Abstract
The reduction product of 2-chloro-4-thiocyano-5-nitropyrimidine (I) was found to be 2-chloro-4-thiocyano-5-aminopyrimidine (II). Reaction of (II) with sodium ethoxide or ethanethioxide gave 2, 4-diethoxy-5-aminopyrimidine and 2-ethylthio-4-thiocyano-5-amino-pyrimidine. 2-Chloro-4-mercapto-5-aminopyrimidine reacted with acetic anhydride and the resulting product was 2-methyl-5-chlorothiazolo [5, 4-d] pyrimidine, the chlorine of which is reactive.
