CuI-Catalyzed intramolecular aminocyanation of terminal alkynes in N-(2-ethynylphenyl)-N-sulfonylcyanamides via Cu–vinylidene intermediates
作者:Zhen-Yuan Liao、Pen-Yuan Liao、Tun-Cheng Chien
DOI:10.1039/c6cc08601b
日期:——
CuI-catalyzed Intramolecular aminocyanation of terminalalkynes in N-(2-ethynylphenyl)-N-sulfonylcyanamides was initiated by the formation of Cu-acetylide to trigger N-CN bond cleavage of the N-sulfonylcyanamide moiety followed by CN migration to form...
Oxidative Addition to the N–C Bond Vs Formation of the Zwitterionic Intermediate in Platinum(II)–Catalyzed Intramolecular Annulation of Alkynes to Form Indoles: Mechanistic Studies and Reaction Scope
Pt(II)-catalyzed intramolecular translocation annulation of ortho-alkynylamides to the formation of indoles is presented, where a proposed intermediacy of zwitterionic intermediate has been substantiated over the oxidative addition. We focused our attention on Pt(II)-catalyzed aminoacylation of alkynes both theoretically and experimentally using low boiling solvent where the formation of deacylation