Journal of Organometallic Chemistry

A borylcopper species generated from bis (pinacolato) diboron and its additions to α, β-unsaturated carbonyl compounds and terminal alkynes

K Takahashi, T Ishiyama, N Miyaura

Index: Takahashi, Kou; Ishiyama, Tatsuo; Miyaura, Norio Journal of Organometallic Chemistry, 2001 , vol. 625, # 1 p. 47 - 53

Full Text: HTML

Citation Number: 235

Abstract

The addition of bis (pinacolato) diboron [(Me4C2O2) B–B (O2C2Me4)] to α, β-unsaturated carbonyl compounds giving β-boryl carbonyl compounds and the addition to terminal alkynes yielding either 2-boryl-1-alkenes or 1-boryl-1-alkenes were carried out in DMF at room temperature in the presence of CuCl and AcOK. The transmetalation between diboron and [Cu (Cl) OAc] K generating a borylcopper species was proposed as the key step in the ...