organic compounds
Ethyl 2-(3-amino-4-hydroxyphenyl)acetate
aCollege of Chemistry & Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
*Correspondence e-mail: xiaozhuping2005@163.com
The 10H13NO3, contains two crystallographically independent molecules with different conformations of the ethoxycarbonyl groups; the terminal C—C—O—C torsion angles in the two molecules are 83.6 (6) and −171.1 (3)°, resulting in twisted and straight chain conformations, respectively. The is stabilized by intermolecular N—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds. Intramolecular hydrogen bonds occur between the amino N and phenolic O atoms.
of the title compound, CRelated literature
For general background to the use of phenylacetate derivatives as intermediates for the rational design of new chemotherapeutic agents, see: Xiao, Fang et al. (2008); Xiao, Lv et al. (2008). For the preparation of the title compound, see: Xiao et al. 2010. For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2007); cell SAINT (Bruker, 2007); 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: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810044399/pv2339sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810044399/pv2339Isup2.hkl
The title compound was prepared according to the reported procedures (Xiao et al., 2010). Reduced iron powder was added to a solution of ammonium chloride (0.8 g, 15 mmole) in water (10 ml) under nitrogen atmosphere. To this stirring mixture, a solution of ethyl 2-(4-hydroxy-3-nitrophenyl)acetate (1.13 g, 5 mmole) in acetone (25 ml) was added dropwise. It was refluxed in an oil bath for 4 h. When the reaction was complete, the resulting mixture was extracted with ethylacetate, and the combined organic layers were basified by adding a
of NaHCO3. The solvent was removed under reduced pressure and furnished the title compound, which was crystallized from ethylacetate-petroleum ether (1:2) to give colorless blocks suitable for single-crystal structure determination.The H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with N—H = 0.86 and O—H = 0.82 Å and C—H = 0.93, 0.97 and 0.96 Å for aryl, methyl and methylene groups, reaspectively. Uiso(H) values were set at 1.5 × Ueq(O and methyl C) and 1.2 × the Ueq of the rest of the parent atoms.
Derivatives of phenylacetate are key intermates for the rational design of new chemotherapeutic agents such as antibacterials (Xiao, Fang, et al. 2008) and anticancers (Xiao, Lv, et al. 2008). As a part of our research on pharmoceutically active 4-hydroxy-3-phenylfuran-2(5H)-ones, we have synthesized the title compound and herein we report its crystal structure.
The
contains two crystallographically independent molecules in an of the title compound with different conformations of the ethoxy carbonyl groups. The terminal torsion angles C1—C2—O1—C3 in molecule (1) and C11—C12—O4—C13 in molecule (2) are 83.6 (6) and -171.1 (3)° resulting in twisted and straight chian conformations, respectively (Figures 1 and 2). In both molecules of the title compound, the bond lengths and angles are within normal ranges (Allen et al., 1987). The molecules assemble into an infinite two-dimensional ribbon through intermolecular N—H···O, O—H···N and C—H···O hydrogen bonds (Table 1 and Fig. 3). In each molecule there is an intramolecular N—H···O hydrogen bond resulting in a five-membered ring (Table 2 and Fig. 1 and 2).For general background to the use of phenylacetate derivatives as intermediates for the rational design of new chemotherapeutic agents, see: Xiao, Fang et al. (2008); Xiao, Lv et al. (2008). For the preparation of the title compound, see: Xiao et al. 2010. For bond-length data, see: Allen et al. (1987).
