organic compounds
4-Chloro-5-[(5,5-dimethyl-4,5-dihydroisoxazol-3-yl)sulfonylmethyl]-3-methyl-1-(2,2,2-trifluoroethyl)-1H-pyrazole
aKey Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
*Correspondence e-mail: jning502@yahoo.com.cn
The molecule of the title compound, C12H15ClF3N3O3S, is twisted, as indicated by the C—S—C—C torsion angle of 66.00 (18)° for the atoms linking the ring systems. An intramolecular C—H⋯F short contact occurs. In the crystal, non-classical C—H⋯O interactions, one of which has a short H⋯O contact of 2.28 Å, link the molecules.
Related literature
For background to pyrazoles and their pharmacological and pharmaceutical applications, see: Hirai et al. (2002); Shiga et al. (2003); Ohno et al. (2004); Sabbagh et al. (2009); Sridhar et al. (2004); Zheng et al. (2009).
Experimental
Crystal data
|
Refinement
|
Data collection: RAPID-AUTO (Rigaku, 2001); cell RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536809038471/hb5103sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809038471/hb5103Isup2.hkl
The title compound (0.2 g) was dissolved in acetone (50 ml) at room temperature. Colourless blocks of (I) were obtained through slow evaporation after two weeks.
The H atoms were placed at calculated positions, with C—H = 0.93–0.98 Å, and refined as riding with Uiso(H) = 1.2–1.5Ueq(C).
Data collection: RAPID-AUTO (Rigaku, 2001); cell
RAPID-AUTO (Rigaku, 2001); data reduction: RAPID-AUTO (Rigaku, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound, showing 50% probability displacement ellipsoids and the atom-numbering scheme. |
C12H15ClF3N3O3S | F(000) = 768 |
Mr = 373.78 | Dx = 1.561 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54178 Å |
Hall symbol: -P 2yn | Cell parameters from 11348 reflections |
a = 16.034 (3) Å | θ = 3.2–68.2° |
b = 5.4319 (11) Å | µ = 3.83 mm−1 |
c = 19.069 (4) Å | T = 173 K |
β = 106.71 (3)° | Block, colourless |
V = 1590.7 (6) Å3 | 0.39 × 0.26 × 0.25 mm |
Z = 4 |
Rigaku R-AXIS RAPID IP diffractometer | 2891 independent reflections |
Radiation source: rotating anode | 2568 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.073 |
ω scans | θmax = 68.2°, θmin = 3.2° |
Absorption correction: numerical (NUMABS; Higashi, 2003) | h = −16→19 |
Tmin = 0.317, Tmax = 0.448 | k = −6→5 |
11348 measured reflections | l = −22→20 |
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)] = 0.040 | H-atom parameters constrained |
