Copper-catalyzed decarboxylative cross-coupling of propiolic acids and terminal alkynes
作者:Miao Yu、Delin Pan、Wei Jia、Wei Chen、Ning Jiao
DOI:10.1016/j.tetlet.2009.12.138
日期:2010.3
A copper-catalyzed decarboxylative cross-coupling reaction of propiolic acids with terminal alkynes is developed leading to unsymmetric 1,3-conjugated diynes under mild conditions. This method provides a novel decarboxylative cross-coupling for sp-sp bond formation. Compared to organic halides, only carbon dioxide is produced as by-products in this approach.
Synthesis of Unsymmetrical 1,3-Diynes via Pd/Cu-Catalyzed Cross-Coupling of Terminal Alkynes at Room Temperature
作者:Yashuai Liu、Ping Liu、Ningning Gu、Jianwei Xie、Yan Liu、Bin Dai
DOI:10.1002/cjoc.201600197
日期:2016.9
A facile and practical synthetic route of unsymmetrical 1,3‐diynes via the PdCl/CuI catalyzed oxidative coupling of two different terminal alkynes has been developed by using 3‐(diphenylphosphino)propanoic acid as a ligand in the presence of oxygen. This system is suitable for not only aromatic alkynes but also heteroaromatic and aliphatic alkynes which were transformed into the corresponding unsymmetrical
of non‐toxic and magnetically separable nano‐CuFe2O4 as an efficient catalyst for oxidative homo‐ and cross‐coupling reaction of terminalalkynes is described. A wide range of symmetrical and unsymmetrical 1,3‐diynes have been synthesized in moderate to good yields under ambient atmosphere. The nano CuFe2O4 can be recovered with a magnet and reused at least five consecutive cycles with no appreciable
描述了无毒且可磁分离的纳米CuFe 2 O 4作为末端炔烃氧化均相和交叉偶联反应的有效催化剂的应用。在环境大气下,合成了多种对称和不对称的1,3-二炔,收率中等至良好。纳米CuFe 2 O 4可以用磁铁回收,并至少连续五个循环重复使用,而其催化活性没有明显损失。
Enaminone ligand-assisted homo- and cross-coupling of terminal alkynes under mild conditions
作者:Yunyun Liu、Chunping Wang、Xiaobo Wang、Jie-Ping Wan
DOI:10.1016/j.tetlet.2013.05.063
日期:2013.7
Copper-catalyzed oxidative coupling reactions of terminal alkynes have been performed at room temperature by using enaminone as effective ligand. Both symmetrical and unsymmetrical 1,3-diynes bearing various functional groups have been synthesized in moderate to excellent yields via homo- and cross-coupling reactions. (C) 2013 Elsevier Ltd. All rights reserved.