A focused review on the unconventional alkyne activations by ruthenium(II) and osmium(II) complexes supported by 1, 2-bis(diphenylphosphino)methane (dppm). (15th March 2021)

• Record Type: Journal Article
• Authors: Shek, Hau-Lam; Yeung, Chi-Fung; Chung, Lai-Hon; Wong, Chun-Yuen
• Is Part Of: Polyhedron. Volume 197(2021)
• Publication Date: 2021-03-15
• Subjects: Ruthenium -- Osmium -- Alkyne activation -- 1, 2-Bis(diphenylphosphino)methane -- Reaction Mechanisms; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2021.115023
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Recent discoveries suggest the existence of unconventional reaction pathways between cis -[Ru II /Os II (dppm)2 Cl2 ] (dppm = 1, 2-bis(diphenylphosphino)methane) and alkynes. Highlights: Conventional reactivities between alkynes and [Ru/Os(dppm)2 Cl2 ] summarized. Unconventional reactivities between alkynes and [Ru/Os(dppm)2 Cl2 ] highlighted. Mechanistic insights into the Ru/Os-induced alkyne transformations. Abstract: While the activation of alkynes by ruthenium(II) and osmium(II) bis-diphosphine complexes in the form of [Ru II /Os II (P^P)2 X2 ] has been studied for nearly three decades and are known to give a variety of metal−vinylidene, −allenylidene, and −alkynyl complexes, recent findings on the isolation of unprecedented organometallic complexes from alkynes and [Ru II /Os II (P^P)2 X2 ] suggest the existence of unconventional reaction pathways which have been largely overlooked. In this focused review, a brief overview on the conventional reactivities between alkynes and cis -[Ru II /Os II (dppm)2 Cl2 ] (dppm = 1, 2-bis(diphenylphosphino)methane) will first be provided, which is then followed by discussions on the recent discoveries of the unconventional reactivities with emphasis on the mechanistic insights into the Ru/Os-induced alkyne transformations.