Tetrahedron

Olefin cyclopropanation catalyzed by new diiminophosphorane and triiminophosphorane complexes of copper and palladium

L Beaufort, A Demonceau, AF Noels

Index: Beaufort, Laurence; Demonceau, Albert; Noels, Alfred F. Tetrahedron, 2005 , vol. 61, # 38 p. 9025 - 9030

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Citation Number: 17

Abstract

Chelating diiminophosphorane and tripodal iminophosphorane copper and palladium complexes are found to efficiently catalyze the cyclopropanation of activated monosubstituted olefins with ethyl diazoacetate. Cycloolefins, and linear α-olefins are somewhat less reactive. The diastereoselectivities of the reactions are moderate and no major differences were seen when comparing the bidentate chelating ligand to the ...