Chiral squaramides are highly enantioselective catalysts for FriedelâCrafts reaction of indoles with N-tosyl imines, affording 3-indolyl methanamine products in 85â96% yields and 84â96% ees.
                                    手性方酰胺是
吲哚与 N-对
甲苯磺
酰亚胺进行 FriedelâCrafts 反应的高对映选择性催化剂,可生成 3-
吲哚基
甲胺产品,收率 85â96% ,醚率 84â96% 。