Asymmetric dihydroxylation (AD) of N,N-dialkyl and N-methoxy-N-methyl α,β- and β,γ-unsaturated amides
作者:Youssef L. Bennani、K.Barry Sharpless
DOI:10.1016/s0040-4039(00)60350-7
日期:1993.3
The asymmetricdihydroxylation of α,β- and β,γ-unsaturated amides affords the corresponding diols in good yields and excellent enantiomeric excesses. However, both N,N-diakyl and N-methoxy-N-methyl α,β and β,γ-unsaturated amides require a Modified-AD-mix™ formulation to achieve good catalytic turnover rates
Catalytic asymmetric hydroboration of β,γ-unsaturated Weinreb amides: striking influence of the borane
作者:Sean M. Smith、Maulen Uteuliyev、James M. Takacs
DOI:10.1039/c1cc11746g
日期:——
Subtle differences in the structure of the borane strongly influence the catalytic efficiency and level of enantioselectivity in the catalytic asymmetric hydroboration of β,γ-unsaturated Weinreb amides.