Aryne cycloaddition reactions of benzodioxasilines as aryne precursors generated by catalytic reductive ortho-C H silylation of phenols with traceless acetal directing groups
作者:Parham Asgari、Udaya Sree Dakarapu、Hiep H. Nguyen、Junha Jeon
DOI:10.1016/j.tet.2016.12.002
日期:2017.7
Diversely substituted arylsilyl triflates, as aryne precursors for aryne cycloaddition reactions, were accessed from benzodioxasilines. Catalytic reductive C-H ortho-silylation of phenols with traceless acetal directing groups was exploited to prepare benzodioxasilines. Sequential addition of MeLi and then trifluoromethanesulfonic anhydride to benzodioxasilines provided arylsilyl triflates in a single