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Sur diverses possibilites de formation de pyrimidines a partir de formyl-3 chromone
Pene, Cecile,Hubert-Habart, Michel
, p. 329 - 332 (2007/10/02)
Guanidine transforms the following: (a) 3-formylchromone into a mixture of 2-amino-5-(2-hydroxybenzoyl)pyrimidine and 2-amino-5H--benzopyranopyrimidine; (b) the diacetate of 3-methylidynechromone into 2-amino-5-hydroxy-5Hbenzopyranopyrimidine; and (c) the oxime of 3-formylchromone into 2-amino-5H-benzopyranopyrimidin-5-one.Thiourea, acetamidine and nitroguanidine can also generate pyrimidines of the same type with 3-formylchromone, the diacetate of 3-methylidynechromone or 3-(1,3-dioxolan)chromone.
