Towards perfect asymmetric catalysis: When binol‐derived N‐spiro quaternary ammonium salts were used as phase‐transfer catalysts in the conjugate addition of nitroalkanes to chalcones and its analogues, an intriguing reversal of enantioselectivity was observed. Novel chiral catalysts have been designed and synthesized (see structure).
朝着完美的不对称催化方向发展:当将二元醇衍生的N螺环季
铵盐用作向
烷烃及其类似物共轭添加硝基
烷烃的相转移催化剂时,观察到了令人感兴趣的对映选择性逆转。已经设计并合成了新型手性催化剂(参见结构)。