Thioetherification via Photoredox/Nickel Dual Catalysis
作者:Matthieu Jouffroy、Christopher B. Kelly、Gary A. Molander
DOI:10.1021/acs.orglett.6b00208
日期:2016.2.19
Hypervalent alkylsilicates represent new and readily accessible precursors for the generation of alkylradicalsunder photoredox conditions. Alkylradicals generated from such silicates serve as effective hydrogen atom abstractors from thiols, furnishing thiyl radicals. The reactive sulfur species generated in this manner can be funneled into a nickel-mediated cross-coupling cycle employing aromatic
1,2-BENZISOTHIAZOL-3-ONE COMPOUND PRODUCTION METHOD
申请人:Hiyama Takehiro
公开号:US20130345433A1
公开(公告)日:2013-12-26
The present invention provides a method for producing 1,2-benzisothiazol-3-one compounds by reacting a 2-(alkylthio)benzonitrile compound with a halogenating agent in the presence of water, the method being characterized in that the reaction proceeds while the halogenating agent and water are gradually and simultaneously added to a reaction system containing the 2-(alkylthio)benzonitrile compound. The invention allows the simple and economical production of highly pure 1,2-benzisothiazol-3-one compounds, which are useful as antimicrobial agents, antifungal agents, etc.
A method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-(alkylthio)benzaldehyde with a hydroxylamine to give a 2-(alkylthio)benzaldehyde oxime and carrying out a reaction of the 2-(alkylthio)benzaldehyde oxime with a halogenating agent; and a method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-halobenzonitrile with an alkanethiol in a heterogeneous solvent system in the presence of a base to give a 2-(alkylthio)benzonitrile and carrying out a reaction of the 2-(alkylthio)benzonitrile with an halogenating agent in the presence of water.
Cyanobenzenesulfenyl halide and process for preparation of 3-substituted benzisothiazole using it
申请人:SUMITOMO SEIKA CHEMICALS CO., LTD.
公开号:EP0741129A2
公开(公告)日:1996-11-06
A 2-cyanobenzenesulphenyl compound is represented by the general formula (I):
wherein X represents Cl or Br and can be used for the preparation of 3-substituted benzisothiazole by reaction of the compound (I) with a piperazine compound. The compound (I) can be prepared by halogenating a 2-cyanophenylthio derivative of the formula (II):
wherein R represents H, alkali metal, 2-cyanophenylthio or C1-4 alkyl.
一种 2-氰基苯基联苯化合物由通式 (I) 表示:
其中 X 代表 Cl 或 Br,可用于通过化合物(I)与哌嗪化合物反应制备 3-取代的苯并异噻唑。化合物 (I) 可以通过卤化式 (II) 的 2-氰基苯硫基衍生物来制备:
其中 R 代表 H、碱金属、2-氰基苯硫基或 C1-4 烷基。
METHOD FOR PRODUCING 1,2-BENZISOTHIAZOL-3-ONE COMPOUND
申请人:Sumitomo Seika Chemicals Co., Ltd.
公开号:EP2687520A1
公开(公告)日:2014-01-22
The present invention provides a method for producing a 1,2-benzisothiazol-3-one compound by reacting a 2-(alkylthio)benzonitrile compound with a halogenating agent in the presence of water, wherein an alkyl halide that is generated as by-product is reacted with a sulfide to form an alkylthiol, which is converted into an alkali metal salt, and then the resulting alkali metal salt is reacted with a 2-halobenzonitrile compound to be converted into a 2-(alkylthio)benzonitrile compound and reused as a starting material for the production of a 1,2-benzisothiazol-3-one compound. By means of the present invention, it is possible to efficiently use the by-product that is generated during the production of a 1,2-benzisothiazol-3-one compound and economically produce a 1,2-benzisothiazol-3-one compound without placing a burden on the environment.