A highly practical, catalytic enantioselective cyclic phosphite addition to aldehydes and ketones was developed. The reaction rate of the asymmetric hydrophosphonylation was significantly enhanced by the addition of silver carbonate. Particularly, significant improvement has been achieved on the asymmetric hydrophosphonylation of unactivated ketones, giving quaternary α-hydroxy phosphonates with excellent
高度实用的催化对映选择性环
亚磷酸酯除醛和酮外,还开发了其他产品。添加
银可显着提高不对称氢膦酰化反应的速率
碳酸盐。特别是,未活化的酮的不对称加氢膦酰基化已获得了显着的改进,从而形成了季
铵盐。α-羟基具有出色的对映选择性(高达99%ee)的
膦酸酯。