Data collection: SMART (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); 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: SHELXL97 (Sheldrick, 2008).Fig. 1. A view of the molecule (1) of the title compound, showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. | |
Fig. 2. A view of the molecule (2) of the title compound, showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. | |
Fig. 3. A unit cell packing of the title compound showing intermolecular N—H···O and O—H···N hydrogen bonds by dashed lines. |
C10H13NO3 | Z = 4 |
Mr = 195.21 | F(000) = 416 |
Triclinic, P1 | Dx = 1.293 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.5940 (17) Å | Cell parameters from 2097 reflections |
b = 10.142 (2) Å | θ = 2.4–24.9° |
c = 12.043 (2) Å | µ = 0.10 mm−1 |
α = 98.23 (3)° | T = 293 K |
β = 104.96 (3)° | Block, colorless |
γ = 90.41 (3)° | 0.30 × 0.10 × 0.10 mm |
V = 1002.6 (3) Å3 |
Bruker SMART APEX CCD diffractometer | 3598 independent reflections |
Radiation source: fine-focus sealed tube | 2121 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
φ and ω scans | θmax = 25.2°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −10→9 |
Tmin = 0.972, Tmax = 0.991 | k = −12→12 |
3857 measured reflections | l = 0→14 |
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)] = 0.079 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.213 | H-atom parameters constrained |
S = 1.09 | w = 1/[σ2(Fo2) + (0.0847P)2 + 0.7608P] where P = (Fo2 + 2Fc2)/3 |
3598 reflections | (Δ/σ)max < 0.001 |
247 parameters | Δρmax = 0.32 e Å−3 |
0 restraints | Δρmin = −0.32 e Å−3 |
C10H13NO3 | γ = 90.41 (3)° |
Mr = 195.21 | V = 1002.6 (3) Å3 |
Triclinic, P1 | Z = 4 |
a = 8.5940 (17) Å | Mo Kα radiation |
b = 10.142 (2) Å | µ = 0.10 mm−1 |
c = 12.043 (2) Å | T = 293 K |
α = 98.23 (3)° | 0.30 × 0.10 × 0.10 mm |
β = 104.96 (3)° |
Bruker SMART APEX CCD diffractometer | 3598 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2121 reflections with I > 2σ(I) |
Tmin = 0.972, Tmax = 0.991 | Rint = 0.030 |
3857 measured reflections |
R[F2 > 2σ(F2)] = 0.079 | 0 restraints |
wR(F2) = 0.213 | H-atom parameters constrained |
S = 1.09 | Δρmax = 0.32 e Å−3 |
3598 reflections | Δρmin = −0.32 e Å−3 |
247 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 | 1.0536 (4) | 0.8579 (3) | 0.9060 (3) | 0.0860 (11) | |
O2 | 1.2035 (3) | 0.7342 (3) | 0.8128 (3) | 0.0690 (9) | |
O3 | 0.9659 (3) | 0.2198 (3) | 0.4667 (3) | 0.0611 (8) | |
H3A | 1.0353 | 0.1671 | 0.4878 | 0.092* | |
N1 | 0.7667 (5) | 0.3994 (3) | 0.4283 (3) | 0.063 | |
