Tetrahedron letters

Preparation of allyl-, alkenyl-and of functionalized arylmanganese reagents by oxidative insertion of manganese-graphite into organic halides

A Fürstner, H Brunner

Index: Fuerstner, Alois; Brunner, Heiko Tetrahedron Letters, 1996 , vol. 37, # 39 p. 7009 - 7012

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Citation Number: 69

Abstract

Reduction of MnBr2· nLiBr (n= 1, 2) with 2 C8K in THF affords highly active Mn-graphite, which readily inserts into allyl-, alkenyl-,(substituted) aryl-and heteroaryl halides. The functionalized organomanganese compounds thus obtained may be efficiently trapped with different electrophiles such as aldehydes, anhydrides and acid chlorides, or can be cross- coupled with alkenyl halides in the presence of catalytic amounts of Fe (acac) 3.