organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 67| Part 5| May 2011| Page o1084

Ethyl 1-(4-meth­­oxy­benz­yl)-3-p-tolyl-1H-pyrazole-5-carboxyl­ate

aHenan Chemical Industry Research Institute Co. Ltd, Zheng Zhou 450052, People's Republic of China
*Correspondence e-mail: yunman_xie@yahoo.cn

(Received 13 March 2011; accepted 2 April 2011; online 13 April 2011)

In the title compound, C21H22N2O3, the pyrazole ring makes dihedral angles of 12.93 (8) and 69.38 (8)°, respectively, with the tolyl and meth­oxy­benzyl rings.

Related literature

For the pharmacological activity of pyrazole compounds, see: Ge et al. (2009[Ge, Y. Q., Jia, J., Li, Y., Yin, L. & Wang, J. W. (2009). Heterocycles, 42, 197-206.], 2011[Ge, Y. Q., Jia, J., Yang, H., Tao, X. T. & Wang, J. W. (2011). Dyes Pigments, 88, 344-349.]). For the synthesis of the title compound, see: Li et al. (2011[Li, Y.-Q., Jia, B.-X., Xiao, Y.-L. & Guo, F.-G. (2011). Acta Cryst. E67, o468.]). For the structure of ethyl 1-benzyl-3-(4-fluoro­phen­yl)-1H-pyrazole-5-carboxyl­ate, see: Han et al. (2011[Han, Z., Zheng, H.-L. & Tian, X.-L. (2011). Acta Cryst. E67, o511.]). For a related structure, see: Ge et al. (2007[Ge, Y.-Q., Dong, W.-L., Xia, Y., Wei, F. & Zhao, B.-X. (2007). Acta Cryst. E63, o1313-o1314.]).

[Scheme 1]

Experimental

Crystal data
  • C21H22N2O3

  • Mr = 350.41

  • Monoclinic, P 21 /c

  • a = 7.3272 (6) Å

  • b = 24.8129 (19) Å

  • c = 10.4556 (8) Å

  • β = 97.391 (1)°

  • V = 1885.1 (3) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 0.08 mm−1

  • T = 298 K

  • 0.23 × 0.16 × 0.13 mm

Data collection
  • Bruker SMART CCD area-detector diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 1998[Bruker (1998). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.981, Tmax = 0.989

  • 9809 measured reflections

  • 3352 independent reflections

  • 2678 reflections with I > 2σ(I)

  • Rint = 0.022

Refinement
  • R[F2 > 2σ(F2)] = 0.042

  • wR(F2) = 0.119

  • S = 1.03

  • 3352 reflections

  • 235 parameters

  • H-atom parameters constrained

  • Δρmax = 0.19 e Å−3

  • Δρmin = −0.18 e Å−3

Data collection: SMART (Bruker, 1998[Bruker (1998). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 1998[Bruker (1998). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: XP in SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); software used to prepare material for publication: SHELXL97.

Supporting information


Comment top

Synthesis of nitrogen-containing heterocyclic compounds has been a subject of great interest due to the wide application in agrochemical and pharmaceutical fields (Ge et al.; 2011, 2009). Some pyrazole derivatives which belong to this category have been of interest for their biological activities. Considerable efforts have been devoted to the development of novel pyrazole compounds. We report here the crystal structure of the title compound, (I) (Fig. 1)

Related literature top

For the pharmacological activity of pyrazole compounds, see: Ge et al. (2009, 2011). For the synthesis of the title compound, see: Li et al. (2011). For the structure of ethyl 1-benzyl-3-(4-fluorophenyl)-1H-pyrazole-5-carboxylate, see: Han et al. (2011). For a related structure, see: Ge et al. (2007).

Experimental top

A mixture of ethyl 3-p-tolyl-1H-pyrazole-5-carboxylate (0.02 mol), 1-(chloromethyl)-4-methoxybenzene (0.0024 mol) and potassium carbonate (0.02 mol) in acetonitrile (100 ml) was heated to reflux for 10 h. The solvent was removed under reduced pressure and an product was isolated by column chromatography on silica gel (yield 85%). Crystals of (I) suitable for X-ray diffraction were obtained by slow cooling of the refluxed solution of the product in ethyl acetate at room temperature for 2 d.

