Accelerated SuFEx Click Chemistry For Modular Synthesis**
作者:Christopher J. Smedley、Joshua A. Homer、Timothy L. Gialelis、Andrew S. Barrow、Rebecca A. Koelln、John E. Moses
DOI:10.1002/anie.202112375
日期:2022.1.21
We report accelerated SuFEx clickchemistry utilizing a synergistic BTMG-HMDS catalytic system. The power and versatility of the reaction are showcased by the SuFEx synthesis of >100 unique molecules from diverse SuFExable hubs. Accelerated SuFEx is a next generation click reaction that improves upon existing protocols and expands the scope of accessible products.
Sulfonate Versus Sulfonate: Nickel and Palladium Multimetallic Cross-Electrophile Coupling of Aryl Triflates with Aryl Tosylates
作者:Kai Kang、Liangbin Huang、Daniel J. Weix
DOI:10.1021/jacs.0c04670
日期:2020.6.17
While phenols are frequent and convenient aryl sources in cross-coupling, typically as sulfonate esters, the direct cross-Ullmann coupling of two different sulfonate esters is unknown. We report here a general solution to this chal-lenge catalyzed by a combination of Ni and Pd with Zn reductant and LiBr as an additive. The reaction has broad scope, as demonstrated in 33 examples (65% ± 11% ave yield)
The cross-coupling of aryl arenesulfonates with dialkoxyboranes proceeded in the presence of Bu4NI and a catalytic amount of [Pd(dba)2]/1,1′-bis(di-tert-butylphosphano)ferrocene, giving good yields...
Metal-Free Oxidative Formation of Aryl Esters by Catalytic Coupling of Acyl and Sulfonyl Chlorides with Arylboronic Acids
作者:Fang Liu、Akbar Sohail、Keyume Ablajan
DOI:10.1021/acs.joc.3c01151
日期:2024.1.5
synthesis of arylesters was developed through metal-free oxidation. This reaction employs stable and readily available acyl or sulfonyl chlorides and arylboronicacids as the starting materials and proceeds under mild reaction conditions without additional precious metal catalysts. This new strategy exhibits broad substrate tolerance and operational simplicity and gives diverse arylesters in moderate