25445-77-6Relevant articles and documents
Diiiodine/Potassium Persulfate Mediated Synthesis of 1,2,3-Thiadiazoles from N -Tosylhydrazones and a Thiocyanate Salt as a Sulfur Source under Transition-Metal-Free Conditions
Lu, Yuhan,Sun, Yadong,Abdukader, Ablimit,Liu, Chenjiang
supporting information, p. 1044 - 1048 (2021/05/05)
A highly efficient method for the synthesis of 1,2,3-thiadiazoles has been developed by utilizing readily available tosylhydrazones and ammonium thiocyanate with ecofriendly EtOH as the solvent at room temperature. The reaction shows a wide scope of subst
Synthesis method of 1, 2, 3-thiadiazole derivative
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Paragraph 0109-0140, (2021/08/28)
The invention belongs to the technical field of compound preparation, and discloses a synthesis method of a 1, 2, 3-thiadiazole derivative. The synthesis method of the 1, 2, 3-thiadiazole derivative comprises the following steps: taking an N-tosylhydrazon
Selective transformations of 2-(p-toluenesulfonyl)-N-tosylhydrazones to substituted 1,2,3-thiadiazoles
Feng, Yijiao,He, Jing,Li, Weiwei,Yang, Zhen,Wei, Yueting,Liu, Ping,Zhao, Jixing,Gu, Chengzhi,Wang, Wenli
supporting information, (2020/12/09)
Selective transformations of 2-(p-toluenesulfonyl)-N-tosylhydrazones with different sulfur sources have been established. A series of 4-aryl-1,2,3-thiadiazoles and novel 4-aryl-5-tosyl-1,2,3-thiadiazoles were selectively constructed by the adjustment of reaction conditions. These protocols feature short reaction time, good compatibility of functional group, easily available materials, and good selectivity.
I2/CuCl2-promoted one-pot three-component synthesis of aliphatic or aromatic substituted 1,2,3-thiadiazoles
Wang, Can,Geng, Xiao,Zhao, Peng,Zhou, You,Wu, Yan-Dong,Cui, Yan-Fang,Wu, An-Xin
supporting information, p. 8134 - 8137 (2019/07/15)
An efficient I2/CuCl2-promoted one-pot three-component strategy for the construction of 1,2,3-thiadiazoles from aliphatic- or aromatic-substituted methyl ketones, p-toluenesulfonyl hydrazide, and potassium thiocyanate has been develo
Preparation method of thiadiazole containing aryl group and alkyl group
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Paragraph 0020-0024, (2019/08/30)
The invention discloses a preparation method of thiadiazole containing an aryl group and an alkyl group. Methyl ketone, p-toluenesulfonhydrazide and potassium thiocyanate which are used as a substrateundergo a three-component one-pot reaction in DMSO used
Metal- and Oxidant-free Electrosynthesis of 1,2,3-Thiadiazoles from Element Sulfur and N-tosyl Hydrazones
Mo, Shi-Kun,Teng, Qing-Hu,Pan, Ying-Ming,Tang, Hai-Tao
supporting information, p. 1756 - 1760 (2019/02/24)
A metal- and oxidant-free electrochemical method for synthesizing 1,2,3-thiadiazoles by inserting element sulfur into N-tosyl hydrazones is reported. This electrochemical transformation engages electrons as reagents to achieve redox processes, and avoid e
Perylenequinonoid-Catalyzed [4 + 1] and [4 + 2] Annulations of Azoalkenes: Photocatalytic Access to 1,2,3-Thiadiazole/1,4,5,6-Tetrahydropyridazine Derivatives
Zhang, Yan,Cao, Yuan,Lu, Liushen,Zhang, Shiwei,Bao, Wenhao,Huang, Shuping,Rao, Yijian
supporting information, p. 7711 - 7721 (2019/06/17)
Nitrogen-containing heterocycles are especially considered "privileged" structural scaffolds for the development of new drugs. However, traditional methods of organic synthesis are mainly based on thermal cycloaddition reaction; thus, the exploration of n
Cascade Trisulfur Radical Anion (S3?-) Addition/Electron Detosylation Process for the Synthesis of 1,2,3-Thiadiazoles and Isothiazoles
Liu, Bei-Bei,Bai, Hui-Wen,Liu, Huan,Wang, Shun-Yi,Ji, Shun-Jun
, p. 10281 - 10288 (2018/07/25)
Trisulfur radical anion (S3?-) mediated reactions with in situ formed azoalkenes and α,β-usaturated N-sulfonylimines for the construction of 1,2,3-thiadiazoles and isothiazoles has been developed. S3?- is in situ generated from potassium sulfide in DMF. These two approaches provide a new, safe, and simple way to construct 4-subsituted 1,2,3-thiadiazoles, 5-subsituted 1,2,3-thiadiazoles, and isothiazole in good yields. The reactions include the formation of the new C-S and N-S bonds via S3?- addition and electron detosylation under mild conditions.
Stereochemistry and mechanistic insights in the [2t + 2i + 2i] annulations of thioketenes and imines
He, Wei,Zhuang, Junpeng,Du, Hongguang,Yang, Zhanhui,Xu, Jiaxi
, p. 9424 - 9432 (2017/11/22)
Stereochemical models and mechanistic insights are proposed for [2t + 2i + 2i] annulations of thioketenes and imines on the basis of experimental and computational investigations. In the [2t + 2i + 2
Coupled Flavin-Iodine Redox Organocatalysts: Aerobic Oxidative Transformation from N-Tosylhydrazones to 1,2,3-Thiadiazoles
Ishikawa, Tatsuro,Kimura, Maasa,Kumoi, Takuma,Iida, Hiroki
, p. 4986 - 4989 (2017/08/17)
A bioinspired two-component redox organocatalyst system using 1,10-bridged flavinium and NH4I was developed to perform environmentally friendly aerobic oxidative ring formation of 1,2,3-thiadiazoles from N-tosylhydrazones and sulfur. The redox