Modular synthesis of heterocyclic carbene precursors

A Paczal, AC Bényei, A Kotschy

Index: Paczal, Attila; Benyei, Attila C.; Kotschy, Andras Journal of Organic Chemistry, 2006 , vol. 71, # 16 p. 5969 - 5979

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Citation Number: 72

Abstract

A series of N-heterocyclic carbene precursors, containing an imidazoline or tetrahydropyrimidine framework, were prepared from ω-chloroalkanoyl chlorides. The sequential attachment of nitrogen nucleophiles and subsequent ring closure gave, depending on the reagents used, either the desired dihydroimidazolium and tetrahydropyrimidinium salts or their parent heterocycles. In this latter case, the second ...