Ethyl 1-tert-butyl-5-phenyl-1H-pyrazole-4-carboxyl-ate

Abstract

In the title compound, C(16)H(20)N(2)O(2), the pyrazole ring is essentially planar [maximum deviation = 0.008 (2) Å] and is inclined at an angle of 82.82 (10)° with respect to the phenyl ring. The crystal packing is consolidated by pairs of inter-molecular C-H⋯O hydrogen bonds, which link the mol-ecules into centrosymmetric dimers stacked along the a axis.

Fig. 1.

The molecular structure of the title compound, showing 50% probability displacement ellipsoids for non-H atoms and the atom-numbering scheme.

Fig. 2.

The crystal structure of the title compound, viewed along the a axis. H atoms not involved in hydrogen bonds (dashed lines) have been omitted for clarity.