A cinchona alkaloid catalyzed enantioselective sulfa-Michael/aldol cascade reaction of isoindigos: construction of chiral bispirooxindole tetrahydrothiophenes with vicinal quaternary spirocenters.
DOI Number:
10.1039/C5OB00774G
Reaction Category:
Educt:
isoindigos, 1,4-dithiane-2,5-diol
Product:
bispirooxindole tetrahydrothiophenes
Catalyst:
Quinidine Base
Cas No:
56-54-2
Associated Product from Buchler GmbH:
Quinidine Base
Cas No:
56-54-2