作者:Karina Chulsky、Roman Dobrovetsky
DOI:10.1021/acs.orglett.8b02932
日期:2018.11.2
In contrast to the well-known reductive cleavage of the alkyl–O bond, the cleavage of the alkenyl–O bond is much more challenging especially using metal-free approaches. Unexpectedly, alkenyl–O bonds were reductively cleaved when enol ethers were reacted with Et3SiH and a catalytic amount of B(C6F5)3. Supposedly, this reaction is the result of a B(C6F5)3-catalyzed tandem hydrosilylation reaction and
与众所周知的烷基-O键的还原裂解相反,烯基-O键的裂解更具挑战性,尤其是使用无金属方法时。出乎意料的是,当烯醇醚与Et 3 SiH和催化量的B(C 6 F 5)3反应时,烯基-O键被还原性裂解。据推测,该反应是B(C 6 F 5)3催化的串联氢化硅烷化反应和硅辅助的β-消除的结果。基于实验和密度泛函理论(DFT)计算,提出了这种裂解反应的机理。