ORGANIC-SYNTHESIS USING ORGANOSULFUR-NITRITES AND ORGANOSULFUR-NITRATES

Abstract

Thionitrites or thionitrates have been considered to be unstable However, bulky groups' thio-NO(n) such as t-butylthio-nitrites and -nitrates have been readily synthesized and found to be stable enough for the use of the useful organic syntheses as an excellent nitrosation and diazotization reagents under mild conditions. Direct conversion of amines to the corresponding halides in the presence of copper halides (II), fluorination of heterocyclic amines in the presence of sodium tetrafluoroborate, alpha- oximation of methylene groups in ketones, facile cleavage of C=N bond to ketones, and desulfurization of thioacetals and thioketals, and other useful organic syntheses are described.