Syntheses of Heterocyclic Compounds of Nitrogen. CXI

Photosensitizing Dyes. (17)

Abstract

Quaternary salt of 4-picoline was condensed with aromatic aldehydes by the usual method to form 13 kinds of styryl-type dyes and was fused with formamidines to give seven kinds of aminovinyl-type dyes. Styryl-type dyes were also obtained by the reaction of pyridine-2- and -3-aldehydes respectively with 1-ethyl-4-picolinium iodide, 1-methylquinaldinium iodide, and 2, 3, 4-trimethylthiazolium iodide, and the dyes were converted to their haloalkyl derivatives. The majority of these dyes were submitted to antimicrobial tests with dehydroacetic acid and sorbic acid as the control.