Benzo[1,5]thiazepine: Synthesis, Reactions, Spectroscopy, and Applications
Scheme 18
Reaction of 4-(4-fluoro-2-methylphenyl)-4-oxobut-2-enoic acids with o-amino thiophenol derivatives in the presence of Lanthanum-containing Y zeolite (LaY), while stirring, under solventless conditions.