Microwave induced formation of 3-chloro-5-arylpenta-2,4-dien-l-als and 3-chloro-(5- formylaryl)penta-2,4-dien-1-als by Vilsmeier reaction

Abstract

The 3-chloro-5-arylpenta-2,4-dien-1-als and 3-chloro-(5-formylaryl)penta-2,4-dien-1-als have been prepared by Vilsmeier reaction under microwave condition. The compounds are obtained within a short duration of time (40 sec.(2.45 GHz)). The rate of the reaction is found to be accelerated by about 270 fold when compared to conventional technique. The formylated products are chromatographed and characterized by IR, ¹H NMR, and ¹³C NMR.