Rhodium??Catalyzed Asymmetric [5+ 2] Cycloaddition of Alkyne–Vinylcyclopropanes

R Shintani, H Nakatsu, K Takatsu…

Index: Shintani, Ryo; Nakatsu, Hiroki; Takatsu, Keishi; Hayashi, Tamio Chemistry - A European Journal, 2009 , vol. 15, # 35 p. 8692 - 8694

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Citation Number: 54

Abstract

Transition-metal-catalyzed [5+ 2] cycloaddition of vinylcyclopropanes with carbonÀcarbon unsaturated bonds is an efficient way of constructing seven-membered carbocycles. Several transition metals such as rhodium,[1] ruthenium,[2] nickel,[3] and iron [4] can catalyze these reactions with alkynes as the reaction partner, and alkenes [1c, 5] and allenes [6] can also be employed under rhodium catalysis.[7, 8] Unfortunately, however, the development of ...