Tetrahedron letters

A novel tautomerism in alkyl dihydropyrimidines: observation of tautomerism by HD exchange of 2-and/or 4-methyl protons of dihydropyrimidines in CD 3 OD

YH Kim, BU Lim

Index: Kim, Yong Hae; Lim, Byoung Uk Tetrahedron Letters, 1991 , vol. 32, # 18 p. 2057 - 2060

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Abstract

Abstract A novel tautomerism was found in dihydropyrimidines such as 2-amino-4, 6, 6- trimethyldihydropyrimidine 1 and 2, 4, 6, 6-tetramethyldihydropyrimidine 2 by the observation of HD exchange on both 4-methyl protons of 1 and 2, 4-dimethyl protons of 2 by