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-pyrazo-line structures was achieved through cyclization of phenylhydrazine with α, β-unsaturated ketones (chalcones) using methanoic acid (fonnic acid) as catalyst under thermal condition.