A highly efficient intramolecular enantioselective Friedel-Crafts alkylation reaction of indolyl enones utilizing chiral N-triflyl phosphoramide catalyst is described. Various tetrahydropyrano[3,4-b]indoles (THPI) have been afforded with excellent yields and up to 98% ee.
本研究介绍了利用手性 N-三
乙烯基磷酰胺催化剂对
吲哚烯酮进行高效的分子内对映选择性 Friedel-Crafts 烷基化反应。得到了各种
四氢吡喃并[3,4-b]
吲哚(TH
PI),产量极高,ee高达 98%。