Isolation of ruthenium-indoline and -indole zwitterion complexes : Insight into the metal-induced cyclization of aniline-tethered alkynes and strategy to lower the activation barrier of metal-vinylidene formation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

24 Scopus Citations
View graph of relations

Author(s)

  • Lai-Hon Chung
  • Chun-Hong Chiu
  • Jialin Cai

Detail(s)

Original languageEnglish
Pages (from-to)1963-1968
Journal / PublicationOrganometallics
Volume34
Issue number10
Online published7 May 2015
Publication statusPublished - 26 May 2015

Abstract

Isolation of the first examples of Ru(II)-indoline and -indole zwitterion complexes derived from reactions between [Ru([14]aneS4)Cl2] ([14]aneS4 = 1,4,8,11-tetrathiacyclotetradecane) and aniline-tethered alkynes has been achieved. Mechanistic studies regarding the selectivity between a "vinylidene-involving pathway" and a "direct nucleophilic ring closure mechanism" for these reactions have been conducted experimentally and theoretically. Employment of 1,2-silyl shift as a strategy to lower the activation barrier for the formation of Ru-vinylidene species has also been proved to be successful.

Citation Format(s)

Isolation of ruthenium-indoline and -indole zwitterion complexes : Insight into the metal-induced cyclization of aniline-tethered alkynes and strategy to lower the activation barrier of metal-vinylidene formation. / Yeung, Chi-Fung; Chung, Lai-Hon; Lo, Hoi-Shing; Chiu, Chun-Hong; Cai, Jialin; Wong, Chun-Yuen.

In: Organometallics, Vol. 34, No. 10, 26.05.2015, p. 1963-1968.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal