109831-70-1Relevant articles and documents
A novel "ring-switching" amination: Conversion of 4-amino-5-cyanopyrimidine to 4,6-diamino-5-cyanopyrimidine
Taylor, Edward C.,Ehrhart, Wendell A.,Tomlin, Clive O.S.,Rampal, Jang B.
, p. 343 - 345 (2007/10/02)
4-Amino-5-cyanopyrimidine is "aminated" to 4,6-diamino-5-cyanopyrimidine by a ring-switching process involving ring closure with formamidine acetate to 4-aminopyrimido(4,5-d)pyrimidine, acidic hydrolysis to 4,6-diaminopyrimidine-5-carboxaldehyde, conversion of the latter to its oxime and dehydration.