Chemoselective Hydrosilylation of the α,β-Site Double Bond in α,β- and α,β,γ,δ-Unsaturated Ketones Catalyzed by Macrosteric Borane Promoted by Hexafluoro-2-propanol
作者:Xiao-Yu Zhan、Hua Zhang、Yu Dong、Jian Yang、Shuai He、Zhi-Chuan Shi、Lei Tang、Ji-Yu Wang
DOI:10.1021/acs.joc.0c00568
日期:2020.5.15
The B(C6F5)3-catalyzed chemoselective hydrosilylation of α,β- and α,β,γ,δ-unsaturated ketones into the corresponding non-symmetric ketones in mild reaction conditions is developed. Nearly 55 substrates including those bearing reducible functional groups such as alkynyl, alkenyl, cyano, and aromatic heterocycles are chemoselectively hydrosilylated in good to excellent yields. Isotope-labeling studies
在温和的反应条件下,由B(C6F5)3催化的α,β-和α,β,γ,δ-不饱和酮的化学选择性氢化硅烷化为相应的不对称酮。将近55种底物,包括带有可还原官能团(例如炔基,烯基,氰基和芳香族杂环)的底物,以良好或优异的产率进行化学选择性氢化硅烷化。同位素标记研究表明,六氟-2-丙醇在该过程中也用作氢源。