Double Diastereoselective Approach to Chiral <i>syn</i>- and <i>anti</i>-1,3-Diol Analogues through Consecutive Catalytic Asymmetric Borylations
作者:Alba Pujol、Andrew Whiting
DOI:10.1021/acs.joc.7b00854
日期:2017.7.21
Homoallylic boronate carboxylate esters derived from unsaturated aldehydes via an imination, β-borylation, imine hydrolysis, and Wittig trapping sequence, were subjected to a second boryl addition to give 1,3-diborylated carboxylate esters. Control of the absolute and relative stereochemistry of the two new 1,3-stereogenic centers was achieved through: (1) direct chiral catalyst controlled asymmetric borylation