CuI-Catalyzed Coupling Reactions of Aryl Iodides and Bromides with Thiols Promoted by Amino Acid Ligands
作者:Lei Liu、Qing-Xiang Guo、Wei Deng、Yan Zou、Ye-Feng Wang
DOI:10.1055/s-2004-825584
日期:——
Novel mild conditions for the CuI-catalyzed coupling reactions of aryl iodides and bromides with aliphatic and aromatic thiols using amino acids as the ligand are reported.
Photoredox Nickel-Catalyzed C–S Cross-Coupling: Mechanism, Kinetics, and Generalization
作者:Yangzhong Qin、Rui Sun、Nikolas P. Gianoulis、Daniel G. Nocera
DOI:10.1021/jacs.0c11937
日期:2021.2.3
self-sustained productive Ni(I/III) cycle leading to a quantum yield Φ > 1; (ii) found that pyridinium iodide, formed in situ, serves as the dominant quencher for the excited state photocatalyst and a critical redox mediator to facilitate the formation of the active Ni(I) catalyst; and (iii) observed critical intermediates and determined the rate constants associated with their reactivity. Not only do the findings
efficient method is a green and practical way for the preparation of the thioethers, for it tolerates a wide range of substrates such as aryl and alkyl thiols, as well as benzylic, allylic, secondary, tertiary, and even the less reactive aliphatic alcohols.
Photoredox Mediated Nickel Catalyzed Cross-Coupling of Thiols With Aryl and Heteroaryl Iodides via Thiyl Radicals
作者:Martins S. Oderinde、Mathieu Frenette、Daniel W. Robbins、Brian Aquila、Jeffrey W. Johannes
DOI:10.1021/jacs.5b11244
日期:2016.2.17
Ni-catalyzed cross-couplings of aryl, benzyl, and alkyl thiols with aryl and heteroaryl iodides were accomplished in the presence of an Ir-photoredox catalyst. Highly chemoselective C-Scross-coupling was achieved versus competitive C-O and C-Ncross-couplings. This C-Scross-coupling method exhibits remarkable functional group tolerance, and the reactions can be carried out in the presence of molecular
Zinc-Catalyzed Synthesis of Dithioacetals through Double Hydrosulfenylation of Alkynes by Thiols
作者:Nobukazu Taniguchi、Kenji Kitayama
DOI:10.1055/s-0037-1610302
日期:2018.12
various solvents, and the corresponding products are obtained regioselectively. Dihydrosulfenylation of alkynes with thiols can also be achieved by using a zinc catalyst, and the reaction is preferentially promoted over monohydrosulfenylation. The reaction can also give dithioacetals regioselectively in excellent yields.