Organocatalytic Asymmetric Michael Addition of 1-Acetylindolin-3-ones to α,β-Unsaturated Aldehydes: Synthesis of 2-Substituted Indolin-3-ones
作者:Yao-Zong Liu、Jie Zhang、Peng-Fei Xu、Yong-Chun Luo
DOI:10.1021/jo201123p
日期:2011.9.16
A highly efficient asymmetric Michaeladdition of 1-acetylindolin-3-ones to α,β-unsaturatedaldehydes is developed to afford 2-substituted indolin-3-one derivatives in high yields (up to 94%) with good stereoselectivities (up to 11:1 dr and 96% ee). The Michael adducts can be transformed into substituted cyclopentyl[b]indoline compounds conveniently without racemization.
开发了一种高效率的1-乙酰吲哚-3-酮不对称迈克尔加成α,β-不饱和醛,以高产率(高达94%)提供2-取代的吲哚-3-酮衍生物,具有良好的立体选择性(高达11 :1 dr和96%ee)。迈克尔加合物可以方便地转化为取代的环戊基[ b ]二氢吲哚化合物,而无需外消旋化。