Refinement top

All H atoms were placed in geometrically calculated positions and refined using a riding model with C—H = 0.97 Å (for CH2 groups) and 0.96 Å (for CH3 groups), their isotropic displacement parameters were set to 1.2 times (1.5 times for CH3 groups) the equivalent displacement parameter of their parent atoms.

Computing details top

Data collection: SMART (Bruker, 1998); cell refinement: SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The molecular structure of (I), showing displacement ellipsoids drawn at the 50% probability level.
Ethyl 1-(4-methoxybenzyl)-3-p-tolyl-1H-pyrazole-5-carboxylate top
Crystal data top
C21H22N2O3F(000) = 744
Mr = 350.41Dx = 1.235 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P cd ..2ybcCell parameters from 4354 reflections
a = 7.3272 (6) Åθ = 2.6–27.0°
b = 24.8129 (19) ŵ = 0.08 mm1
c = 10.4556 (8) ÅT = 298 K
β = 97.391 (1)°Block, colorless
V = 1885.1 (3) Å30.23 × 0.16 × 0.13 mm
Z = 4
Data collection top
Bruker SMART CCD area-detector
diffractometer
3352 independent reflections
Radiation source: fine-focus sealed tube2678 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.022
ϕ and ω scansθmax = 25.1°, θmin = 2.1°
Absorption correction: multi-scan
(SADABS; Bruker, 1998)
h = 88
Tmin = 0.981, Tmax = 0.989k = 2729
9809 measured reflectionsl = 1212
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.042Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.119H-atom parameters constrained
S = 1.03 w = 1/[σ2(Fo2) + (0.0599P)2 + 0.3339P]
where P = (Fo2 + 2Fc2)/3
3352 reflections(Δ/σ)max = 0.001
235 parametersΔρmax = 0.19 e Å3
0 restraintsΔρmin = 0.18 e Å3
Crystal data top
C21H22N2O3V = 1885.1 (3) Å3
Mr = 350.41Z = 4
Monoclinic, P21/cMo Kα radiation
a = 7.3272 (6) ŵ = 0.08 mm1
b = 24.8129 (19) ÅT = 298 K
c = 10.4556 (8) Å0.23 × 0.16 × 0.13 mm
β = 97.391 (1)°
Data collection top
Bruker SMART CCD area-detector
diffractometer
3352 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 1998)
2678 reflections with I > 2σ(I)
Tmin = 0.981, Tmax = 0.989Rint = 0.022
9809 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0420 restraints
wR(F2) = 0.119H-atom parameters constrained
S = 1.03Δρmax = 0.19 e Å3
3352 reflectionsΔρmin = 0.18 e Å3
235 parameters
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O10.88269 (19)0.71616 (5)1.05256 (13)0.0819 (4)
O21.43164 (19)0.64241 (7)0.60151 (14)0.0970 (5)
O31.36112 (17)0.67333 (5)0.40045 (14)0.0775 (4)
N11.08187 (17)0.58456 (5)0.56329 (12)0.0554 (3)
N20.91743 (17)0.56391 (5)0.51579 (12)0.0538 (3)
C10.9991 (4)0.75363 (9)1.1249 (2)0.1030 (8)
