Tetrahedron

Imidazolylidenes, imidazolinylidenes and imidazolidines

AJ Arduengo, R Krafczyk, R Schmutzler, HA Craig…

文献索引：Arduengo III, Anthony J.; Krafczyk, Roland; Schmutzler, Reinhard; Craig, Hugh A.; Goerlich, Jens R.; Marshall, William J.; Unverzagt, Markus Tetrahedron, 1999 , vol. 55, # 51 p. 14523 - 14534

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被引用次数: 810

摘要

Starting from glyoxal, 1, 3-diarylimidazolinium chlorides 3 were obtained in a three-step sequence via the diimines (1) and ethylene diamine dihydrochlorides (2). Reduction of 1, 3- diarylimidazolinium chlorides (3) with lithium alumnium hydride furnished the 1, 3- diarylimidazolidines (4) while their deprotonation with potassium hydride in thf gave access to stable carbenes (1, 3-diarylimidazolin-2-ylidenes, 5). Similarly substituted imidazol-2- ...