5,6‐dihydro‐4H‐1,3,4‐thiadiazines. II. synthesis and use of 1‐(1‐methylhydrazino)‐2‐propanethiol for the preparation of various thiadiazines and a 2‐thiazolidinethione

Abstract This paper reports the synthesis of 1‐(1‐methylhydrazino)‐2‐propanethiol and the results of a study of its reactions with benzaldehyde, benzonitrile, benzoyl chloride, triethyl orthoformate, succinonitrile, cyanogen bromide, and cyclopropylcyanide to give a thiadiazine directly or a product which can be converted to a thiadiazine. It also reports the condensation of 1‐(1‐methylhydrazino)‐2‐propanethiol with carbon disulfide to yield a 2‐thiazolidinethione.