Rhodium‐Catalyzed Remote C(sp
<sup>3</sup>
)−H Borylation of Silyl Enol Ethers
作者:Jie Li、Shuanglin Qu、Wanxiang Zhao
DOI:10.1002/anie.201913281
日期:2020.2.3
rhodium-catalyzed remote C(sp3 )-H borylation of silylenolethers (SEEs, E/Z mixtures) by alkene isomerization and hydroboration is reported. The reaction exhibits mild reaction conditions and excellent functional-group tolerance. This method is compatible with an array of SEEs, including linear and branched SEEs derivedfrom aldehydes and ketones, and provides direct access to a broad range of structurally
The Michael adducts are obtained with good to excellent ul selectivity by treating silyl enol ethers with α,β-unsaturated ketones in the presence of a catalytic amount of tritylperchlorate.
通过在催化量的高氯酸三苯甲基酯存在下用 α,β-不饱和酮处理甲硅烷基烯醇醚,以良好至极好的 ul 选择性获得迈克尔加合物。