Europhtal: An industrial cobalt phthalocyanine complex as the efficient catalyst for synthesis of thioamides by one‐pot reaction of mercaptans and amines
The potential of industrial cobaltphthalocyanines in the synthesis of thioamides is reported. A mixture of an industrial sulfonated cobaltphthalocyanines known as Co[(SO3Na)2,3Pc] (Europhtal catalyst additive 8020) is introduced as an efficient catalyst capable of converting benzyl thiols to synthetically valuable thioamides by reaction with amines and DMSO. In this procedure, different primary and
ABSTRACT A mixed bases mediated protocol is developed to synthesize thioamides from N-aryl or N-alkylamide, aldehyde and elemental sulfur in water. This reaction requires no addition of external oxidant and avoids large excess of amides. Various functional groups and pharmaceutically interesting heteroaromatic rings could be introduced via this efficient procedure. GRAPHICAL ABSTRACT