90965-24-5Relevant articles and documents
REACTION OF DIKETENE WITH 3-AMINO-5,6-DISUBSTITUTED-1,2,4-TRIAZINE DERIVATIVES
Daneshtalab, Mohsen,Tehrani, Mohammad Hassan Hooshdar
, p. 1095 - 1099 (2007/10/02)
Reaction of diketene with 3-amino-5,6-dimethyl-1,2,4-triazine (Ia) in acetic acid or benzene medium afforded 3-acetonyl-2,3,6-trimethyl-3H-pyrimido-1,2,4-triazin-8(5H)-one (II).On the other hand, reaction of diketene with 3-amino-5,6-diphenyl-1,2,4-triazine (Ib) gave rise to 3-acetoacetylamino-5,6-diphenyl-1,2,4-triazine(V) and 3-(3-acetyl-4-hydroxy-6-methylpyridin-2-one-1-yl)-5,6-diphenyl-1,2,4-triazine (VI), respectively.The reaction mechanism is discussed.