Diastereo- and Enantioselective Construction of Dihydroisocoumarin-Based Spirooxindole Frameworks <i>via</i>
Organocatalytic Tandem Reactions
作者:Jia-Le Wu、Bai-Xiang Du、Yu-Chen Zhang、Ying-Ying He、Jing-Yi Wang、Ping Wu、Feng Shi
DOI:10.1002/adsc.201600271
日期:2016.9.1
An organocatalyticasymmetric approach has been developed for the ennantioselective construction of dihydroisocoumarin‐based spirooxindole frameworks in high yields, excellent diastereo‐ and enantioselectivities (up to 99%, all >95:5 dr, up to 99% ee). This approach takes advantage of chiral thiourea‐tertiaryamine catalyzed tandemreaction of isatins with enolizable homophthalic anhydride, which has