有機合成化学協会誌
Online ISSN : 1883-6526
Print ISSN : 0037-9980
ISSN-L : 0037-9980
Cu
Preparation of Copper Compounds Utilized for Organic Syntheses
伊藤 嘉彦
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1979 年 37 巻 12 号 p. 991-995

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Lithium dialkylcopper, cuprate, is prepared in situ by treating a suspension of cuprous iodide in ether or THF with 2 equivalent of alkyllithium. Anhydrous cupric chloride is prepared by heating commercially available CuCl2·2H2O at 120°C for several hours. Cuprous oxide is prepared by heating commercially available Cu2O in vacuo at 6070°C for several hours. Copper (I) carbonyl cation is generated by treating cuprous oxide in sulfuric acid with 1 atm. of carbon monoxide. Active copper powder is prepared by reducing cupric sulfate in water with zinc powder under nitrogen gas. Copper (I) tert-butoxide is prepared by reacting anhydrous cuprous chloride with lithium tert-butoxide in THF. Copper (I) tert-butoxide is thermally stable under nitrogen and purified by sublimation at 170°C/1 mmHg. Copper (I) triflate · (benzene) 1/2 complex is prepared by heating cuprous oxide with trifluoromethanesulfonic acid anhydride in benzene at reflux. Some synthetic reactions using the copper compounds thus prepared are also described.

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© The Society of Syhthetic Organic Chemistry, Japan
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