H1A1.09280.73461.17990.155*
H1B0.92790.77511.17670.155*
H1C1.05550.77661.06740.155*
C20.9582 (2)0.68359 (6)0.96740 (15)0.0576 (4)
C30.8353 (2)0.65104 (7)0.89121 (16)0.0600 (4)
H30.71050.65260.89940.072*
C40.8966 (2)0.61650 (6)0.80360 (15)0.0560 (4)
H40.81250.59490.75280.067*
C51.0821 (2)0.61327 (6)0.78944 (14)0.0513 (4)
C61.2021 (2)0.64674 (7)0.86452 (16)0.0620 (4)
H61.32650.64580.85510.074*
C71.1422 (2)0.68166 (7)0.95353 (16)0.0641 (4)
H71.22580.70371.00360.077*
C81.1502 (2)0.57325 (7)0.69837 (16)0.0635 (4)
H8A1.28370.57380.70940.076*
H8B1.11140.53740.72000.076*
C91.1513 (2)0.61647 (6)0.47571 (16)0.0559 (4)
C101.3294 (2)0.64466 (8)0.50244 (19)0.0666 (5)
C111.5375 (3)0.70117 (9)0.4111 (2)0.0885 (7)
H11A1.63730.67620.43740.106*
H11B1.54150.72980.47450.106*
C121.5551 (4)0.72362 (11)0.2822 (3)0.1141 (9)
H12A1.54480.69510.21980.171*
H12B1.67280.74080.28400.171*
H12C1.45920.74950.25930.171*
C131.0262 (2)0.61579 (6)0.36636 (16)0.0565 (4)
H131.03520.63360.28910.068*
C140.8824 (2)0.58284 (6)0.39496 (14)0.0493 (4)
C150.7099 (2)0.56794 (6)0.31485 (14)0.0485 (3)
C160.6829 (2)0.57760 (7)0.18385 (16)0.0659 (5)
H160.77600.59360.14450.079*
C170.5193 (3)0.56376 (8)0.11051 (17)0.0725 (5)
H170.50470.57040.02230.087*
C180.3767 (2)0.54022 (6)0.16490 (16)0.0592 (4)
C190.4049 (2)0.52993 (6)0.29509 (16)0.0585 (4)
H190.31230.51340.33410.070*
C200.5676 (2)0.54355 (6)0.36890 (15)0.0569 (4)
H200.58250.53630.45690.068*
C210.1957 (3)0.52677 (9)0.08541 (19)0.0802 (6)
H21A0.13290.49980.12910.120*
H21B0.21810.51330.00280.120*
H21C0.12110.55860.07380.120*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0878 (9)0.0836 (9)0.0793 (8)0.0158 (7)0.0288 (7)0.0257 (7)
O20.0658 (8)0.1384 (13)0.0840 (10)0.0265 (8)0.0014 (7)0.0224 (9)
O30.0556 (7)0.0793 (8)0.0982 (10)0.0196 (6)0.0123 (7)0.0081 (7)
N10.0511 (7)0.0554 (7)0.0582 (8)0.0025 (6)0.0013 (6)0.0091 (6)
N20.0500 (7)0.0516 (7)0.0588 (8)0.0014 (6)0.0028 (6)0.0052 (6)
C10.128 (2)0.0880 (15)0.1008 (16)0.0380 (14)0.0435 (14)0.0397 (13)
C20.0673 (10)0.0547 (9)0.0516 (9)0.0087 (8)0.0112 (7)0.0018 (7)
C30.0532 (9)0.0632 (10)0.0642 (10)0.0085 (8)0.0104 (8)0.0016 (8)
C40.0545 (9)0.0524 (8)0.0583 (9)0.0097 (7)0.0032 (7)0.0014 (7)
C50.0542 (9)0.0478 (8)0.0490 (8)0.0021 (7)0.0042 (6)0.0061 (6)
C60.0476 (9)0.0735 (11)0.0622 (10)0.0030 (8)0.0030 (7)0.0022 (8)
C70.0627 (10)0.0691 (10)0.0584 (9)0.0155 (8)0.0007 (8)0.0095 (8)
C80.0607 (10)0.0592 (9)0.0665 (10)0.0116 (8)0.0080 (8)0.0016 (8)
C90.0482 (8)0.0564 (9)0.0643 (10)0.0028 (7)0.0113 (7)0.0149 (7)
C100.0503 (9)0.0732 (11)0.0767 (12)0.0049 (8)0.0104 (9)0.0244 (10)
