|
Benzyl potassium is an organopotassium compound with the formula C6H5CH2K. It is an orange solid that is so extremely basic that it is compatible only with hydrocarbon solvents. ==Synthesis== One early synthesis proceeds by two-step transmetallation reaction ''via'' ''p''-tolylpotassium:〔Gilman, Henry; Pacevitz, Henry A.; Baine, Ogden "Benzylalkali Compounds" Journal of the American Chemical Society 1940, vol. 62, pp. 1514-20. 〕 :(CH3C6H4)2Hg + 2 K → 2 CH3C6H4K + Hg :CH3C6H4K → KCH2C6H5 A modern synthesis involves the reaction of butyllithium, potassium tert-butoxide, and toluene.〔Philip J. Bailey, Robert A. Coxall, Caroline M. Dick, Sylvie Fabre, Louise C. Henderson, Christian Herber, Stephen T. Liddle, Daniel Loroño-Gonzālez, Andrew Parkin, Simon Parsons "The First Structural Characterisation of a Group 2 Metal Alkylperoxide Complex: Comments on the Cleavage of Dioxygen by Magnesium Alkyl Complexes" Chemistry, European Journal 2003, vol. 9, pp. 4820-4828. 〕 Although potassium hydride can also be used as a strong base for preparing potassium salts, benzyl potassium has the advantage of being molecular and hence more fast-acting. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Benzyl potassium」の詳細全文を読む スポンサード リンク
|