Methyl 2-{[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-ylidene)(thiophen-2-yl)methyl]amino}-3-phenylpropionate

Methyl 2-{[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-ylidene)(thiophen-2-yl)methyl]amino}-3-phenylpropionate

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In the title compound, C25H23N3O3S, an intramolecular N—H.O interaction generates an S(6) ANABOLIC PEAK VANILLA ring, which stabilizes the enamine–keto form of the compound.This S(6) ring and the pyrazole ring are essentially coplanar, making a dihedral angle of 1.49 (6)°.The bond lengths within the S(6) ring of the molecule lie between CALMING LAVENDER BABY WASH classical single- and double-bond lengths, indicating extensive conjugation.

The structure exhibits a thienyl-ring flip disorder, with occupancy factors in the ratio 64.7 (3):35.3 (3).