H1A | 0.6993 | 0.4586 | 0.4059 | 0.075* | |
H1B | 0.7774 | 0.3314 | 0.3797 | 0.075* | |
C1 | 1.1307 (7) | 1.0449 (5) | 0.8320 (6) | 0.102 (2) | |
H1C | 1.2096 | 1.1172 | 0.8466 | 0.153* | |
H1D | 1.0260 | 1.0801 | 0.8263 | 0.153* | |
H1E | 1.1306 | 0.9893 | 0.7604 | 0.153* | |
C2 | 1.1679 (6) | 0.9708 (5) | 0.9218 (5) | 0.0779 (15) | |
H2A | 1.1697 | 1.0281 | 0.9939 | 0.093* | |
H2B | 1.2750 | 0.9377 | 0.9283 | 0.093* | |
C3 | 1.0796 (5) | 0.7484 (4) | 0.8404 (4) | 0.0513 (10) | |
C4 | 0.9484 (5) | 0.6448 (4) | 0.8233 (4) | 0.0655 (13) | |
H4A | 0.8454 | 0.6861 | 0.8036 | 0.079* | |
H4B | 0.9581 | 0.6112 | 0.8962 | 0.079* | |
C5 | 0.9492 (5) | 0.5276 (4) | 0.7290 (4) | 0.0500 (10) | |
C6 | 1.0634 (5) | 0.4308 (4) | 0.7533 (4) | 0.0514 (10) | |
H6A | 1.1342 | 0.4357 | 0.8267 | 0.062* | |
C7 | 1.0690 (5) | 0.3282 (4) | 0.6664 (4) | 0.0531 (10) | |
H7A | 1.1455 | 0.2644 | 0.6825 | 0.064* | |
C8 | 0.9663 (4) | 0.3164 (3) | 0.5569 (3) | 0.0430 (9) | |
C9 | 0.8494 (4) | 0.4121 (3) | 0.5322 (3) | 0.0424 (9) | |
C10 | 0.8459 (5) | 0.5164 (4) | 0.6213 (4) | 0.0498 (10) | |
H10A | 0.7697 | 0.5806 | 0.6061 | 0.060* | |
O4 | 0.3631 (3) | 0.5329 (2) | 0.1330 (2) | 0.0541 (7) | |
O5 | 0.5351 (4) | 0.6553 (3) | 0.2847 (3) | 0.0739 (10) | |
O6 | 0.4558 (4) | 1.2663 (3) | 0.4366 (3) | 0.0727 (10) | |
H6B | 0.5107 | 1.3115 | 0.4082 | 0.087* | |
N2 | 0.2886 (4) | 1.1022 (4) | 0.5184 (3) | 0.0628 (10) | |
H2C | 0.2324 | 1.0498 | 0.5447 | 0.075* | |
H2D | 0.3165 | 1.1816 | 0.5548 | 0.075* | |
C11 | 0.4060 (6) | 0.3167 (4) | 0.0431 (4) | 0.0734 (14) | |
H11A | 0.4722 | 0.2412 | 0.0527 | 0.110* | |
H11B | 0.4119 | 0.3505 | −0.0263 | 0.110* | |
H11C | 0.2963 | 0.2901 | 0.0369 | 0.110* | |
C12 | 0.4636 (5) | 0.4217 (4) | 0.1442 (4) | 0.0642 (12) | |
H12A | 0.4625 | 0.3866 | 0.2148 | 0.077* | |
H12B | 0.5737 | 0.4501 | 0.1496 | 0.077* | |
C13 | 0.4116 (5) | 0.6431 (4) | 0.2094 (3) | 0.0465 (9) | |
C14 | 0.2909 (5) | 0.7474 (4) | 0.1919 (4) | 0.0570 (11) | |
H14A | 0.1973 | 0.7178 | 0.2141 | 0.068* | |
H14B | 0.2568 | 0.7527 | 0.1094 | 0.068* | |
C15 | 0.3408 (4) | 0.8849 (3) | 0.2550 (3) | 0.0454 (9) | |
C16 | 0.4443 (5) | 0.9678 (4) | 0.2213 (4) | 0.0559 (11) | |
H16A | 0.4852 | 0.9373 | 0.1584 | 0.067* | |
C17 | 0.4866 (5) | 1.0952 (4) | 0.2809 (3) | 0.0508 (10) | |
H17A | 0.5512 | 1.1512 | 0.2548 | 0.061* | |
C18 | 0.4349 (4) | 1.1409 (3) | 0.3781 (3) | 0.0374 (8) | |
C19 | 0.3347 (4) | 1.0583 (3) | 0.4161 (3) | 0.0403 (8) | |
C20 | 0.2923 (4) | 0.9312 (3) | 0.3547 (3) | 0.0443 (9) | |