C110.0576 (11)0.0855 (13)0.1256 (19)0.0235 (10)0.0243 (11)0.0262 (13)
C120.0986 (18)0.1104 (18)0.142 (2)0.0398 (15)0.0482 (16)0.0131 (16)
C130.0533 (9)0.0593 (9)0.0582 (9)0.0068 (7)0.0120 (7)0.0067 (7)
C140.0486 (8)0.0466 (8)0.0532 (8)0.0003 (6)0.0088 (6)0.0070 (6)
C150.0487 (8)0.0434 (7)0.0535 (8)0.0011 (6)0.0072 (6)0.0031 (6)
C160.0593 (10)0.0797 (11)0.0590 (10)0.0138 (9)0.0082 (8)0.0101 (8)
C170.0699 (11)0.0911 (13)0.0535 (10)0.0144 (10)0.0031 (8)0.0134 (9)
C180.0558 (9)0.0548 (9)0.0639 (10)0.0049 (7)0.0034 (8)0.0031 (8)
C190.0534 (9)0.0594 (9)0.0623 (10)0.0107 (7)0.0063 (7)0.0046 (7)
C200.0584 (10)0.0602 (9)0.0517 (9)0.0082 (7)0.0057 (7)0.0040 (7)
C210.0678 (12)0.0881 (13)0.0785 (13)0.0158 (10)0.0143 (10)0.0097 (10)
Geometric parameters (Å, º) top
O1—C21.371 (2)C9—C131.370 (2)
O1—C11.413 (2)C9—C101.475 (2)
O2—C101.199 (2)C11—C121.479 (3)
O3—C101.327 (2)C11—H11A0.9700
O3—C111.457 (2)C11—H11B0.9700
N1—N21.3442 (17)C12—H12A0.9600
N1—C91.358 (2)C12—H12B0.9600
N1—C81.464 (2)C12—H12C0.9600
N2—C141.341 (2)C13—C141.396 (2)
C1—H1A0.9600C13—H130.9300
C1—H1B0.9600C14—C151.471 (2)
C1—H1C0.9600C15—C161.379 (2)
C2—C71.375 (2)C15—C201.387 (2)
C2—C31.383 (2)C16—C171.381 (2)
C3—C41.372 (2)C16—H160.9300
C3—H30.9300C17—C181.382 (2)
C4—C51.388 (2)C17—H170.9300
C4—H40.9300C18—C191.374 (2)
C5—C61.379 (2)C18—C211.509 (2)
C5—C81.505 (2)C19—C201.377 (2)
C6—C71.383 (2)C19—H190.9300
C6—H60.9300C20—H200.9300
C7—H70.9300C21—H21A0.9600
C8—H8A0.9700C21—H21B0.9600
C8—H8B0.9700C21—H21C0.9600
C2—O1—C1118.00 (15)O3—C11—C12106.82 (18)
C10—O3—C11115.99 (16)O3—C11—H11A110.4
N2—N1—C9111.65 (13)C12—C11—H11A110.4
N2—N1—C8117.54 (14)O3—C11—H11B110.4
C9—N1—C8130.63 (14)C12—C11—H11B110.4
C14—N2—N1105.56 (12)H11A—C11—H11B108.6
O1—C1—H1A109.5C11—C12—H12A109.5
O1—C1—H1B109.5C11—C12—H12B109.5
H1A—C1—H1B109.5H12A—C12—H12B109.5
O1—C1—H1C109.5C11—C12—H12C109.5
H1A—C1—H1C109.5H12A—C12—H12C109.5
H1B—C1—H1C109.5H12B—C12—H12C109.5
O1—C2—C7124.91 (15)C9—C13—C14105.70 (14)
O1—C2—C3115.53 (15)C9—C13—H13127.1
C7—C2—C3119.57 (15)C14—C13—H13127.1
C4—C3—C2120.29 (16)N2—C14—C13110.41 (13)
C4—C3—H3119.9N2—C14—C15119.64 (13)
C2—C3—H3119.9C13—C14—C15129.95 (14)
C3—C4—C5121.11 (14)C16—C15—C20117.46 (14)
C3—C4—H4119.4C16—C15—C14121.64 (14)
C5—C4—H4119.4C20—C15—C14120.90 (14)
C6—C5—C4117.76 (15)C15—C16—C17120.77 (16)
C6—C5—C8121.24 (15)C15—C16—H16119.6
C4—C5—C8120.97 (14)C17—C16—H16119.6
C5—C6—C7121.74 (16)C16—C17—C18121.67 (16)
C5—C6—H6119.1C16—C17—H17119.2
C7—C6—H6119.1C18—C17—H17119.2
C2—C7—C6119.52 (15)C19—C18—C17117.44 (15)
C2—C7—H7120.2C19—C18—C21120.94 (16)
C6—C7—H7120.2C17—C18—C21121.62 (16)
