AbstractBy treating β‐mercaptopropionic acid with aryl (aralkyl) isothiocyanates in weak alkaline medium, the authors have obtained the corresponding β‐(N‐aryl(aralkyl)‐thiocarbamoylthio)‐propionic acids which, heated 2 hours at 120°, yield the corresponding 3‐aryl(aralkyl)‐4‐oxo‐2‐thiono‐tetrahydrothiazines.
725. The preparation of some 3-substituted rhodanines and their thiazine analogues