申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0134615A1
公开(公告)日:1985-03-20
A process for preparing an N-substituted nitromethylene heterocyclic compound of the following general formula:-
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:
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.
一种制备通式如下的 N-取代的硝基亚甲基杂环化合物的工艺
其中 n 为 2 或 4,R 为由有机酸衍生的任选取代的酰基,其特征在于下式通式的 N-取代-S-取代氨基硫醇:
其中 R 和 n 的含义如前所述,Hal 为卤素原子,在惰性溶剂存在下与碱,最好是碱金属或碱土金属氢化物或碱氧化物或碱金属酰胺反应。