Syntheses of New Pyrazolo[3,4-d]-pyrimidine Derivatives Starting from 1,1-Diamino-2,2-dicyanoethylene
作者:Richard Neidlein、Zhijun Wang
DOI:10.3987/com-97-7823
日期:——
3,4-Diamino-6-dimethylamino-1-methylpyrazolo[3,4-6]-pyrimidine (4) was prepared from the reaction of 6-amino-4-chloro-5-cyano-2-dimethylaminopyrimidine (3) with methylhydrazine. It reacted further with different aldehydes giving a variety of new pyrazolo[3,4-d]-pyrimidine derivatives.