wR(F2) = 0.097 | w = 1/[σ2(Fo2) + (0.0203P)2 + 1.0073P] where P = (Fo2 + 2Fc2)/3 |
S = 1.09 | (Δ/σ)max < 0.001 |
2891 reflections | Δρmax = 0.39 e Å−3 |
212 parameters | Δρmin = −0.36 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: 0.0054 (3) |
C12H15ClF3N3O3S | V = 1590.7 (6) Å3 |
Mr = 373.78 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 16.034 (3) Å | µ = 3.83 mm−1 |
b = 5.4319 (11) Å | T = 173 K |
c = 19.069 (4) Å | 0.39 × 0.26 × 0.25 mm |
β = 106.71 (3)° |
Rigaku R-AXIS RAPID IP diffractometer | 2891 independent reflections |
Absorption correction: numerical (NUMABS; Higashi, 2003) | 2568 reflections with I > 2σ(I) |
Tmin = 0.317, Tmax = 0.448 | Rint = 0.073 |
11348 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.09 | Δρmax = 0.39 e Å−3 |
2891 reflections | Δρmin = −0.36 e Å−3 |
212 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 | ||
Cl1 | 0.44152 (4) | 0.93466 (11) | 0.09341 (4) | 0.03950 (19) | |
S1 | 0.36881 (3) | 0.46279 (10) | 0.24281 (3) | 0.02353 (17) | |
F1 | 0.10868 (10) | 0.5476 (3) | 0.06789 (10) | 0.0610 (5) | |
F2 | 0.05756 (9) | 0.1893 (3) | 0.03398 (9) | 0.0584 (5) | |
F3 | 0.09944 (9) | 0.4206 (3) | −0.04032 (8) | 0.0519 (5) | |
O1 | 0.35709 (10) | 0.2075 (3) | 0.22345 (9) | 0.0320 (4) | |
O2 | 0.34961 (10) | 0.5475 (3) | 0.30760 (9) | 0.0355 (4) | |
O3 | 0.60616 (9) | 0.5020 (3) | 0.23839 (9) | 0.0295 (4) | |
N1 | 0.29777 (12) | 0.3998 (4) | −0.01380 (10) | 0.0308 (5) | |
N2 | 0.27450 (11) | 0.4064 (3) | 0.04952 (10) | 0.0252 (4) | |
N3 | 0.52262 (11) | 0.4070 (3) | 0.22312 (10) | 0.0273 (4) | |
C1 | 0.37126 (13) | 0.6956 (4) | 0.06043 (13) | 0.0286 (5) | |
C2 | 0.35682 (14) | 0.5758 (5) | −0.00755 (13) | 0.0311 (5) | |
C3 | 0.31789 (13) | 0.5852 (4) | 0.09606 (12) | 0.0238 (5) | |
C4 | 0.39748 (17) | 0.6278 (6) | −0.06716 (14) | 0.0478 (7) | |
H4A | 0.3737 | 0.5148 | −0.1081 | 0.072* | |
H4B | 0.4606 | 0.6049 | −0.0486 | 0.072* | |
H4C | 0.3848 | 0.7979 | −0.0840 | 0.072* | |
C5 | 0.20776 (14) | 0.2398 (4) | 0.05769 (12) | 0.0277 (5) | |
H5A | 0.2192 | 0.1968 | 0.1101 | 0.033* | |
H5B | 0.2102 | 0.0861 | 0.0304 | 0.033* | |
C6 | 0.11822 (15) | 0.3496 (5) | 0.03000 (14) | 0.0358 (6) | |
C7 | 0.30537 (13) | 0.6436 (4) | 0.16871 (12) | 0.0252 (5) | |
H7A | 0.2431 | 0.6211 | 0.1654 | 0.030* | |
H7B | 0.3197 | 0.8193 | 0.1798 | 0.030* | |
C8 | 0.47791 (13) | 0.5464 (4) | 0.25218 (11) | 0.0217 (5) | |
C9 | 0.61812 (13) | 0.6994 (4) | 0.29469 (12) | 0.0262 (5) | |
C10 | 0.52374 (13) | 0.7681 (4) | 0.29159 (13) | 0.0280 (5) | |
