Metal-free I<sub>2</sub>O<sub>5</sub>-mediated direct construction of sulfonamides from thiols and amines
作者:Minghui Zhu、Wei Wei、Daoshan Yang、Huanhuan Cui、Leilei Wang、Guoqing Meng、Hua Wang
DOI:10.1039/c7ob00668c
日期:——
A simple and convenient method has been developed for the construction of sulfonamides via I2O5-mediated sulfonylation of amines with arylthiols. The present protocol provides an attractive approach to sulfonamides in moderate to good yields from readily accessible and easy to handle starting materials under mild and metal-free conditions.
Sulfonamide formation from sodium sulfinates and amines or ammonia under metal-free conditions at ambient temperature
作者:Kai Yang、Miaolin Ke、Yuanguang Lin、Qiuling Song
DOI:10.1039/c4gc02236j
日期:——
A novel, practical and highly efficient method for the construction of a variety of sulfonamides mediated by I2 was demonstrated. The reaction proceeds readily at roomtemperature using a variety of sodium sulfinates and amines or ammonia in water in a metal-, base-, ligand-, or additive-free protocol. Primary, secondary and tertiary sulfonamides were obtained in good to excellent yields with a broad
Copper-catalyzed electrophilic amination of sodium sulfinates at room temperature
作者:Haibo Zhu、Yajing Shen、Qinyue Deng、Tao Tu
DOI:10.1039/c5cc06069a
日期:——
By using O-benzoyl hydroxylamines as amine source, the first convenient copper-catalyzed electrophilic amination of sodium sulfinates has been realized. Even with 2 mol% catalyst loading, the protocol provided an efficient...
Sulfuric chloride is used as the source of the –SO2– group in a palladium-catalyzed three-component synthesis of sulfonamides. Suzuki–Miyaura coupling between the in situ generated sulfamoyl chlorides and boronic acids gives rise to diverse sulfonamides in moderate to high yields with excellent reaction selectivity. Although this transformation is not workable for primary amines or anilines, the results