component system comprising of a primary β-amino silyl ethers as an organocatalyst and N-protected amino acids as a co-catalyst put together worked as an efficient organocatalyst system in the hetero Diels–Alder reaction of isatins with enones affording the chiral spirooxindole-tetrahydropyranones in good chemical yields and stereoselectivities (up to 94%, up to dr 78:22., up to 85% ee).
新的两种催化剂组分系统由作为有机催化剂的伯 β-
氨基甲
硅烷基醚和作为助催化剂的N-保护
氨基酸组合在一起,在
靛红与烯酮的杂 Diels-Alder 反应中作为有效的有机催化剂系统发挥作用,提供手性spirooxindole-tetrahydropyranones在良好的
化学产率和立体选择性(高达94%,高达博士78:22。,高达85%的ee值)。