H‐Bonded Counterion‐Directed Catalysis: Enantioselective Gold(I)‐Catalyzed Addition to 2‐Alkynyl Enones as a Case Study
作者:Àlex Martí、Marc Montesinos‐Magraner、Antonio M. Echavarren、Allegra Franchino
DOI:10.1002/ejoc.202200518
日期:2022.10.13
H-bonded counterion-directed catalysis has been applied to the enantioselective tandem cycloisomerization-addition to 2-alkynyl enones. The addition of C-, N- or O-centered nucleophiles catalyzed by a phosphinosquaramide Au(I) chloride/chiral Ag(I) phosphoramidate system afforded bicyclic furans in moderate to excellent yield and enantioselectivity (28 examples, 59–96 % yield, 62 : 38 to 95 : 5 er)
氢键抗衡离子定向催化已应用于 2-炔基烯酮的对映选择性串联环异构化加成。由膦基方酰胺氯化金 (I)/手性氨基磷酸银 (I) 系统催化添加以 C-、N- 或 O-为中心的亲核试剂,以中等至优异的产率和对映选择性提供双环呋喃(28 个实例,产率 59-96%, 62 : 38 到 95 : 5 er)。