Alkoxyl Radical-Mediated Ring Expansion/1,4-Difunctionalization of 1,3-Enynes upon Copper Catalysis
Hong-Jie Miao, Jinhua Zhang, Shuai Liu, Wenhong Wang, Xu Yang, Xin‐Hua Duan, Li‐Na Guo
Abstract
A redox-neutral copper-catalyzed cascade reaction involving alkoxyl radical-mediated ring expansion/1,4-difunctionalization of 1,3-enynes was developed, offering a straightforward approach to the tetra-substituted allenes with macrolactone, CN, and CF 3 functional groups. Remarkably, incorporation of the NH 2 group onto the 1,3-enyne moiety enabled further cyclization to give a unique scaffold containing a lactone and an indole moiety.
Topics & Concepts
ChemistryMoietyEnyneAlkoxy groupRing (chemistry)CatalysisIndole testCombinatorial chemistryRedoxStereochemistryCopperMedicinal chemistryOrganic chemistryAlkylCatalytic C–H Functionalization MethodsCatalytic Cross-Coupling ReactionsCatalytic Alkyne Reactions