H10A | 0.5161 | 0.7844 | 0.3411 | 0.034* | |
H10B | 0.5045 | 0.9214 | 0.2635 | 0.034* | |
C11 | 0.66650 (17) | 0.5831 (5) | 0.36693 (14) | 0.0415 (7) | |
H11A | 0.7212 | 0.5121 | 0.3632 | 0.062* | |
H11B | 0.6306 | 0.4531 | 0.3790 | 0.062* | |
H11C | 0.6791 | 0.7087 | 0.4055 | 0.062* | |
C12 | 0.66893 (16) | 0.9029 (5) | 0.27166 (17) | 0.0426 (7) | |
H12A | 0.7249 | 0.8382 | 0.2688 | 0.064* | |
H12B | 0.6791 | 1.0365 | 0.3077 | 0.064* | |
H12C | 0.6357 | 0.9658 | 0.2236 | 0.064* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0318 (3) | 0.0362 (4) | 0.0491 (4) | −0.0112 (2) | 0.0094 (3) | 0.0061 (3) |
S1 | 0.0209 (3) | 0.0256 (3) | 0.0244 (3) | −0.0035 (2) | 0.0071 (2) | −0.0022 (2) |
F1 | 0.0316 (8) | 0.0694 (12) | 0.0759 (13) | 0.0110 (8) | 0.0057 (8) | −0.0260 (10) |
F2 | 0.0300 (8) | 0.0797 (13) | 0.0579 (10) | −0.0223 (8) | 0.0005 (7) | 0.0141 (9) |
F3 | 0.0366 (8) | 0.0723 (12) | 0.0408 (9) | 0.0071 (8) | 0.0018 (7) | 0.0211 (8) |
O1 | 0.0305 (9) | 0.0225 (9) | 0.0404 (10) | −0.0064 (7) | 0.0060 (7) | −0.0002 (7) |
O2 | 0.0297 (9) | 0.0528 (12) | 0.0271 (9) | −0.0028 (8) | 0.0132 (7) | −0.0060 (8) |
O3 | 0.0204 (8) | 0.0306 (9) | 0.0379 (10) | −0.0020 (6) | 0.0091 (7) | −0.0091 (7) |
N1 | 0.0277 (10) | 0.0423 (12) | 0.0227 (10) | 0.0014 (9) | 0.0077 (8) | 0.0003 (9) |
N2 | 0.0234 (9) | 0.0295 (10) | 0.0227 (10) | −0.0022 (8) | 0.0066 (8) | 0.0004 (8) |
N3 | 0.0219 (9) | 0.0281 (10) | 0.0308 (10) | −0.0018 (8) | 0.0060 (8) | −0.0038 (8) |
C1 | 0.0193 (11) | 0.0307 (13) | 0.0338 (13) | −0.0010 (9) | 0.0047 (9) | 0.0068 (10) |
C2 | 0.0226 (11) | 0.0424 (14) | 0.0279 (13) | 0.0016 (10) | 0.0068 (10) | 0.0081 (10) |
C3 | 0.0207 (10) | 0.0237 (11) | 0.0262 (12) | 0.0025 (8) | 0.0053 (9) | 0.0014 (9) |
C4 | 0.0345 (14) | 0.079 (2) | 0.0333 (15) | −0.0023 (14) | 0.0147 (11) | 0.0113 (14) |
C5 | 0.0269 (11) | 0.0280 (12) | 0.0261 (12) | −0.0059 (9) | 0.0043 (9) | 0.0015 (9) |
C6 | 0.0242 (12) | 0.0444 (15) | 0.0368 (14) | −0.0086 (11) | 0.0054 (10) | 0.0017 (12) |
C7 | 0.0212 (10) | 0.0238 (11) | 0.0309 (12) | 0.0018 (9) | 0.0080 (9) | −0.0027 (9) |
C8 | 0.0198 (10) | 0.0211 (11) | 0.0231 (11) | 0.0010 (8) | 0.0043 (9) | −0.0008 (8) |
C9 | 0.0221 (11) | 0.0208 (11) | 0.0335 (13) | −0.0012 (9) | 0.0048 (9) | −0.0038 (9) |
C10 | 0.0221 (11) | 0.0248 (12) | 0.0365 (13) | −0.0030 (9) | 0.0076 (9) | −0.0079 (10) |
C11 | 0.0348 (14) | 0.0444 (16) | 0.0367 (15) | 0.0013 (11) | −0.0034 (11) | −0.0013 (12) |
