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| Enantioselective Reduction of Prochiral Ketones Catalyed by Oxazaborolidine Derived from L-Cystine | |
| 摘 要： | Theenantioselectivereductionofpwhralketonesisanimportantorgbocreaction.oneofthesuCCeSSulmethodsisbasedontheuseOfchindl,3,2-o.azaboroidinelpreparedfmpaminOalcoholsusuallyderivedfromQ-aminacids.bonglastdecade,manyaminoaddshavebeenusedinprepchngoxazaborolidinecataIySt,butL-cyStinehasrelativelybeenneglected.WehaveinvestigatedLcySteinederivativesinthempofenantioselectivereductionOfprOChiralke-toneswithborane2'3.Inthispaper,werePOrttwonewchiraloxazaborolidineformedinsituwith&aminoalcohols(pre… |
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