H20A | 0.2290 | 0.8746 | 0.3812 | 0.053* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.090 (2) | 0.0554 (19) | 0.127 (3) | −0.0022 (17) | 0.072 (2) | −0.0197 (19) |
O2 | 0.0548 (18) | 0.0541 (18) | 0.104 (2) | 0.0050 (14) | 0.0410 (17) | −0.0067 (16) |
O3 | 0.0565 (17) | 0.0441 (16) | 0.092 (2) | 0.0117 (13) | 0.0403 (15) | 0.0021 (15) |
N1 | 0.082 | 0.039 | 0.083 | −0.002 | 0.049 | 0.011 |
C1 | 0.092 (4) | 0.067 (3) | 0.132 (5) | −0.005 (3) | −0.001 (4) | 0.023 (4) |
C2 | 0.080 (3) | 0.054 (3) | 0.099 (4) | −0.001 (3) | 0.036 (3) | −0.014 (3) |
C3 | 0.051 (2) | 0.045 (2) | 0.063 (3) | 0.0007 (18) | 0.030 (2) | −0.0049 (19) |
C4 | 0.057 (3) | 0.056 (3) | 0.093 (3) | 0.000 (2) | 0.048 (2) | −0.011 (2) |
C5 | 0.050 (2) | 0.042 (2) | 0.072 (3) | 0.0019 (18) | 0.044 (2) | 0.0027 (19) |
C6 | 0.042 (2) | 0.056 (3) | 0.060 (2) | 0.0005 (18) | 0.0209 (18) | 0.008 (2) |
C7 | 0.042 (2) | 0.051 (2) | 0.077 (3) | 0.0067 (17) | 0.032 (2) | 0.015 (2) |
C8 | 0.045 (2) | 0.0288 (18) | 0.064 (3) | −0.0039 (15) | 0.0325 (19) | 0.0027 (17) |
C9 | 0.043 (2) | 0.039 (2) | 0.054 (2) | −0.0008 (16) | 0.0248 (17) | 0.0128 (17) |
C10 | 0.052 (2) | 0.035 (2) | 0.077 (3) | 0.0142 (17) | 0.042 (2) | 0.0121 (19) |
O4 | 0.0550 (16) | 0.0347 (14) | 0.0755 (19) | 0.0100 (12) | 0.0259 (14) | 0.0012 (13) |
O5 | 0.0589 (19) | 0.0487 (17) | 0.099 (2) | 0.0180 (14) | 0.0063 (18) | −0.0132 (16) |
O6 | 0.103 (2) | 0.0329 (15) | 0.098 (2) | −0.0021 (15) | 0.063 (2) | −0.0031 (15) |
N2 | 0.072 (2) | 0.054 (2) | 0.080 (3) | 0.0021 (17) | 0.052 (2) | 0.0063 (18) |
C11 | 0.086 (3) | 0.048 (3) | 0.103 (4) | 0.012 (2) | 0.064 (3) | −0.007 (2) |
C12 | 0.061 (3) | 0.049 (2) | 0.090 (3) | 0.020 (2) | 0.031 (2) | 0.012 (2) |
C13 | 0.049 (2) | 0.036 (2) | 0.058 (2) | −0.0049 (17) | 0.0269 (19) | −0.0070 (17) |
C14 | 0.046 (2) | 0.044 (2) | 0.077 (3) | −0.0004 (18) | 0.016 (2) | −0.006 (2) |
C15 | 0.042 (2) | 0.0305 (19) | 0.068 (3) | 0.0096 (15) | 0.0244 (18) | 0.0029 (17) |
C16 | 0.054 (2) | 0.052 (2) | 0.077 (3) | 0.0091 (19) | 0.042 (2) | 0.010 (2) |
C17 | 0.059 (2) | 0.040 (2) | 0.065 (3) | 0.0037 (18) | 0.034 (2) | 0.0120 (19) |
C18 | 0.0343 (18) | 0.0245 (17) | 0.053 (2) | 0.0034 (13) | 0.0115 (15) | 0.0042 (15) |
C19 | 0.0350 (18) | 0.038 (2) | 0.055 (2) | 0.0165 (15) | 0.0225 (16) | 0.0106 (17) |
C20 | 0.044 (2) | 0.0311 (19) | 0.060 (2) | −0.0016 (15) | 0.0172 (18) | 0.0090 (17) |
O1—C3 | 1.324 (5) | O4—C13 | 1.331 (4) |
O1—C2 | 1.462 (6) | O4—C12 | 1.426 (5) |
O2—C3 | 1.199 (4) | O5—C13 | 1.198 (5) |
O3—C8 | 1.353 (4) | O6—C18 | 1.350 (4) |
O3—H3A | 0.8200 | O6—H6B | 0.8200 |
N1—C9 | 1.257 (5) | N2—C19 | 1.405 (5) |
