| abstract |
A process for preparing an N-substituted nitromethylene heterocyclic compound of the following general formula:-n wherein n is 2, or 4 and R is an optionally-substituted acyl group derived from an organic acid, characterised in that an N-substituted-S-substituted aminothiol of the following general formula:n wherein R and n have the meanings hereinbefore specified and Hal is a halogen atom, is reacted with a base, preferably an alkali metal or alkaline earth metal hydride or alkoxide or an alkali metal amide, in the presence of an inert solvent. |