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Synlett 1997; 1997(1): 79-80
DOI: 10.1055/s-1997-718
DOI: 10.1055/s-1997-718
letter
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Asymmetric Hetero Diels-Alder Reaction Catalyzed by Chiral Ytterbium(III) Phosphate{Yb[(R)-(-)-BNP]3}: Remarkable Ligand Effect on the Enantioselectivity
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Publikationsverlauf
Publikationsdatum:
22. März 2004 (online)
2,6-Lutidine was found to be an effective additive for the chiral ytterbium(III) phosphate {Yb[(R)-(-)-BNP]3}-catalyzed asymmetric hetero Diels-Alder reaction thus achieving high enantioselectivity (up to 93% ee) at room temperature.
chiral rare earth Lewis acid - catalytic asymmetric hetero Diels Alder reaction - tris[(R)-(-)-1,1'-binaphthyl-2,2'-diylphosphato]ytterbium(III) 2,6-lutidine - Danishefsky's diene