Highly enantioselective direct vinylogous Michael addition of γ-substituted deconjugated butenolides to maleimides catalyzed by chiral squaramides.

DOI Number:

10.1039/C3RA43344G

Reaction Category:

RXNO ID:

RXNO_0000009

Educt:

maleimides, γ-aryl-substituted deconjugated butenolides

Product:

chiral butenolides with adjacent quaternary and tertiary stereocenters

Catalyst:

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

Cas No:

1256245-84-7

Associated Product from Buchler GmbH:

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

Cas No:

1256245-84-7