Chiral arenethiolatocopper(I) catalyzed substitution reactions of acyclic allylic substrates with Grignard reagents
作者:Mayra van Klaveren、Eva S.M Persson、Amaya del Villar、David M Grove、Jan-E Bäckvall、Gerard van Koten
DOI:10.1016/0040-4039(95)00426-d
日期:1995.4
Asymmetric induction can be achieved in the gamma-selective substitution reaction of allylic substrates (RCH=CH-CH2Y) with n-BuMgI catalyzed by the chiral arenethiolatocopper(I) complex 1b. It was found that the enantiomeric excess of the gamma-substituted product (R'CH(n-Bu)CH=CH2) is influenced by the coordinating ability of the leaving group Y, and e.e.'s of up to 42% (R' = Cy, Y = OAc) have been obtained.