Polystyrene resin-supported CuI-cryptand 22 complex: a highly efficient and reusable catalyst for three-component synthesis of 1,4-disubstituted 1,2,3-triazoles under aerobic conditions in water
作者:Barahman Movassagh、Nasrin Rezaei
DOI:10.1016/j.tet.2014.09.092
日期:2014.11
resin-supported copper(I) iodide-cryptand-22 complex (PS–C22–CuI) was synthesized and characterized by FT-IR, EDX, SEM, XPS, and TG-DTA analysis. This complex was found to be a highly active and robust heterogeneous catalyst for either three-component reaction of organic halides, sodium azide, and terminal alkynes, or the reaction of organic azides and alkynes to form 1,4-disubstituted1,2,3-triazoles in good
Immobilized copper(II) on nitrogen-rich polymer-entrapped Fe<sub>3</sub>O<sub>4</sub>nanoparticles: a highly loaded and magnetically recoverable catalyst for aqueous click chemistry
magnetic copper catalyst was prepared via anchoring of copper sulfate onto multi‐layered poly(2‐dimethylaminoethyl acrylamide)‐coated magnetic nanoparticles and was characterized using various techniques. The catalyst was found to be active, effective and selective for one‐pot three‐component reaction of alkyl halide, sodium azide and alkyne, known as copper‐catalyzed click synthesis of 1,2,3‐triazoles. As
Efficient One-Pot Synthesis of 1,2,3-Triazoles from Benzyl and Alkyl Halides
作者:Karol Kacprzak
DOI:10.1055/s-2005-864809
日期:——
An efficient one-pot method for the preparation of 1,2,3-triazoles by 1,3-dipolarcycloaddition of in situ generated azides and alkynes is presented. This facile method can be applied to benzyl or alkyl halides and pure products are isolated by simple filtration.
Abu-Orabi, Sultan T.; Atfah, Adnan; Jibril, Ibrahim, Gazzetta Chimica Italiana, 1992, vol. 122, # 1, p. 29 - 33
作者:Abu-Orabi, Sultan T.、Atfah, Adnan、Jibril, Ibrahim、Al-Sheikh Ali, Amer、Marii, Fakhri
DOI:——
日期:——
Catalytic Cyclization of 2,3-Dibromopropionates with Benzyl Azides to Afford 1-Benzyl-1,2,3-triazole-4-carboxylate: The Use of a Nontoxic Bismuth Catalyst
作者:Hong-bin Sun、Dong Li、Weiping Xie、Xinlin Deng
DOI:10.3987/com-15-13371
日期:——
We synthesized 1,2,3-triazoles via the cyclization of 2,3-dibromopropionates with benzyl azides. Bismuth chloride is an efficient catalyst, and the reaction is accelerated by weak bases such as sodium acetate. A variety of functional groups are compatible with this catalytic protocol, and it takes advantage of oxygen stable catalyst and substrates because the reactive dibromides are saturated.