N1—C8—C5112.58 (12)C18—C19—C20121.25 (15)
N1—C8—H8A109.1C18—C19—H19119.4
C5—C8—H8A109.1C20—C19—H19119.4
N1—C8—H8B109.1C19—C20—C15121.40 (15)
C5—C8—H8B109.1C19—C20—H20119.3
H8A—C8—H8B107.8C15—C20—H20119.3
N1—C9—C13106.68 (13)C18—C21—H21A109.5
N1—C9—C10123.21 (15)C18—C21—H21B109.5
C13—C9—C10130.11 (16)H21A—C21—H21B109.5
O2—C10—O3124.36 (17)C18—C21—H21C109.5
O2—C10—C9125.51 (19)H21A—C21—H21C109.5
O3—C10—C9110.13 (15)H21B—C21—H21C109.5
C9—N1—N2—C140.47 (16)C13—C9—C10—O2179.11 (18)
C8—N1—N2—C14176.15 (12)N1—C9—C10—O3179.23 (14)
C1—O1—C2—C75.1 (3)C13—C9—C10—O31.0 (2)
C1—O1—C2—C3174.62 (18)C10—O3—C11—C12172.00 (18)
O1—C2—C3—C4179.36 (15)N1—C9—C13—C140.54 (17)
C7—C2—C3—C40.9 (2)C10—C9—C13—C14179.66 (16)
C2—C3—C4—C50.1 (2)N1—N2—C14—C130.10 (16)
C3—C4—C5—C61.3 (2)N1—N2—C14—C15179.65 (12)
C3—C4—C5—C8176.70 (14)C9—C13—C14—N20.28 (17)
C4—C5—C6—C71.5 (2)C9—C13—C14—C15179.21 (14)
C8—C5—C6—C7176.49 (15)N2—C14—C15—C16167.43 (15)
O1—C2—C7—C6179.58 (16)C13—C14—C15—C1613.1 (2)
C3—C2—C7—C60.7 (3)N2—C14—C15—C2012.6 (2)
C5—C6—C7—C20.5 (3)C13—C14—C15—C20166.84 (15)
N2—N1—C8—C586.72 (17)C20—C15—C16—C170.5 (3)
C9—N1—C8—C588.0 (2)C14—C15—C16—C17179.41 (16)
C6—C5—C8—N1116.20 (17)C15—C16—C17—C180.5 (3)
C4—C5—C8—N165.9 (2)C16—C17—C18—C191.4 (3)
N2—N1—C9—C130.65 (17)C16—C17—C18—C21177.98 (18)
C8—N1—C9—C13175.60 (15)C17—C18—C19—C201.3 (3)
N2—N1—C9—C10179.54 (14)C21—C18—C19—C20178.05 (17)
C8—N1—C9—C104.6 (2)C18—C19—C20—C150.3 (3)
C11—O3—C10—O23.2 (3)C16—C15—C20—C190.6 (2)
C11—O3—C10—C9176.93 (14)C14—C15—C20—C19179.35 (14)
N1—C9—C10—O20.7 (3)

Experimental details

Crystal data
Chemical formulaC21H22N2O3
Mr350.41
Crystal system, space groupMonoclinic, P21/c
Temperature (K)298
a, b, c (Å)7.3272 (6), 24.8129 (19), 10.4556 (8)
β (°) 97.391 (1)
V3)1885.1 (3)
Z4
Radiation typeMo Kα
µ (mm1)0.08
Crystal size (mm)0.23 × 0.16 × 0.13
Data collection
DiffractometerBruker SMART CCD area-detector
diffractometer
Absorption correctionMulti-scan
(SADABS; Bruker, 1998)
Tmin, Tmax0.981, 0.989
No. of measured, independent and
observed [I > 2σ(I)] reflections
9809, 3352, 2678
Rint0.022
(sin θ/λ)max1)0.596
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.042, 0.119, 1.03
No. of reflections3352
No. of parameters235
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.19, 0.18

Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008).

 

References

First citationBruker (1998). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.  Google Scholar
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Volume 67| Part 5| May 2011| Page o1084
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