An efficient enantioselective cyanoformylation of aldehydes with ethyl cyanoformate, catalyzed by a chiral quaternary ammonium salt and triethylamine, has been developed. The reaction can be carried out in excellent yields (up to 97%) with moderate enantioselectivity (up to 72% ee).
                                    在手性季
铵盐和
三乙胺的催化下,开发出了一种高效的醛与
氰基甲酸乙酯的对映体选择性
氰基甲酰化反应。该反应的收率极高(高达 97%),对映体选择性适中(高达 72%ee)。