Spirocyclization/double Michael Addition, 3-(substituted methylene) oxindoles, tert-butyl (E)-3-(substituted-methylene)-2,5-dioxopyrrolidine-1-carboxylates, spirocyclic oxindoles, 3-[[3,5-Bis(trifluoromethyl)phenyl]amino]-4- [[(8α,9S)-10,11-dihydro-6′-methoxycinchonan- 9-yl]amino]-3-Cyclobutene-1,2-dione, Dihydroquinine Derivative

Organocatalytic cascade Michael/Michael reaction for the asymmetric synthesis of spirooxindoles containing five contiguous stereocenters.

10.1039/C6CC00705H

3-(substituted methylene) oxindoles, tert-butyl (E)-3-(substituted-methylene)-2,5-dioxopyrrolidine-1-carboxylates

spirocyclic oxindoles

3-[[3,5-Bis(trifluoromethyl)phenyl]amino]-4- [[(8α,9S)-10,11-dihydro-6′-methoxycinchonan- 9-yl]amino]-3-Cyclobutene-1,2-dione

1352957-59-5

Dihydroquinine Base

522-66-7