Enantioselective Organocatalytic Domino Oxa-Michael/Aldol/Hemiacetalization: Synthesis of Polysubstituted Furofuranes Containing Four Stereocenters
作者:Efraím Reyes、Garazi Talavera、Jose L. Vicario、Dolores Badía、Luisa Carrillo
DOI:10.1002/anie.200901333
日期:2009.7.20
3 in 1: A triple domino reaction was developed for the preparation of the title products in a single step starting from α,β‐unsaturated aldehydes and dihydroxyacetone dimer using a chiral secondary amine catalyst (see scheme, TMS=trimethylsilyl). The title reaction sequence proceeds with the generation of four stereogenic centers to deliver bicyclic compounds in good yields and excellent diastereo‐