Synthesis and Anti-Aphid Aphis Gossypii Glover Activity of Some New Quinoline Derivatives

Abstract

A series of quinoline derivatives have been elaborated from reaction of 2-(m- and p-acetylanilino)-quinolines 6a-b with aldehydes under Claisen-Schmidt conditions followed by cyclization with phenyl hydrazine and hydroxylamine. Reaction of 6a and 6b with hydrazine, semicarbazide and thiosemicarbazide, cyanoacetylhydrazide and some subsequent condensation reactions led to diverse quinoline derivatives. Anti-Aphid Aphis gossypii that harm cotton crop in Egypt was screened. Compound 12 showed an LC₅₀ value of 19429E-10 ppm which is much more active than Marshal (Carbosulfan), one of the broad spectrum insecticides widely used in this field.