131139-94-1Relevant articles and documents
Asymmetric conjugate addition of organometallic reagents to chiral α,β-unsaturated esters
Fang,Ogawa,Suemune,Sakai
, p. 389 - 398 (2007/10/02)
Asymmetric conjugate addition to α,β-unsaturated ester was studied using four kinds of cyclic diols (1c-4c) as chiral auxiliaries. Among the tested substrates, (R,R)-cyclohexane-1,2-diol derivatives (6a-c) and (1R,2S)-2-hydroxymethylcyclopentanol derivative (7a) showed high and reverse diastereoselectivity in conjugate addition by organocuprates (R2CuLi) and/or Grignard reagents in the presence of copper iodide (RMgBr + CuI), respectively.