Tetrahedron Letters

Ruthenium (I)-catalyzed cyclopropanation reactions with (trimethylsilyl) diazomethane and aryldiazomethanes

G Maas, J Seitz

Index: Maas, Gerhard; Seitz, Juergen Tetrahedron Letters, 2001 , vol. 42, # 35 p. 6137 - 6140

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Citation Number: 17

Abstract

The polymeric ruthenium (I) complex [Ru2 (CO) 4 (μ-OAc) 2] n is a suitable catalyst for the cyclopropanation of mono-, 1, 1-as well as 1, 2-disubstituted, and trisubstituted alkenes with (trimethylsilyl) diazomethane, phenyl-diazomethane, and (4-cyanophenyl) diazomethane. Trisubstituted alkenes are cyclopropanated with a remarkable degree of syn-selectivity.