Gold-Catalyzed Cadiot-Chodkiewicz-type Cross-Coupling of Terminal Alkynes with Alkynyl Hypervalent Iodine Reagents: Highly Selective Synthesis of Unsymmetrical 1,3-Diynes
作者:Xiangdong Li、Xin Xie、Ning Sun、Yuanhong Liu
DOI:10.1002/anie.201702833
日期:2017.6.6
A new and efficient method for the synthesis of unsymmetrical 1,3‐butadiynes by gold‐catalyzed C(sp)–C(sp) cross‐coupling of terminal alkynes with alkynyl hypervalent iodine(III) reagents has been developed. The reaction features high selectivity and efficiency, mild reaction conditions, wide substrate scope, and functional‐group compatibility, and is a highly attractive complement to existing methods
Copper immobilized on nano-silica triazine dendrimer (Cu(<scp>ii</scp>)-TD@nSiO<sub>2</sub>) catalyzed synthesis of symmetrical and unsymmetrical 1,3-diynes under aerobic conditions at ambient temperature
Highly efficient synthesis of symmetrical and unsymmetrical 1,3-diynes catalyzed by Cu(ii)-TD@nSiO2/DBU is reported.
报道了Cu(II)-TD@nSiO2/DBU催化的对称和非对称1,3-二炔的高效合成。
Palladium-Catalyzed Cross-Coupling Reactions of 1,2-Diiodoalkenes with Terminal Alkynes: Selective Synthesis of Unsymmetrical Buta-1,3-diynes and 2-Ethynylbenzofurans
for the preparation of unsymmetricalbuta-1,3-diynes and 2-ethynylbenzofurans. In the presence of palladium(II)acetate and copper(I) iodide, unsymmetrical buta-1,3-diynes wereselectively obtained in moderate to good yields. Moreover, 2-ethynylbenzofuranswere obtained in one pot from the reaction of 2-ethynylphenol with( E)-1,2-diiodoalkenes, palladium(II)acetate, and copper(I) iodide by simple heating
Nucleophilic conjugate 1,3-addition of phosphines to oligoynoates
作者:Jie-Cheng Deng、Chih-Wei Kuo、Shih-Ching Chuang
DOI:10.1039/c4cc02870h
日期:——
Herein we have elucidated unusual and unique nucleophilic conjugate 1,3-addition reactions of surveyed oligoynoates toward phosphines through spectroscopic and single crystal X-ray diffraction analyses of three-component reaction products of oligoynoates, phosphines and aldehydes.
One‐pot synthesis of unsymmetrical 1,3‐butadiyne derivatives
作者:Zhicai Zhao
DOI:10.1002/bkcs.12762
日期:2023.10
An efficient co-operative Ni/Cu system for Cadiot–Chodkiewicz coupling utilizes CaC2 as the alkyne source. The advantage of this cross-coupling reaction lies in the low cost of using cheap and readily available raw materials and the simplicity of operation. A series of functionalized diaryl, aryl-alkyl, and aryl-heteroaryl 1,3-diynes are obtained in moderate to high yields.