C12 | 0.0295 (13) | 0.0306 (14) | 0.070 (2) | −0.0011 (10) | 0.0186 (13) | 0.0039 (13) |
Cl1—C1 | 1.716 (2) | C4—H4B | 0.9800 |
S1—O2 | 1.4324 (16) | C4—H4C | 0.9800 |
S1—O1 | 1.4333 (16) | C5—C6 | 1.503 (3) |
S1—C8 | 1.766 (2) | C5—H5A | 0.9900 |
S1—C7 | 1.780 (2) | C5—H5B | 0.9900 |
F1—C6 | 1.329 (3) | C7—H7A | 0.9900 |
F2—C6 | 1.324 (3) | C7—H7B | 0.9900 |
F3—C6 | 1.344 (3) | C8—C10 | 1.496 (3) |
O3—N3 | 1.386 (2) | C9—C12 | 1.511 (3) |
O3—C9 | 1.490 (3) | C9—C11 | 1.511 (3) |
N1—C2 | 1.327 (3) | C9—C10 | 1.543 (3) |
N1—N2 | 1.363 (2) | C10—H10A | 0.9900 |
N2—C3 | 1.364 (3) | C10—H10B | 0.9900 |
N2—C5 | 1.444 (3) | C11—H11A | 0.9800 |
N3—C8 | 1.274 (3) | C11—H11B | 0.9800 |
C1—C3 | 1.374 (3) | C11—H11C | 0.9800 |
C1—C2 | 1.409 (3) | C12—H12A | 0.9800 |
C2—C4 | 1.491 (3) | C12—H12B | 0.9800 |
C3—C7 | 1.490 (3) | C12—H12C | 0.9800 |
C4—H4A | 0.9800 | ||
O2—S1—O1 | 119.23 (10) | F2—C6—C5 | 111.2 (2) |
O2—S1—C8 | 106.40 (10) | F1—C6—C5 | 112.21 (19) |
O1—S1—C8 | 109.12 (10) | F3—C6—C5 | 112.4 (2) |
O2—S1—C7 | 106.96 (10) | C3—C7—S1 | 114.93 (15) |
O1—S1—C7 | 109.07 (10) | C3—C7—H7A | 108.5 |
C8—S1—C7 | 105.17 (10) | S1—C7—H7A | 108.5 |
N3—O3—C9 | 109.60 (15) | C3—C7—H7B | 108.5 |
C2—N1—N2 | 105.74 (19) | S1—C7—H7B | 108.5 |
N1—N2—C3 | 112.16 (18) | H7A—C7—H7B | 107.5 |
N1—N2—C5 | 118.62 (18) | N3—C8—C10 | 116.13 (19) |
C3—N2—C5 | 129.16 (19) | N3—C8—S1 | 117.92 (16) |
C8—N3—O3 | 108.56 (17) | C10—C8—S1 | 125.96 (16) |
C3—C1—C2 | 107.0 (2) | O3—C9—C12 | 106.57 (19) |
C3—C1—Cl1 | 125.86 (19) | O3—C9—C11 | 106.36 (18) |
C2—C1—Cl1 | 127.13 (18) | C12—C9—C11 | 113.1 (2) |
N1—C2—C1 | 109.9 (2) | O3—C9—C10 | 103.00 (16) |
N1—C2—C4 | 121.7 (2) | C12—C9—C10 | 114.63 (19) |
C1—C2—C4 | 128.5 (2) | C11—C9—C10 | 112.1 (2) |
N2—C3—C1 | 105.2 (2) | C8—C10—C9 | 99.16 (17) |
N2—C3—C7 | 125.2 (2) | C8—C10—H10A | 111.9 |
C1—C3—C7 | 129.5 (2) | C9—C10—H10A | 111.9 |
C2—C4—H4A | 109.5 | C8—C10—H10B | 111.9 |
C2—C4—H4B | 109.5 | C9—C10—H10B | 111.9 |
H4A—C4—H4B | 109.5 | H10A—C10—H10B | 109.6 |
C2—C4—H4C | 109.5 | C9—C11—H11A | 109.5 |
H4A—C4—H4C | 109.5 | C9—C11—H11B | 109.5 |
H4B—C4—H4C | 109.5 | H11A—C11—H11B | 109.5 |
N2—C5—C6 | 112.07 (19) | C9—C11—H11C | 109.5 |
N2—C5—H5A | 109.2 | H11A—C11—H11C | 109.5 |
C6—C5—H5A | 109.2 | H11B—C11—H11C | 109.5 |
N2—C5—H5B | 109.2 | C9—C12—H12A | 109.5 |
C6—C5—H5B | 109.2 | C9—C12—H12B | 109.5 |
H5A—C5—H5B | 107.9 | H12A—C12—H12B | 109.5 |
F2—C6—F1 | 107.5 (2) | C9—C12—H12C | 109.5 |
