Copper-Catalyzed Asymmetric Propargylic Alkylation with Oxindoles: Diastereo- and Enantioselective Construction of Vicinal Tertiary and All-Carbon Quaternary Stereocenters
作者:Jin-Tao Xia、Xiang-Ping Hu
DOI:10.1021/acs.orglett.9b04621
日期:2020.2.7
stereoselective construction of vicinal tertiary and all-carbon quaternary stereocenters in a 3,3-disubstituted oxindole skeleton has been realized. The reaction proceeded smoothly under the catalysis of Cu(MeCN)4PF6 combined with a chiral tridentate ferrocenyl P,N,N ligand, leading to a broad range of optically active 3,3-disubstituted oxindoles in high yields and with excellent diastereo- and enantioselectivities
已经实现了具有3-取代的羟吲哚的铜催化乙酸炔丙酯的不对称炔丙基烷基化,用于在3,3-二取代的羟吲哚骨架中邻位的叔和全碳四元立体中心的立体选择性构建。反应在Cu(MeCN)4PF6与手性三齿二茂铁基二茂铁基P,N,N配体结合的催化下顺利进行,从而以高收率和极佳的非对映和对映选择性产生了广泛的旋光3,3-二取代的羟吲哚。 。