Synthesis and Transformations of Novel Shiff Bases Derived from 1-[2-Methyl-4-(methylsulfanyl)quinolin-3-yl]propan-2-ones

Novel Schiff base derivatives were synthesized, starting from 1-[2-methyl-4-sulfanylquinolin-3-yl]propan-2-ones and 1-[2-methyl-4-(methylsulfanyl)quinoline, substituted in the benzene ring. To obtain the Schiff base derivatives containing the 4-(methylsulfanyl) group, the corresponding 4-sulfanylquinoline-propan-2-ones and 3-(2-chloroallyl)-4-sulfanylquinolines were methylated, and then the chloroallyl group in the resulting 3-(2-chloroallyl)-4-(methylsulfanyl)quinolines was subjected to acid hydrolysis.