Chemistry of Heterocyclic Compounds p. 1046 - 1047 (1992)
Update date:2022-08-03
Topics:
Demina, L. M.
Konshin, M. E.
1-Aryl-2,5,7-trimethyl-4-oxo-1,4-dihydropyrido<2,3-d>pyrimidines are formed from the cyclization of N-acetyl-2-arylamino-4,6-dimethylnicotinonitriles by perchloric acid in a mixture of acetic acid and acetic anhydride. 1-Aryl-2-acetonyl-5,7-dimethyl-4-oxo
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