Uses of Piperonal in the Synthesis of Novel Prop-2-Enoyl Amides, Esters, Heterocyclic Systems and Study of their Antibacterial Activities

Abstract

Novel ( E)-3-(benzo[d][1,3]dioxol-5-yl)-2-cyanoacryloyl chloride 4 was condensed with several mono-; 1,2-; 1,3- and 1,4-bi-nucleophilic reagents containing nitrogen and oxygen to give new 2-propenoylamide and ester derivatives. Some of these amides cyclised under the reaction conditions and/or with POCl3 to give new derivatives of heterocyclic systems. Antibacterial activities were tested for nine of these products.