Chiral Phosphoric Acid-Catalyzed Enantioselective Construction of 2,3-Disubstituted Indolines
作者:Wei-Yang Ma、Coralie Gelis、Damien Bouchet、Pascal Retailleau、Xavier Moreau、Luc Neuville、Géraldine Masson
DOI:10.1021/acs.orglett.0c03947
日期:2021.1.15
cycloaddition of β-substituted ene- and thioenecarbamates as well as cyclic enamides with quinone diimides catalyzed by a BINOL- and SPINOL-derived phosphoric acid is reported. A wide variety of 2,3-disubstituted 2-aminoindolines, including polycyclic ones, were prepared in generally high yields (up to 98%) with moderate to complete diastereoselectivities and in most cases excellent enantioselectivities
据报道,由BINOL和SPINOL衍生的磷酸催化β-取代的烯和硫代氨基甲酸酯以及对环二酰胺与醌二酰亚胺的高度对映和区域选择性(3 + 2)形式环加成反应。通常以高收率(高达98%),中等至完全非对映选择性以及大多数情况下极好的对映选择性(高达99%ee)制备各种2,3-二取代的2-氨基二氢吲哚,包括多环吲哚。