1047-50-3Relevant academic research and scientific papers
2-Alkyl-4-oxohexahydropyrimido[4,5-d]- and -[5,4-d]azocines
Voskressensky,Ovcharov,Borisova,Kulikova,Listratova,Borisov,Varlamov
experimental part, p. 222 - 228 (2011/12/15)
It has been established that 2-R-4-oxotetrahydropyrido[4,3-d]pyrimidines, under the action of activated alkynes in methanol, form a mixture of 2-R-4-oxohexahydropyrimido[4,5-d]azocines and products of decomposition of the tetrahydropyridine ring, the 2-R-5-methoxymethyl-4-oxo-6-vinylaminoethyl- pyrimidines. Tetrahydropyrido[3,4-d]pyrimidine, isomeric at the junction of the pyrimidine and tetrahydropyridine rings, forms only the corresponding pyrimido[5,4-d]azocine, the product of expansion, under the action of methyl propiolate.
