Journal of Heterocyclic Chemistry

A synthesis of 6, 11??dihydro??2??methyl??6H??pyrimido [2, 1??b] quinazolin??4??ones

R Friary

Index: Friary,R. Journal of Heterocyclic Chemistry, 1978 , vol. 15, p. 77 - 80

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Abstract

Jan. 1978 A Synthesis of 6,il-Dihydro-2-methyl-6#-pyrimido[2,l-fe]qumazolin-4-ones Ii. Friary- Research Division, Schering-Plough Corporation, Bloomfield, New Jersey 07003 Received November 14,1977 Reductive cyclization of 2-methylthio-l-(2-nitrobenzyl)-6-pyrimidones with stannous chloride and acetic acid in methanol gives 6,ll-dihydro-6//-pyrirnido[2,l-ò]quiruizolin -4-ones, and, with trialkylphosphites, 6,ll-dihydro-ll-alkylpyrimido[2,l-6 ]quinazolin-4-ones. ...