N1—H1A | 0.8600 | N2—H2C | 0.8600 |
N1—H1B | 0.8600 | N2—H2D | 0.8600 |
C1—C2 | 1.376 (7) | C11—C12 | 1.474 (6) |
C1—H1C | 0.9600 | C11—H11A | 0.9600 |
C1—H1D | 0.9600 | C11—H11B | 0.9600 |
C1—H1E | 0.9600 | C11—H11C | 0.9600 |
C2—H2A | 0.9700 | C12—H12A | 0.9700 |
C2—H2B | 0.9700 | C12—H12B | 0.9700 |
C3—C4 | 1.489 (5) | C13—C14 | 1.485 (6) |
C4—C5 | 1.523 (5) | C14—C15 | 1.491 (5) |
C4—H4A | 0.9700 | C14—H14A | 0.9700 |
C4—H4B | 0.9700 | C14—H14B | 0.9700 |
C5—C10 | 1.359 (6) | C15—C20 | 1.391 (5) |
C5—C6 | 1.400 (6) | C15—C16 | 1.391 (5) |
C6—C7 | 1.377 (5) | C16—C17 | 1.382 (5) |
C6—H6A | 0.9300 | C16—H16A | 0.9300 |
C7—C8 | 1.372 (6) | C17—C18 | 1.379 (5) |
C7—H7A | 0.9300 | C17—H17A | 0.9300 |
C8—C9 | 1.408 (5) | C18—C19 | 1.398 (5) |
C9—C10 | 1.401 (5) | C19—C20 | 1.386 (5) |
C10—H10A | 0.9300 | C20—H20A | 0.9300 |
C3—O1—C2 | 116.0 (3) | C13—O4—C12 | 117.4 (3) |
C8—O3—H3A | 109.5 | C18—O6—H6B | 109.5 |
C9—N1—H1A | 120.0 | C19—N2—H2C | 120.0 |
C9—N1—H1B | 120.0 | C19—N2—H2D | 120.0 |
H1A—N1—H1B | 120.0 | H2C—N2—H2D | 120.0 |
C2—C1—H1C | 109.5 | C12—C11—H11A | 109.5 |
C2—C1—H1D | 109.5 | C12—C11—H11B | 109.5 |
H1C—C1—H1D | 109.5 | H11A—C11—H11B | 109.5 |
C2—C1—H1E | 109.5 | C12—C11—H11C | 109.5 |
H1C—C1—H1E | 109.5 | H11A—C11—H11C | 109.5 |
H1D—C1—H1E | 109.5 | H11B—C11—H11C | 109.5 |
C1—C2—O1 | 113.0 (5) | O4—C12—C11 | 110.2 (4) |
C1—C2—H2A | 109.0 | O4—C12—H12A | 109.6 |
O1—C2—H2A | 109.0 | C11—C12—H12A | 109.6 |
C1—C2—H2B | 109.0 | O4—C12—H12B | 109.6 |
O1—C2—H2B | 109.0 | C11—C12—H12B | 109.6 |
H2A—C2—H2B | 107.8 | H12A—C12—H12B | 108.1 |
O2—C3—O1 | 121.8 (4) | O5—C13—O4 | 124.2 (4) |
O2—C3—C4 | 126.7 (4) | O5—C13—C14 | 124.3 (3) |
O1—C3—C4 | 110.9 (3) | O4—C13—C14 | 111.5 (3) |
C3—C4—C5 | 114.2 (3) | C13—C14—C15 | 117.7 (3) |
C3—C4—H4A | 108.7 | C13—C14—H14A | 107.9 |
C5—C4—H4A | 108.7 | C15—C14—H14A | 107.9 |
C3—C4—H4B | 108.7 | C13—C14—H14B | 107.9 |
C5—C4—H4B | 108.7 | C15—C14—H14B | 107.9 |
H4A—C4—H4B | 107.6 | H14A—C14—H14B | 107.2 |
C10—C5—C6 | 119.1 (4) | C20—C15—C16 | 117.7 (3) |
C10—C5—C4 | 122.0 (4) | C20—C15—C14 | 120.4 (3) |
C6—C5—C4 | 118.8 (4) | C16—C15—C14 | 121.8 (4) |
C7—C6—C5 | 118.8 (4) | C17—C16—C15 | 120.3 (4) |
C7—C6—H6A | 120.6 | C17—C16—H16A | 119.8 |
C5—C6—H6A | 120.6 | C15—C16—H16A | 119.8 |
C8—C7—C6 | 122.6 (4) | C18—C17—C16 | 121.2 (4) |
C8—C7—H7A | 118.7 | C18—C17—H17A | 119.4 |
C6—C7—H7A | 118.7 | C16—C17—H17A | 119.4 |
O3—C8—C7 | 126.1 (4) | O6—C18—C17 | 126.4 (3) |
O3—C8—C9 | 114.9 (4) | O6—C18—C19 | 113.6 (3) |
C7—C8—C9 | 119.0 (3) | C17—C18—C19 | 119.6 (3) |
