Abstract

A. V. Ingle^¹, A. G. Doshi^² and A. W. Raut^³      

1-(2’-Thienyl)-3-(4’’-dimethylamino phenyl)-2-propen-1-one(Ia-e) react with hydrazine hydrochloride in DMF medium to give isomeric 1-H pyrazolines (IIa-e), react with phenyl hydrazine hydrochloride in DMF medium to give isomeric 1-phenyl pyrazolines (IIIa-e),react with 2,4-dinitro phenyl hydrazine hydrochloride in DMF medium to give isomeric 1-(2,4-dinitro phenyl) pyrazolines (IVa-e) and also react with semicarbazide hydrochloride in DMF medium to give isomeric 1-carboxamido pyrazolines (Va-e). Characterization and structural elucidation were done on the basis of melting point determination, analytical and spectral studies.

Isomeric D²-pyrazolines; synthesis; structural study

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