Synthesis of chiral spiro-cyclopentene/cyclopentadiene-oxindoles through an asymmetric [3+2] cycloaddition of isatin-derived MBH carbonates and β,γ-unsaturated α-keto esters.
DOI Number:
10.1016/j.tet.2019.04.040
Reaction Category:
Educt:
isatin-derived MBH carbonates, β,γ-unsaturated α-keto esters
Product:
spiro-cyclopentene/cyclopentadiene-oxindoles
Catalyst:
(3α,9S)-3,9-epoxy-10,11-dihydro-cinchonan-6′-ol
Cas No:
253430-48-7
Associated Product from Buchler GmbH:
Dihydrocupreidine Base
Cas No:
73522-75-5