Friedel–Crafts Addition of Indoles to Nitrones Promoted by Trimethylsilyl Trifluoromethanesulfonate
作者:Zachary Z. Oracheff、Helen L. Xia、Christopher D. Poff、Scott E. Isaacson、C. Wade Downey
DOI:10.1021/acs.joc.1c01551
日期:2021.12.3
Friedel–Crafts addition to aryl and secondary alkyl nitrones in the presence of trimethylsilyl trifluoromethanesulfonate and trialkylamine to produce 3-(1-(silyloxyamino)alkyl)indoles. Spontaneous conversion to bisindolyl(aryl)methanes, which is thermodynamically favored for nitrones derived from aromatic aldehydes, is suppressed under the reaction conditions. The silyloxyamino group can be deprotected with