Asymmetric synthesis of spiro[4H-chromene-3,3′-oxindoles] via a squaramide-organocatalytic three-component cascade Knoevenagel/Michael/cyclization sequence.
DOI Number:
10.1007/s11030-024-10852-6
Reaction Category:
Educt:
1-benzyl-5-bromoindoline-2,3-dione, malononitrile, benzo[d][1,3]dioxol-5-ol
Product:
spiro[4H-chromene-3,3′-oxindoles]
Catalyst:
3-[[3,5-Bis(trifluoromethyl)phenyl]amino]-4-[[(9R)-6′-methoxycinchonan-9-yl]amino]-3-cyclobutene-1,2-dione
Cas No:
1256245-79-0
Associated Product from Buchler GmbH:
3-[[3,5-Bis(trifluoromethyl)phenyl]amino]-4-[[(9R)-6′-methoxycinchonan-9-yl]amino]-3-cyclobutene-1,2-dione
Cas No:
1256245-79-0