Enantioselective intramolecular Rauhut–Currier reaction catalyzed by chiral phosphinothiourea
作者:Jing-Jing Gong、Tian-Ze Li、Kun Pan、Xin-Yan Wu
DOI:10.1039/c0cc04412a
日期:——
Chiral organophosphine-catalyzed enantioselective Rauhut-Currier reaction has been disclosed for the first time. With L-valine-derived phosphinothiourea, the intramolecular Rauhut-Currier reaction of bis(enones) was achieved in good yields (up to 99%) with excellent enantioselectivities (up to 99.4% ee).
showed good performance in enantioselectiveintramolecular Rauhut–Currier reaction of bis(enones), giving the corresponding products in good yield with up to 98% ee. Moreover, with amino acid derived amide-phosphine B3, optically active α-methylene-δ-valerolactone was obtained in 88% yield and > 99.9% ee utilizing the enantioselectiveintramolecular Rauhut-Currier reaction of chalcone derivative.