Metal- and Base-Free Three-Component Reaction of Ynones, Sodium Azide, and Alkyl Halides: Highly Regioselective Synthesis of 2,4,5-Trisubstituted 1,2,3-NH-Triazoles
A base- and metal-free three-component reaction of ynones, sodium azide, and alkyl halides is developed for the regioselective synthesis of 2,4,5-trisubstituted-1,2,3-triazoles. The method is general, convenient, environmentally benign, atom-economical, and high-yielding.
Synthesis of 5-organostibano-1 H -1,2,3-triazoles by Cu-catalyzed azide-alkyne cycloaddition and their application in the acyl-induced deantimonation for the preparation of fully substituted 5-acyl-1,2,3-triazoles
azide-alkyne cycloaddition by the reaction of various ethynylstibanes with benzylazide in the presence of CuBr (5 mol%) under aerobic conditions led to the formation of trisubstituted 5-organostibano-1H-1,2,3-triazoles. Further, the acyl-induced deantimonation of 5-stibanotriazoles with acylchlorides in the presence of N,N-dimethyl-4-aminopyridine and triethylamine afforded the corresponding trisubstituted
在有氧条件下,在CuBr(5 mol%)存在下,各种乙炔基苯乙烯与苄基叠氮化物反应,Cu催化的叠氮化物-炔烃环加成反应导致形成三取代的5-organostibano-1 H -1,2,3-三唑。此外,在N,N-二甲基-4-氨基吡啶和三乙胺存在下,酰基磺酰基5-stibanotriazoles的酰基诱导的去锑化反应以中等至良好的产率提供了相应的三取代的5-酰基三唑。
Regiospecific Synthesis of 1,4,5-Trisubstituted-1,2,3-triazole via One-Pot Reaction Promoted by Copper(I) Salt
作者:Yong-Ming Wu、Juan Deng、Ya Li、Qing-Yun Chen
DOI:10.1055/s-2005-861860
日期:——
A method for the regiospecific synthesis of 1,4,5-trisubstituted-1,2,3-triazole catalyzed by copper(I) iodide was developed. This is the first example of a regiospecific synthesis of 5-iodo-1,4-disubstituted-1,2,3-triazole, which can be further elaborated to a range of 1,4,5-trisubstituted-1,2,3-triazole derivatives.
Preparation of 1,4,5-Trisubstituted 5-Acyl-1,2,3-triazoles by Selective Acylation between Copper(I)-Carbon(<i>sp</i>) and Copper(I)-Carbon(<i>sp</i><sup>2</sup>) Bonds with Acyl Chlorides
作者:Bo Wang、Nan Liu、Changwei Shao、Qun Zhang、Xinyan Wang、Yuefei Hu
DOI:10.1002/adsc.201300307
日期:2013.9.16
one‐pot, three‐component method for preparation of 1,4,5‐trisubstituted 5‐acyl‐1,2,3‐triazoles has been developed based on a highly selective acylation of the copper(I)‐carbon(sp2) bond with acyl chlorides in the presence of the copper(I)‐carbon(sp) bond. The procedure is characterized by high efficiency and simple conditions.