The N-heterocyclic carbene-catalyzed enantioselective intramolecular benzoin reaction of N-tethered substrates was realized. With 15 mol % of d-camphor-derived triazolium salt E and 10 mol % of NaOAc, the aldehyde-ketone cross benzoin reactions of various substituted N-tethered substrates proceeded smoothly to afford dihydroquinolinone derivatives with a quaternary carbon stereocenter in moderate to good yields and excellent ee.
Jia, Min-Qiang,You, Shu-Li
p. 622 - 624
(2013/05/09)
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