作者:Rocío Robles-Machín、Inés Alonso、Javier Adrio、Juan C. Carretero
DOI:10.1002/chem.200903443
日期:2010.5.10
Improving the structural scope: A catalytic asymmetric 1,3‐dipolar cycloaddition involving α‐iminonitriles as azomethine precursors has been developed. In the presence of AgOAc/Taniaphos as the catalyst system the reaction of α‐iminonitriles with dimethyl fumarate and N‐methyl maleimide affords 2‐cyanopyrrolidines with good endo selectivity and enantioselectivity (68–≥99 % ee; see scheme).
改善结构范围:已开发出一种催化不对称的1,3-偶极环加成反应,其中涉及α-亚胺作为甲亚胺的前体。在有AgOAc / Taniaphos作为催化剂体系的情况下,α-亚氨基腈与富马酸二甲酯和N-甲基马来酰亚胺的反应提供了具有良好内选择性和对映选择性(68-≥99% ee;参见方案)的2-氰基吡咯烷。