F2—C6—F3 | 106.76 (19) | H12A—C12—H12C | 109.5 |
F1—C6—F3 | 106.4 (2) | H12B—C12—H12C | 109.5 |
C2—N1—N2—C3 | 0.1 (2) | N2—C3—C7—S1 | 86.0 (2) |
C2—N1—N2—C5 | 177.64 (19) | C1—C3—C7—S1 | −95.8 (3) |
C9—O3—N3—C8 | 11.2 (2) | O2—S1—C7—C3 | 178.87 (16) |
N2—N1—C2—C1 | 0.0 (2) | O1—S1—C7—C3 | −50.91 (19) |
N2—N1—C2—C4 | −179.3 (2) | C8—S1—C7—C3 | 66.00 (18) |
C3—C1—C2—N1 | −0.2 (3) | O3—N3—C8—C10 | 1.4 (3) |
Cl1—C1—C2—N1 | 180.00 (17) | O3—N3—C8—S1 | −178.52 (13) |
C3—C1—C2—C4 | 179.0 (2) | O2—S1—C8—N3 | 148.32 (18) |
Cl1—C1—C2—C4 | −0.8 (4) | O1—S1—C8—N3 | 18.5 (2) |
N1—N2—C3—C1 | −0.2 (2) | C7—S1—C8—N3 | −98.41 (19) |
C5—N2—C3—C1 | −177.4 (2) | O2—S1—C8—C10 | −31.6 (2) |
N1—N2—C3—C7 | 178.34 (19) | O1—S1—C8—C10 | −161.43 (18) |
C5—N2—C3—C7 | 1.2 (3) | C7—S1—C8—C10 | 81.7 (2) |
C2—C1—C3—N2 | 0.2 (2) | N3—O3—C9—C12 | −139.32 (18) |
Cl1—C1—C3—N2 | −179.92 (16) | N3—O3—C9—C11 | 99.8 (2) |
C2—C1—C3—C7 | −178.3 (2) | N3—O3—C9—C10 | −18.3 (2) |
Cl1—C1—C3—C7 | 1.6 (3) | N3—C8—C10—C9 | −12.4 (3) |
N1—N2—C5—C6 | −89.8 (2) | S1—C8—C10—C9 | 167.48 (16) |
C3—N2—C5—C6 | 87.3 (3) | O3—C9—C10—C8 | 17.0 (2) |
N2—C5—C6—F2 | 176.34 (19) | C12—C9—C10—C8 | 132.3 (2) |
N2—C5—C6—F1 | −63.3 (3) | C11—C9—C10—C8 | −96.9 (2) |
N2—C5—C6—F3 | 56.7 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7A···F1 | 0.99 | 2.44 | 3.229 (3) | 136 |
C4—H4A···O3i | 0.98 | 2.60 | 3.325 (3) | 131 |
C5—H5A···O2ii | 0.99 | 2.31 | 3.146 (3) | 141 |
C7—H7B···O1iii | 0.99 | 2.28 | 3.265 (3) | 171 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+1/2, y−1/2, −z+1/2; (iii) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C12H15ClF3N3O3S |
Mr | 373.78 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 173 |
a, b, c (Å) | 16.034 (3), 5.4319 (11), 19.069 (4) |
β (°) | 106.71 (3) |
V (Å3) | 1590.7 (6) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 3.83 |
Crystal size (mm) | 0.39 × 0.26 × 0.25 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID IP diffractometer |
Absorption correction | Numerical (NUMABS; Higashi, 2003) |
Tmin, Tmax | 0.317, 0.448 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11348, 2891, 2568 |
Rint | 0.073 |
(sin θ/λ)max (Å−1) | 0.602 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.097, 1.09 |
No. of reflections | 2891 |
No. of parameters | 212 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.39, −0.36 |
Computer programs: RAPID-AUTO (Rigaku, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), Mercury (Macrae et al., 2006).
