Synthesis and characterization of a series of 1,3,5-trisubstituted-2-pyrazolines derivatives using methanoic acid under thermal condition

摘要

An efficient and practical synthesis of 1,3,5-trisubstituted 2-pyrazoline structures was achieved through cyclization of phenylhydrazine with α,β -unsaturated ketones (chalcones) using methanoic acid (formic acid) as catalyst under thermal condition.