N1—C9—C10 | 126.8 (4) | C20—C19—C18 | 118.4 (3) |
N1—C9—C8 | 115.3 (4) | C20—C19—N2 | 121.9 (3) |
C10—C9—C8 | 117.7 (4) | C18—C19—N2 | 119.6 (3) |
C5—C10—C9 | 122.7 (4) | C19—C20—C15 | 122.6 (3) |
C5—C10—H10A | 118.6 | C19—C20—H20A | 118.7 |
C9—C10—H10A | 118.6 | C15—C20—H20A | 118.7 |
C3—O1—C2—C1 | 83.7 (6) | C13—O4—C12—C11 | −171.1 (3) |
C2—O1—C3—O2 | 12.7 (7) | C12—O4—C13—O5 | 1.6 (6) |
C2—O1—C3—C4 | −175.5 (4) | C12—O4—C13—C14 | −176.5 (3) |
O2—C3—C4—C5 | −21.0 (7) | O5—C13—C14—C15 | 13.4 (6) |
O1—C3—C4—C5 | 167.7 (4) | O4—C13—C14—C15 | −168.5 (3) |
C3—C4—C5—C10 | −101.7 (5) | C13—C14—C15—C20 | −102.0 (5) |
C3—C4—C5—C6 | 76.3 (5) | C13—C14—C15—C16 | 74.0 (5) |
C10—C5—C6—C7 | 1.0 (5) | C20—C15—C16—C17 | −4.7 (6) |
C4—C5—C6—C7 | −177.0 (3) | C14—C15—C16—C17 | 179.2 (4) |
C5—C6—C7—C8 | −0.5 (6) | C15—C16—C17—C18 | 3.5 (6) |
C6—C7—C8—O3 | 179.0 (3) | C16—C17—C18—O6 | −173.4 (4) |
C6—C7—C8—C9 | −0.5 (5) | C16—C17—C18—C19 | −1.5 (6) |
O3—C8—C9—N1 | −3.8 (4) | O6—C18—C19—C20 | 173.8 (3) |
C7—C8—C9—N1 | 175.7 (3) | C17—C18—C19—C20 | 0.9 (5) |
O3—C8—C9—C10 | −178.7 (3) | O6—C18—C19—N2 | −10.3 (5) |
C7—C8—C9—C10 | 0.8 (5) | C17—C18—C19—N2 | 176.8 (3) |
C6—C5—C10—C9 | −0.6 (5) | C18—C19—C20—C15 | −2.4 (5) |
C4—C5—C10—C9 | 177.3 (3) | N2—C19—C20—C15 | −178.2 (4) |
N1—C9—C10—C5 | −174.5 (4) | C16—C15—C20—C19 | 4.2 (6) |
C8—C9—C10—C5 | −0.3 (5) | C14—C15—C20—C19 | −179.6 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1B···O2i | 0.86 | 2.37 | 3.097 (5) | 143 |
N2—H2D···O5ii | 0.86 | 2.42 | 3.222 (5) | 155 |
O3—H3A···N2iii | 0.82 | 2.23 | 2.978 (5) | 152 |
O6—H6B···N1iv | 0.82 | 2.31 | 3.015 (5) | 145 |
C10—H10A···O6ii | 0.93 | 2.49 | 3.414 (5) | 174 |
N1—H1B···O3 | 0.86 | 2.12 | 2.517 (5) | 108 |
N2—H2D···O6 | 0.86 | 2.33 | 2.641 (4) | 102 |
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) −x+1, −y+2, −z+1; (iii) x+1, y−1, z; (iv) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C10H13NO3 |
Mr | 195.21 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 8.5940 (17), 10.142 (2), 12.043 (2) |
α, β, γ (°) | 98.23 (3), 104.96 (3), 90.41 (3) |
V (Å3) | 1002.6 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.30 × 0.10 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.972, 0.991 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3857, 3598, 2121 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.598 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.079, 0.213, 1.09 |
No. of reflections | 3598 |
No. of parameters | 247 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.32, −0.32 |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1B···O2i | 0.86 | 2.37 | 3.097 (5) | 143.1 |
