Azide/Alkyne Resins for Quick Preparation of 1,4-Disubstituted 1,2,3-Triazoles
作者:Uthaiwan Sirion、Jae-Hak Lee、Yu-Jin Bae、Hee-Jun Kim、Byoung-Se Lee、Dae-Yoon Chi
DOI:10.5012/bkcs.2010.31.7.1843
日期:2010.7.20
An efficient method for the preparation of 1,4-disubstituted 1,2,3-triazole compounds is described using polymericquaternaryammonium salts having azide or alkyne functionality to remove unreacted excess starting molecules (azide/alkyne). Copper metal could easily be removed by simple filtration with a short Na 2 SO 4 /silica cartridge, affording highly regioselective products in high yield and excellent
描述了一种制备 1,4-二取代 1,2,3-三唑化合物的有效方法,该方法使用具有叠氮化物或炔烃官能团的聚合季铵盐去除未反应的过量起始分子(叠氮化物/炔烃)。使用短的 Na 2 SO 4 /硅胶柱可以通过简单的过滤轻松去除铜金属,无需后处理、萃取和色谱纯化即可获得高产率和高纯度的高区域选择性产品。
Self-Assembled Polymeric Pyridine Copper Catalysts for Huisgen Cycloaddition with Alkynes and Acetylene Gas: Application in Synthesis of Tazobactam
作者:Hao Hu、Aya Ohno、Takuma Sato、Toshiaki Mase、Yasuhiro Uozumi、Yoichi M. A. Yamada
DOI:10.1021/acs.oprd.8b00429
日期:2019.4.19
Novel convoluted polymeric pyridine copper(I) catalysts PVPy-Cu were developed for the Huisgen cyclization of organic azides using alkynes and acetylene gas. They were readily prepared based on our molecular convolution of CuSO4·5H2O and poly(4-vinylpyridine) (PVPy) in the presence of sodium ascorbate with and without various sodium salts in water. Their structural investigation was conducted using
Readily prepared copper nanoparticles were found to catalyse the 1,3-dipolar cycloaddition of azides and alkynes up to rates comparable to those of microwave chemistry. Both the preparation of the nanoparticles and the click reaction are carried out under mild conditions, in short reaction times and in the absence of any stabilising additive or ligand. A variety of 1,2,3-triazoles were prepared in
Micellar promoted multi-component synthesis of 1,2,3-triazoles in water at room temperature
作者:Elena Tasca、Giorgio La Sorella、Laura Sperni、Giorgio Strukul、Alessandro Scarso
DOI:10.1039/c4gc02248c
日期:——
Micellar media in water provide a simple and efficient environment favoring the multi-component synthesis of 1,2,3-triazoles from organic bromides, sodium azide and terminal alkynes in the presence of [Cu(IMes)Cl] 1 catalyst at room temperature within a few hours.