Transition-metal-free regioselective construction of 1,5-diaryl-1,2,3-triazoles through dehydrative cycloaddition of alcohols with aryl azides mediated by SO2F2
Base-mediated reaction of vinyl bromides with aryl azides: one-pot synthesis of 1,5-disubstituted 1,2,3-triazoles
作者:Luyong Wu、Yuxue Chen、Jianheng Luo、Qi Sun、Mingsheng Peng、Qiang Lin
DOI:10.1016/j.tetlet.2014.03.029
日期:2014.7
been investigated in the process. A variety of 1,5-disubstituted triazoles were prepared in low to good yields. Further studies reveal that the corresponding alkynes were produced as intermediates via elimination reaction. Under the same reaction conditions, the reactions of alkyl alkynes with phenyl azide would give 1,5-disubstituted1,2,3-triazoles.
Ruthenium-Catalyzed Cycloaddition of Aryl Azides and Alkynes
作者:Lars Kyhn Rasmussen、Brant C. Boren、Valery V. Fokin
DOI:10.1021/ol701912s
日期:2007.12.1
The formation of 1,5-disubstituted 1,2,3-triazoles from arylazides and alkynes was readily accomplished using [Cp*RuCl]4 catalyst in dimethylformamide. It was also demonstrated that the reaction provided higher yields, cleaner product, and shorter reaction times when carried out under microwave irradiation.
Potassium tert-Butoxide Promoted Cycloaddition Reaction for the Synthesis of 1,5-Disubstituted 1,2,3-Triazoles from Aromatic Azides and Trimethylsilyl-Protected Alkynes
作者:Luyong Wu、Yuxue Chen、Mi Tang、Xinming Song、Guangying Chen、Xiaoping Song、Qiang Lin
DOI:10.1055/s-0031-1291042
日期:2012.6
cycloaddition reaction of aromatic azides and trimethylsilyl alkynes upon treatment with desilylating reagents was investigated. In the process, the use of t-BuOK in wet DMF generated 1,5-disubstituted1,2,3-triazoles regioselectively in moderate to good yields at ambient temperature.
Design and applications of new phosphine-free tetradentate Pd-catalyst: Regioselective C–H activation on 1-substituted 1,2,3-triazoles and indoles(NH-Free)
作者:Sarma V. Markandeya、Ch. Renuka、Parvathi K. Lakshmi、A. Rajesh、Chidara Sridhar、Korupolu Raghu Babu
DOI:10.1080/00397911.2017.1381260
日期:2018.1.17
ABSTRACT This article describes the synthesis of a new phosphine free tetradentate Pd catalyst using dl-2,3-diaminopropionic acid. The complex was characterized by Mass, IR, and 1H NMR. The catalyst is air stable at room temperature and non-hygroscopic. Application of this new catalyst to regioselective C–H activation on 1-substituted 1,2,3-triazole and indoles with aryl iodides to get corresponding
Ruthenium-catalyzed cycloaddition of alkynes and organic azides
申请人:Fokin Valery
公开号:US08372986B2
公开(公告)日:2013-02-12
A convenient process for the regioselective synthesis of 1,5-disubstituted 1,2,3-triazoles and 1,4,5-trisubstituted 1,2,3-triazoles from organic azides and alkynes employs catalytic ruthenium.