Copper Powder Catalyzed Direct Ring-Opening Arylation of Benzazoles with Aryl Iodides in Polyethylene Glycol
作者:Lifang Yao、Qing Zhou、Wei Han、Shaohua Wei
DOI:10.1002/ejoc.201201166
日期:2012.12
The expedient and efficient copperpowdercatalyzeddirectring-openingarylation of benzazoles with aryliodides in polyethyleneglycol that proceeds in the absence of an added ligand has been developed. The protocol provides facile access to 2-(arylthio)anilines and 2-phenoxyanilines in high yields with a wide tolerance of functional groups. Transmission electron microscopy confirmed that the active
Efficient CS Cross-Coupling of Thiols with Aryl Iodides Catalyzed by Cu(OAc)<sub>2</sub>·H<sub>2</sub>O and 2,2′-Biimidazole
作者:Chenglong Zong、Jianli Liu、Shengyan Chen、Runsheng Zeng、Jianping Zou
DOI:10.1002/cjoc.201300830
日期:2014.3
The classical Ullmann CS crosscoupling reaction of aryl iodides with aromatic/alkyl thiols under catalysis of 15 mol% Cu(OAc)2·H2O and 15 mol% 2,2′‐biimidazole works at 80°C in DMSO for 3 h to provide a variety of aryl sulfides in good to excellent yields.
Thiolate-assisted copper(<scp>i</scp>) catalyzed C–S cross coupling of thiols with aryl iodides: scope, kinetics and mechanism
作者:Sneha Prasad Bakare、Mahendra Patil
DOI:10.1039/d2nj00043a
日期:——
Transition metal catalyzed coupling of thiols with aryl iodide offers a convenient method for accessing C–S linkage in organic synthesis. Herein, we report an efficient and practical method for the C–Scrosscoupling of thiophenols with aryl iodides using a Cu(I) catalyst. A diverse set of thiophenols is coupled with electron rich and poor aryl iodides to obtain diaryl sulfides in good to excellent
Chelate resins, which are polystyrene-divinylbenezene-based polymers bearing iminodiacetic acids or polyamines as ligands, supported copper catalysts (Cu/CR11 or Cu/CR20) in effectively catalyzing the ring cleaving S-arylation of benzothiazole with aryl iodides or aryl bromides in the presence of lithium tert-butoxide in aqueous 2-propanol.
Perfluoroalkylsulfonamidoaryl compounds
申请人:Minnesota Mining and Manufacturing Company
公开号:US04005141A1
公开(公告)日:1977-01-25
Phenyl-substituted perfluoroalkanesulfonanilides in which the phenyl rings are linked by sulfur, sulfinyl or sulfonyl and salts thereof in which the rings and the perfluoroalkylsulfonamido nitrogen are optionally substituted. The compounds are active herbicides and some are anti-inflammatory agents and analgesic agents.