Enantioselective Alkenylation of Aldimines Catalyzed by a Rhodium–Diene Complex
作者:Zhe Cui、Ya-Jing Chen、Wen-Yun Gao、Chen-Guo Feng、Guo-Qiang Lin
DOI:10.1021/ol5000154
日期:2014.2.7
An efficient rhodium-catalyzed asymmetric addition reaction of potassiumalkenyltrifluoroborates to N-nosylaldimines has been developed. Under optimal conditions, the reactions proceeded with good to excellent yields and excellent enantioselectivities (97 → 99% ee). The utility of this method is demonstrated by the formal synthesis of (−)-aurantioclavine.
asymmetric allylic decarboxylative addition and cyclization of N-nosylimines with vinylethylene carbonates (VECs), in the presence of [Rh(C2H4)2Cl]2, chiral sulfoxide-N-olefin tridentate ligand has been developed. The reaction of VECs with various substituted N-nosylimines proceeded smoothly under mild conditions, providing highly functionalizedoxazolidine frameworks in good to high yields with good to