Coindard,G. et al., Bulletin de la Societe Chimique de France, 1972, p. 811 - 817
作者:Coindard,G. et al.
DOI:——
日期:——
Bromination of tri(isopropyl)boroxine and asymmetric synthesis of (2-cyano-3,3-dimethylcyclopropyl)boronic esters
作者:Donald S Matteson、Dilinie Fernando
DOI:10.1016/s0022-328x(03)00208-0
日期:2003.8
to be the only useful chiral boronicester in such circumstances. Cyclization of the cyano-substituted boronicester to the corresponding cyclopropylboronic ester yielded a mixture of diastereomers, presumably the result of base-induced epimerization of the initially formed major isomer having the boronicester and cyano groups trans.