −x+1/2, −y+1, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C20H22Cl3NO |
Mr | 398.74 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 298 |
a, b, c (Å) | 8.4132 (7), 13.6767 (10), 17.0018 (14) |
V (Å3) | 1956.3 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.48 |
Crystal size (mm) | 0.21 × 0.16 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.907, 0.945 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10361, 3453, 3005 |
Rint | 0.022 |
(sin θ/λ)max (Å−1) | 0.596 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.096, 1.04 |
No. of reflections | 3453 |
No. of parameters | 227 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.18 |
Absolute structure | Flack (1983), 1464 Friedel pairs |
Absolute structure parameter | 0.00 (7) |
Computer programs: SMART (Bruker, 1999), SAINT (Bruker, 1999), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···N1 | 0.96 | 1.74 | 2.622 (3) | 151 |
N1—H1N···Cl3 | 0.84 | 2.68 | 3.260 (2) | 127 |
C13—H13···O1i | 0.93 | 2.56 | 3.422 (3) | 154 |
Symmetry code: (i) −x+1/2, −y+1, z+1/2. |
Acknowledgements
The authors are grateful to the Natural Science Foundation of Shandong Province, China (grant No. G0231) and the Foundation of the Education Ministry of China for Returned Students (grant No. G0220) for financial support. The X-ray data were collected at Taishan University, China.
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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.
The chiral aminophenols containing some O and N atoms are of great interests due to their widespread application in asymmetric synthesis such as chiral bases, auxiliaries and ligands (Li et al., 2004; Puigjaner et al., 1999; Cimarelli et al., 2002). Recently, the synthesis of chiral aminophenols with a varity of functionalities has attracted increasing attention (Zhang et al., 2003; Watts et al., 2005). Herein, we present the molecular structure of the title aminophenol (I), which was initially prepared to test its catalytic activity. The aminophenol was prepared by conventional condensation of (R)-1-(2-chlorophenyl)-1-cyclopentylmethanamine with 1-(3,5-dichloro-2-hydroxyphenyl) ethanone in methanol.
The molecular structure of (I) is illustrated in Fig. 1. The title compoud has two chiral centers (C7/C9), which have configurations R, R, confirmed by the X-ray structural analysis. There are the intramolecular O—H···N and N—H···Cl hydrogen bonding which stablizes the conformation of the molecule (Table 1). In the crystal packing, the molecules are linked to each other via intermolecular C—H···O hydrogen bonds (Table 1).