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7A···F1 | 0.99 | 2.44 | 3.229 (3) | 136 |
C4—H4A···O3i | 0.98 | 2.60 | 3.325 (3) | 131 |
C5—H5A···O2ii | 0.99 | 2.31 | 3.146 (3) | 141 |
C7—H7B···O1iii | 0.99 | 2.28 | 3.265 (3) | 171 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+1/2, y−1/2, −z+1/2; (iii) x, y+1, z. |
Acknowledgements
This work was supported by the Major State Basic Research Development Program of China (No. 2010CB126106 and No. 2006CB101907), and the 863 high-tech key project of China (2006AA10A203).
References
Higashi, T. (2003). NUMABS. Rigaku Corporation, Tokyo, Japan. Google Scholar
Hirai, K., Uchida, A. & Ohno, R. (2002). Herbicide Classes in Development, edited by P. Boger, K. Hirai & K. Wakabyashi, pp. 179–289. Heidelberg: Springer-Verlag. Google Scholar
Macrae, C. F., Edgington, P. R., McCabe, P., Pidcock, E., Shields, G. P., Taylor, R., Towler, M. & van de Streek, J. (2006). J. Appl. Cryst. 39, 453–457. Web of Science CrossRef CAS IUCr Journals Google Scholar
Ohno, R., Watanabe, A., Nagaoka, M., Ueda, T., Sakurai, H., Hori, M. & Hirai, K. (2004). J. Pestic. Sci. 29, 15–26. Web of Science CrossRef CAS Google Scholar
Rigaku (2001). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sabbagh, O. I., Raraka, M. M., Ibrahim, S. M., Pannecouque, C., Andrei, G., Snoeck, R., Balzarini, J. & Rashad, A. A. (2009). Eur. J. Med. Chem. 44, 3746–3753. Web of Science PubMed Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Shiga, Y., Okada, I., Ikeda, Y., Takizawa, E. & Fukuchi, T. (2003). J. Pestic. Sci. 28, 313–314. Web of Science CrossRef CAS Google Scholar
Sridhar, R., Perumal, P. T., Etti, S., Shanmugam, G., Ponnuswamy, M. N., Prabayathy, V. R. & Mathivanan, N. (2004). Bioorg. Med. Chem. Lett. 14, 6035–6040. Web of Science CSD CrossRef PubMed CAS Google Scholar
Zheng, L. W., Wu, L. L., Zhao, B. X., Dong, W. L. & Miao, J. Y. (2009). Bioorg. Med. Chem. 17, 1957–1962. Web of Science CrossRef PubMed 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.
Pyrazoles are an important class of compounds, which possess widespread pharmacological properties in pharmaceuticals (Sridhar et al., 2004; Zheng et al., 2009; Sabbagh et al., 2009) and agrochemicals (Shiga et al., 2003; Ohno et al., 2004). Various pyrazole derivatives with potent herbicidal activity have been synthesized and some are in use as herbicides such as pyrazolate, pyrazoxyfen, benzofenap, pyraflufen-ethyl, fluazolate and pyrazosulfuron-ethyl (Hirai et al., 2002). Recently, the new title compound (I) was synthesized in our group with high herbicidal activity. The crystal structure of the title compound is shown in Fig. 1.