化学
电合成
炔丙基
电解质
电化学
催化作用
镍
阴极
阳极
无机化学
支撑电解质
铜
有机化学
电极
物理化学
作者
Gaoqing Yuan,Guojun Zhu,Xiaoying Chang,Chaorong Qi,Huanfeng Jiang
出处
期刊:Tetrahedron
[Elsevier]
日期:2010-12-01
卷期号:66 (52): 9981-9985
被引量:30
标识
DOI:10.1016/j.tet.2010.10.039
摘要
A convenient and efficient electrochemical method has been developed for the synthesis of the α-alkylidene cyclic carbonates from carbon dioxide (CO2) and propargyl alcohols at room temperature. The electrosynthesis was successfully carried out with a copper anode and a nickel cathode in an undivided cell containing n-Bu4NBr–MeCN electrolyte with a constant current under 3 MPa pressure of CO2, and the α-alkylidene cyclic carbonates were obtained in good to excellent isolated yields in the secondary and tertiary terminal propargylic alcohols cases. The experimental results show that the electrogenerated Cu+ ions and strong bases in situ could efficiently catalyze or promote the coupling reaction under the cooperation of electrolytic medium MeCN and supporting electrolyte n-Bu4NBr. The plausible mechanism of the coupling reaction was also discussed briefly.
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