A Pd-catalyzed ring-opening sulfonylation of gem-difluorocyclopropanes is reported. This protocol involves C-C bond cleavage, β-F elimination, and allylic coupling to form corresponding 2-fluoroallylic sulfones efficiently with Z-selectivity. Different substrates bearing diverse functional groups are tolerated. Moreover, this method is successfully used for the late-stage derivation of several bioactive
Palladium-catalyzed Hiyama-type cross-coupling reactions of various arenesulfinates with organosilanes were achieved in good to excellent yields under aerobic conditions at 70 °C. Fluoride is essential, and tetrabutylammonium fluoride (TBAF) was shown to be the most efficient additive for these cross-coupling reactions. These cross-coupling reactions of the arenesulfinates provide high yields and show
Pd-catalyzed ligand-free desulfitative Heck reaction with arenesulfinic acid salts under air
作者:Sai Hu、Ping Xia、Kai Cheng、Chenze Qi
DOI:10.1002/aoc.2970
日期:2013.3
Palladium‐catalyzed cross‐coupling reactions of various aryl sulfinic acidsalts with a wide variety of vinyl substrates have been achieved in good to excellent yields under simple aerobic conditions at 70°C with the assistance of Cu(II) salts. The reaction can be accelerated by the combination of DMSO with THF. The reported Matsuda–Heck type coupling reactions are tolerant to the common functional
Palladium-Catalyzed Desulfitative CH Arylation of Heteroarenes with Sodium Sulfinates
作者:Bo Liu、Qiang Guo、Yangyang Cheng、Jingbo Lan、Jingsong You
DOI:10.1002/chem.201102644
日期:2011.11.25
Desulfitative CHarylation: Palladium‐catalyzed desulfitative CHarylation of heteroarenes with sodium sulfinates has been disclosed to construct aryl–heteroaryl bonds without the need for any extra ligands (see scheme).
Facile access to sodium arylsulfinates via nucleophilic C S bond cleavage of 2-(arylsulfonyl)pyrimidines
作者:Yujeong Kwon、Jihong Lee、Dong-Chan Lee、Jeong-Hun Sohn
DOI:10.1016/j.tetlet.2023.154556
日期:2023.6
6-trimethylpyrimidine-2(1H)-thione with aryl iodides followed by oxidation to yield the corresponding pyrimidinyl sulfones, which were converted to the desired sodium sulfinates by the nucleophilic CS cleavage using NaOMe and trituration for isolation and purification.
描述了通过三步序列获得纯净形式的芳基亚磺酸钠的途径,包括4,5,6-三甲基嘧啶-2(1H)-硫酮与芳基碘化物的 Cu 催化 C S 交叉偶联,然后氧化以产生相应的嘧啶基砜,通过使用 NaOMe的亲核 C S 裂解和研磨分离和纯化,将其转化为所需的亚磺酸钠。