Process for the preparation of 2-substituted 5-nitroso-4,6-diaminopyrimidines. Malonic dinitrile and amidine are nitrosated in the presence of a nitrite salt, to form the corresponding amidine salt of isonitrosomalononitrile. The latter is converted to the end product in the presence of an aprotic polar solvent by heat treatment in a basic medium.
用于制备2-取代的5-亚硝基-4,6-二
氨基嘧啶的过程。马隆二腈和胺基在
亚硝酸盐存在下进行亚硝化反应,形成相应的异亚硝基马隆二腈盐。后者在无
水极性溶剂存在下,在碱性介质中通过热处理转化为最终产物。