title: CuI-Catalyzed intramolecular aminocyanation of terminal alkynes in N-(2-ethynylphenyl)-N-sulfonylcyanamides via Cu-vinylidene intermediates.
abstract: CuI-Catalyzed intramolecular aminocyanation of terminal alkynes 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 a β-cyano Cu-vinylidene intermediate. Subsequently, the indole ring closure furnished the corresponding 1-sulfonyl-3-cyanoindoles.
authors.affiliation: Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan. tcchien@ntnu.edu.tw.
authors.forename: Zhen-Yuan
authors.initials: ZY
authors.lastname: Liao
authors.affiliation: Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan. tcchien@ntnu.edu.tw.
authors.forename: Pen-Yuan
authors.initials: PY
authors.lastname: Liao
authors.affiliation: Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan. tcchien@ntnu.edu.tw.
authors.forename: Tun-Cheng
authors.initials: TC
authors.lastname: Chien