Access to (<i>Z</i>)-β-Substituted Enamides from <i>N</i>1-H-1,2,3-Triazoles
作者:Tao Wang、Zongyuan Tang、Han Luo、Yi Tian、Mingchuan Xu、Qixing Lu、Baosheng Li
DOI:10.1021/acs.orglett.1c02087
日期:2021.8.20
A direct ring-opening/nucleophilic substitution reaction of N1-H-1,2,3-triazoles has been described. Divergent (Z)-β-halogen- or sulfonyl-substituted enamides could be stereospecifically synthesized in a tunable manner. This strategy might not only enable a new ring-opening method of N1-H-1,2,3-triazoles under nonmetal catalysis and mild reaction conditions but also offer a good opportunity to reliably
已经描述了N 1-H-1,2,3-三唑的直接开环/亲核取代反应。发散的 ( Z )-β-卤素或磺酰基取代的烯酰胺可以以可调的方式立体定向合成。这种策略不仅可以在非金属催化和温和的反应条件下实现N 1-H-1,2,3-三唑的新开环方法,而且还为可靠地获得多功能 ( Z )-β-取代的烯酰胺提供了良好的机会可用作进一步合成转化的合成前体。
Direct Synthesis of 4-Aryl-1,2,3-triazoles via I<sub>2</sub>-Promoted Cyclization under Metal- and Azide-Free Conditions
We herein report an iodine-mediated formal [2 + 2 + 1] cyclization of methylketones, p-toluenesulfonyl hydrazines, and 1-aminopyridinium iodide for preparation of 4-aryl-NH-1,2,3-triazoles under metal- and azide-free conditions. Notably, this is achieved using p-toluenesulfonyl hydrazines and 1-aminopyridinium iodide as azide surrogates, providing a novel route toNH-1,2,3-triazoles. Furthermore, this
[EN] HETEROCYCLIC COMPOUNDS AS INHIBITORS OF MONOACYLGLYCEROL LIPASE (MAGL)<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES EN TANT QU'INHIBITEURS DE LA MONOACYLGLYCÉROL LIPASE (MAGL)
申请人:HOFFMANN LA ROCHE
公开号:WO2020207941A1
公开(公告)日:2020-10-15
The application relates to heterocyclic compounds of the general formula (I), compositions comprising such compounds, a process for preparing these compounds and their medical use. The compounds act as monoacylglycerol lipase (MAGL) inhibitors and are useful in the treatment of neuroinflammation, neurodegenerative diseases, pain, cancer or mental disorders.
Copper-Catalyzed Synthesis of 4-Aryl-1H-1,2,3-triazoles from 1,1-Dibromoalkenes and Sodium Azide
作者:Xiaokun Wang、Chunxiang Kuang、Qing Yang
DOI:10.1002/ejoc.201101204
日期:2012.1
A new methodology for the Cu-catalyzed synthesis of 1H-1,2,3-triazoles from1,1-dibromoalkenes and sodiumazide is presented. Aryl dibromoolefins were efficiently converted into the corresponding 1,2,3-triazoles. A comprehensive number of functional groups were compatible with this reaction. 1,2,3-Triazoles were obtained in moderate to excellent yields.