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Activation of reducing agents. Sodium hydride containing complex reducing agents

1984; Elsevier BV; Volume: 264; Issue: 1-2 Linguagem: Inglês

10.1016/0022-328x(84)85152-9

1872-8561

Régis Vanderesse, Jean‐Jacques Brunet, P. Caubère,

Fluorine in Organic Chemistry

Abstract The preparation of NiCRA (NaH-t-AmONa-Ni(OAc)2) in the presence of 2,2′-bipyridine (bpy) leads to a new reagent (termed NiCRA-bpy) which is shown to be one of the most efficient Ni based reagents reported so far for the homocoupling of aryl and vinyl halides (including chlorides). The homo coupling of cis- and trans-β-bromostyrenes is shown to be stereospecific.