Mechanistic Studies of the Palladium-Catalyzed Desulfinative Cross-Coupling of Aryl Bromides and (Hetero)Aryl Sulfinate Salts
作者:Antoine de Gombert、Alasdair I. McKay、Christopher J. Davis、Katherine M. Wheelhouse、Michael C. Willis
DOI:10.1021/jacs.9b13260
日期:2020.2.19
Pyridine and related heterocyclic sulfinates have recently emerged as effective nucleophilic coupling partners in palladium-catalyzedcross-coupling reactions with (hetero)aryl halides. These sulfinate reagents are straightforward to prepare, stable to storage and coupling reaction conditions, and deliver efficient reactions, thus offering many advantages, compared to the corresponding boron-derived
Pyridine sulfinates as general nucleophilic coupling partners in palladium-catalyzed cross-coupling reactions with aryl halides
作者:Tim Markovic、Benjamin N. Rocke、David C. Blakemore、Vincent Mascitti、Michael C. Willis
DOI:10.1039/c7sc00675f
日期:——
Pyridine rings are ubiquitous in drug molecules; however, the pre-eminent reaction used to form carbon–carbon bonds in the pharmaceutical industry, the Suzuki–Miyaura cross-couplingreaction, often fails when applied to these structures. This phenomenon is most pronounced in 2-substituted pyridines, and results from the difficulty in preparing, the poor stability of, and low efficiency in reactions
Transition-Metal-Free Desulfinative Cross-Coupling of Heteroaryl Sulfinates with Grignard Reagents
作者:Jun Wei、Huamin Liang、Chuanfa Ni、Rong Sheng、Jinbo Hu
DOI:10.1021/acs.orglett.8b03918
日期:2019.2.15
A mild cross-coupling reaction of heteroaryl sulfinates with Grignardreagents has been developed under transition-metal-free conditions. This study provides an example of the SO22– as a leaving group in an aromatic system and an effective methodology for the construction of C–C bond.
Copper-Free Palladium-Catalysed Desulfinative Homocoupling of Sodium Arylsulfinates under Mild and Aerobic Conditions
作者:Wei Zhang
DOI:10.3184/174751916x14798135087600
日期:2017.1
A Pd(II)-catalysed homocoupling of sodium arylsulfinates has been successfully achieved under mild conditions. This transformation is a new method for the homocoupling reaction of sodium arylsulfinates, thus providing an alternative synthesis of symmetric biaryls. The reported homocoupling reaction is tolerant to many common functional groups, such as ester, halo, cyano and nitro and works well in