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Conjugate Boration of β,β-Disubstituted Unsaturated Esters: Asymmetric Synthesis of Functionalized Chiral Tertiary Organoboronic Esters
作者:Xinhui Feng、Jaesook Yun
DOI:10.1002/chem.201002361
日期:2010.12.10
Challenging tertiaryorganoboronicesters containing a β‐ester group were prepared enantioselectively via the asymmetricconjugateboration of β,β‐disubstituted α,β‐unsaturatedesters with a copper–phosphine catalyst (see scheme). The functionalized organoboron derivatives can be utilized as a carbon nucleophile to form all‐carbon quaternary centers.