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Communication | Regular issue | Vol 16, No. 4, 1981, pp.563-571
Published online, 1st January, 1970
DOI: 10.3987/R-1981-04-0563
Synthesis of 2-Amino-6-phenyl-4(3H)-pyrimidinone-1-oxide

Wendell Wierenga,* Harvey I. Skulnick, Robert L. Dow, and Constance G. Chidester

*Experimental Chemistry Researchm Physical and Analytical Chemistry Rresearch, The Upjohn Company, Kalamazoo, Michigan 49001, U.S.A.

Abstract

Introduction of a 2,4-dichlorophenoxy group at the 4-position of 2-amino-6-phenylpyrimidine allowed a regioselective oxidation to the N1-oxide. The resultant pyrimidine oxide, derived from m-chloroperoxybenzoic acid treatment, was converted to the pyrimidinone by acidic hydrolysis. The structure was unambiguously determined by x-ray crystallographic analysis.