ChemInform Abstract: Asymmetric Friedel—Crafts Alkylation Reaction in the Construction of Trifluoromethylated All‐Carbon Quaternary Stereocenters.

Abstract

Construction of all-carbon quaternary stereocenter by asymmetric Friedel–Crafts alkylation reaction remains a significant challenge. By the introduction of CF3 group at the β-position of nitroalkene, a highly enantioselective Friedel–Crafts reaction of indoles with β-CF3-β-substituted nitroalkenes was achieved using Ni(ClO4)2-bisoxazoline complex as a catalyst, which afforded indole-bearing chiral compounds with trifluoromethylated all-carbon quaternary stereogenic centers in good yields and excellent enantio­selectivities.