A novel route to 2-substituted 1,2-benzisothiazol-3(2H)-ones
作者:Yuzuru Uchida、Seizi Kozuka
DOI:10.1039/c39810000510
日期:——
2-Alkyl- and 2-aryl-1,2-benzisothiazol-3 (2H)-ones were synthesized in high yields by the cyclization of 2-(methylsulphinyl)benzamides with thionyl chloride.
Palladium-Catalyzed CS Activation/Aryne Insertion/Coupling Sequence: Synthesis of Functionalized 2-Quinolinones
作者:Ying Dong、Bangyu Liu、Peng Chen、Qun Liu、Mang Wang
DOI:10.1002/anie.201310340
日期:2014.3.24
The insertion of an aryne into a CS bond can suppress the addition of an S nucleophile to the aryne in the presence of palladium. Catalyzed by Pd(OAc)2, a wide range of α‐carbamoyl ketene dithioacetals readily react with arynes to selectively afford functionalized 2‐quinolinones in high yields under neutral reaction conditions by a CSactivation/aryneinsertion/intramolecular couplingsequence. The
Method for producing alkylsulfinylbenzamides and 1,2-benzisothiazol-3-ones
申请人:SUMITOMO SEIKA CHEMICALS CO., LTD.
公开号:EP0657438A2
公开(公告)日:1995-06-14
A method for producing alkylthiobenzamide of formula (III) by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of an alkylthiobenzamide with a halogen in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent and a subsequent reaction with a halogen; and a method for producing a 1,2-benzisothiazol-3-one of formula (VI) by carrying out a reaction of a 2-(alkylthio)benzamide with a halogenating agent.
A method for producing an alkylthiobenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of an alkylthiobenzamide with a halogen in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent and a subsequent reaction with a halogen; and a method for producing a 1,2-benzisothiazol-3-one by carrying out a reaction of a 2-(alkylthio)benzamide with a halogenating agent.
Silver-Promoted Site-Selective Intramolecular Cyclization of 2-Methylthiobenzamide Through α-C(sp<sup>3</sup>)–H Functionalization
作者:Ke Yang、Ben Niu、Zhiyan Ma、Hui Wang、Brianna Lawrence、Haibo Ge
DOI:10.1021/acs.joc.9b02202
日期:2019.11.1
Silver-mediated intramolecular alpha-C(sp(3))-H bond functionalization of the methylthio group has been established in the presence of Selectfluor as an additive. This novel strategy provides efficient access to various diverse sulfur-based heterocycles with good yields and functional group compatibility. It is noteworthy that the completely novel benzooxathiin-4-imine skeletons were reported for the first time in this study.