在DMF中K 2 CO 3存在下,4-溴-NH -1,2,3-三唑2与烷基卤的反应在区域选择性中产生了相应的2-取代的4-溴-1,2,3-三唑5过程。这些溴化物的随后的Suzuki交叉偶联反应提供了2,4,5-三取代的三唑3的有效合成。另外,通过氢化还原溴代三唑提供了2,4-二取代的三唑8的有效合成。
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.
Process for inhibiting corrosion in aqueous systems with halogen treated aromatic azoles
申请人:ROHM AND HAAS COMPANY
公开号:EP1288336A1
公开(公告)日:2003-03-05
In-situ bromination of aromatic azoles using ppm levels of one or more brominating agents prior to forming a film on a metal surface in an aqueous system and treating deposited unexpectedly effective in improving the chlorine resistance and the corrosion inhibition of the bromine treated aromatic azoles.
In-situ bromination of aromatic azoles using ppm levels of one or more brominating agents prior to forming a film on a metal surface in an aqueous system and treating deposited unexpectedly effective in improving the chlorine resistance and the corrosion inhibition of the bromine treated aromatic azoles.
Structure–activity relationship and enzyme kinetic studies on 4-aryl-1H-1,2,3-triazoles as indoleamine 2,3-dioxygenase (IDO) inhibitors
作者:Qiang Huang、Maofa Zheng、Shuangshuang Yang、Chunxiang Kuang、Cunjing Yu、Qing Yang
DOI:10.1016/j.ejmech.2011.08.044
日期:2011.11
Previously, we have reported the design and synthesis of 4-aryl-1H-1,2,3-triazoles as inhibitors of indoleamine 2,3-dioxygenase (IDO), a promising therapeutic target of cancer. Here, we present the structure-activity relationship and enzyme kinetic studies on a series of 4-aryl-1H-1,2,3-triazoles. Three compounds (1, 6, 8) were found to possess more IDO inhibitory potency than the most commonly used 1-methyltryptophan. The results from the structure-activity relationship and molecular docking studies indicated that an electron-withdrawing group with low steric hindrance near the NH group of triazoles was necessary for the IDO inhibition. (C) 2011 Elsevier Masson SAS. All rights reserved.