Enantioselective Synthesis of Functionalized 4-Aryl Hydrocoumarins and 4-Aryl Hydroquinolin-2-ones via Intramolecular Vinylogous Rauhut-Currier Reaction of para-Quinone Methides.
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DOI: 10.1021/acs.orglett.7b01331
Abstract: A novel strategy for the asymmetric construction of functionalized 4-aryl-3,4-dihydrocoumarins and 4-aryl-3,4-dihydroquinolin-2-ones via an intramolecular vinylogous Rauhut-Currier reaction of para-quinone methides (p-QMs) under the bifunctional catalysis of chiral amine-phosphine is described. This intramolecular mode for… read more here.
Keywords: vinylogous rauhut; via intramolecular; ones via; rauhut currier ... See more keywords
Phosphine-Catalyzed Asymmetric Intermolecular Cross-Vinylogous Rauhut–Currier Reactions of Vinyl Ketones with para-Quinone Methides
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DOI: 10.1021/acscatal.7b00030
Abstract: A chiral amide-phosphine bifunctional catalyst was developed and successfully applied to the asymmetric intermolecular cross-vinylogous Rauhut–Currier of alkyl vinyl ketones with para-quinone methides, offering excellent regioselectivity and stereoselectivity (up to >99% enantiomeric excess (ee)). This… read more here.
Keywords: vinyl ketones; vinylogous rauhut; cross vinylogous; rauhut currier ... See more keywords