Copper-carbene complexes as catalysts in the synthesis of functionalized styrenes and aliphatic alkenes

H Lebel, M Davi, S Díez-González…

Index: Lebel, Helene; Davi, Michael; Diez-Gonzalez, Silvia; Nolan, Steven P. Journal of Organic Chemistry, 2007 , vol. 72, # 1 p. 144 - 149

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Citation Number: 71

Abstract

(NHC)-Cu (NHC= N-heterocyclic carbene) complexes efficiently catalyzed the methylenation of a variety of aliphatic and aromatic aldehydes and ketones in the presence of trimethylsilyldiazomethane, triphenylphosphine, and 2-propanol. The copper catalysts are not only inexpensive compared to rhodium complexes, but they also exhibit better functional group compatibility with aromatic aldehydes and ketones. Indeed very high yields were ...