Controlling Chemoselectivity in Ruthenium (II)‐Induced Cyclization of Aniline‐Functionalized Alkynes

KW Io, HL Shek, TY Li, KK Li, DSH Chan… - … A European Journal, 2024 - Wiley Online Library
The cyclization of heteroatom‐functionalized alkynes induced by d6‐transition‐metal
centers has traditionally been associated with the vinylidene pathway. However, recent …

Ruthenium (II) and osmium (II) complexes bearing bipyridine and the N-heterocyclic carbene-based C^ N^ C pincer ligand: an experimental and density functional …

LH Chung, KS Cho, J England, SC Chan… - Inorganic …, 2013 - ACS Publications
Ruthenium (II) and osmium (II) complexes [M (C^ N^ C)(N^ N) L] n+(L= Cl–, n= 1; L=
CH3CN, t-BuNC, n= 2) containing a neutral tridentate N-heterocyclic carbene (NHC)-based …

Emissive Osmium(II) Complexes Supported by N-Heterocyclic Carbene-based CCC-Pincer Ligands and Aromatic Diimines

LH Chung, SC Chan, WC Lee, CY Wong - Inorganic Chemistry, 2012 - ACS Publications
Osmium (II) complexes containing N-heterocyclic carbene (NHC)-based pincer ligand 1, 3-
bis (1-methylimidazolin-2-ylidene) phenyl anion (C1∧ C∧ C1) or 1, 3-bis (3 …

Synthesis, Spectroscopic and Theoretical Studies of Ruthenafuran and Osmafuran Prepared by Activation of Ynone in Alcohol

WK Tsui, LH Chung, WH Tsang, CF Yeung… - …, 2015 - ACS Publications
Ruthenafuran and osmafuran monocationic complexes [Ru ([14] aneS4)(C∧ O)]+ or [M
(bpy) 2 (C∧ O)]+(C∧ O= anionic bidentate chelate [C (OR) CHC (Ph) O]−;[14] aneS4= 1 …

Ruthenium‐Induced Alkyne Cycloisomerization: Construction of Metalated Heterocycles, Revelation of Unconventional Reaction Pathways, and Exploration of …

LH Chung, CY Wong - Chemistry–A European Journal, 2019 - Wiley Online Library
While the fascinating chemistry demonstrated by metalated N‐heterocyclic carbene (NHC)
complexes highlights the significance of metalated heterocyclic chemistry, the development …

Isolation of ruthenium–indoline and− indole zwitterion complexes: insight into the metal-induced cyclization of aniline-tethered alkynes and strategy to lower the …

CF Yeung, LH Chung, HS Lo, CH Chiu, J Cai… - …, 2015 - ACS Publications
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 …

Isolation of Ruthenium–Indolizine Complexes: Insight into the Metal-Induced Cycloisomerization of Propargylic Pyridines

LH Chung, CY Wong - Organometallics, 2013 - ACS Publications
A class of ruthenium–indolizine complexes was isolated and structurally characterized, and
they represent the first examples of metalated indolizine species. Both experimental and …

Metal–indolizine zwitterion complexes as a new class of organometallic material: a spectroscopic and theoretical investigation

LH Chung, CF Yeung, DL Ma, CH Leung… - …, 2014 - ACS Publications
Indolizine zwitterion coordinated metal species have been commonly proposed as
intermediates in the mechanisms of metal-catalyzed cycloisomerization of propargylic …

Ruthenium nitrosyl complexes with 1, 4, 7-trithiacyclononane and 2, 2′-bipyridine (bpy) or 2-phenylazopyridine (pap) coligands. Electronic structure and reactivity …

P De, S Maji, AD Chowdhury, SM Mobin… - Dalton …, 2011 - pubs.rsc.org
The present article describes ruthenium nitrosyl complexes with the {RuNO} 6 and {RuNO} 7
notations in the selective molecular frameworks of [RuII ([9] aneS3)(bpy)(NO+)] 3+(43+),[RuII …

Energy Dependence of the Ruthenium (II)-Bipyridine Metal-to-Ligand-Charge-Transfer Excited State Radiative Lifetimes: Effects of ππ*(bipyridine) Mixing

RA Thomas, CN Tsai, S Mazumder, IC Lu… - The Journal of …, 2015 - ACS Publications
The variations in band shape with excited state energy found for the triplet metal to ligand
charge transfer (3MLCT) emission spectra of ruthenium-bipyridine (Ru-bpy) chromophores …