Synthesis of 2-Thio-Substituted Benzothiazoles via a Domino Condensation/<i>S</i>-Arylation/Heterocyclization Process
作者:Liu Shi、Xiangqian Liu、Hui Zhang、Yongwen Jiang、Dawei Ma
DOI:10.1021/jo200535e
日期:2011.5.20
Condensation of carbon disulfide with thiols in the presence of K2CO3 generates carbonotrithioate salts in situ, which undergo coupling with 2-iodoanilines and subsequent intramolecular condensation and elimination under assistance of CuBr to afford 2-thio-substituted benzothiazoles. Both aliphatic and aromatic thiols are compatible with this process, delivering the corresponding heterocycles with
在K 2 CO 3存在下,二硫化碳与硫醇的缩合原位生成三硫代碳酸盐,将其与2-碘苯胺偶联,随后在CuBr的帮助下进行分子内缩合和消除,得到2-硫基取代的苯并噻唑。脂族和芳族硫醇均与该过程相容,从而提供具有良好多样性的相应杂环。
Palladium‐Catalyzed Insertion of Isocyanides into the C−S Bonds of Heteroaryl Sulfides
作者:Shinya Otsuka、Keisuke Nogi、Hideki Yorimitsu
DOI:10.1002/anie.201802369
日期:2018.5.28
Insertion of tert‐butyl isocyanide into the C(sp2)−S bonds of heteroaryl sulfides is catalyzed by a palladium diphosphine complex. Thioimidates generated through this reaction could be readily hydrolyzed under acidic conditions to yield the corresponding thioesters, which are of synthetic use. This insertion is useful because starting heteroaryl sulfides were readily prepared by either conventional
Mercaptoazole derivatives as lubricating additives
申请人:The Lubrizol Corporation
公开号:US11111451B2
公开(公告)日:2021-09-07
Lubricating compositions comprising a mercaptoazole-acrylic adduct formed by contacting a mercaptoazole compound with an acrylic. The adduct formed has at least one sulfur-alkyl group comprising at least one acyl, or compounds having at least one nitrogen-alkyl group comprising at least one acyl, or mixtures thereof. The lubricating composition also comprises an antiwear agent and an antioxidant. Methods of lubricating an internal combustion engine comprising contacting the internal combustion engine with the lubricating composition comprising a mercaptoazole-acrylic adduct formed by contacting a mercaptoazole compound with an acrylic. Methods of reducing corrosion and/or seal deterioration in an internal combustion engine. The use of a mercaptoazole-acrylic adduct in a lubricating composition to reduce corrosion and/or seal deterioration in an internal combustion engine.
ANTI-PENICILLIN RESISTANT PNEUMOCOCCI AGENT AND NOVEL 16-MEMBERED RING MACROLIDE DERIVATIVE
申请人:Microbial Chemistry Research Foundation
公开号:EP1849796B1
公开(公告)日:2014-11-05
Benzazolin-2-thiones in the michael reaction. 1. Reaction of benzothiazolin- and benzoxazolin-2-thiones with acrylonitrile, acrylamide, and methylacrylate in the presence of acid catalysts