N2—H2D···O5ii | 0.86 | 2.42 | 3.222 (5) | 154.6 |
O3—H3A···N2iii | 0.82 | 2.23 | 2.978 (5) | 151.5 |
O6—H6B···N1iv | 0.82 | 2.31 | 3.015 (5) | 144.6 |
C10—H10A···O6ii | 0.93 | 2.49 | 3.414 (5) | 174.0 |
N1—H1B···O3 | 0.86 | 2.12 | 2.517 (5) | 107.6 |
N2—H2D···O6 | 0.86 | 2.33 | 2.641 (4) | 101.8 |
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) −x+1, −y+2, −z+1; (iii) x+1, y−1, z; (iv) x, y+1, z. |
Acknowledgements
The work was financed by the Scientific Research Fund of Hunan Provincial Education Department (Project 09B083) of China, the Undergraduate Innovative Test Program (JSU-CX-2009–42) of Jishou University, China and by a grant (No. JSDXKYZZ0801) from Jishou University for talent introduction, China.
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
Bruker (2007). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Xiao, Z.-P., Fang, F.-Q., Li, H.-Q., Xue, J.-Y., Zheng, Y. & Zhu, H.-L. (2008). Eur. J. Med. Chem. 43, 1828–1836. Web of Science CSD CrossRef PubMed CAS Google Scholar
Xiao, Z.-P., Lv, P.-C., Xu, S.-P., Zhu, T.-T. & Zhu, H.-L. (2008). Chem. Med. Chem. 3, 1516–1519. Web of Science CrossRef PubMed CAS Google Scholar
Xiao, Z.-P., Wang, Y.-C., Ou, G.-Y., Wu, J., Luo, T. & Yi, S.-F. (2010). Synth. Commun. 40, 661–665. Web of Science CrossRef CAS Google Scholar
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.
Derivatives of phenylacetate are key intermates for the rational design of new chemotherapeutic agents such as antibacterials (Xiao, Fang, et al. 2008) and anticancers (Xiao, Lv, et al. 2008). As a part of our research on pharmoceutically active 4-hydroxy-3-phenylfuran-2(5H)-ones, we have synthesized the title compound and herein we report its crystal structure.
The crystal structure contains two crystallographically independent molecules in an asymmetric unit of the title compound with different conformations of the ethoxy carbonyl groups. The terminal torsion angles C1—C2—O1—C3 in molecule (1) and C11—C12—O4—C13 in molecule (2) are 83.6 (6) and -171.1 (3)° resulting in twisted and straight chian conformations, respectively (Figures 1 and 2). In both molecules of the title compound, the bond lengths and angles are within normal ranges (Allen et al., 1987). The molecules assemble into an infinite two-dimensional ribbon through intermolecular N—H···O, O—H···N and C—H···O hydrogen bonds (Table 1 and Fig. 3). In each molecule there is an intramolecular N—H···O hydrogen bond resulting in a five-membered ring (Table 2 and Fig. 1 and 2).