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|Section2= |Section3= |Section7= |Section8= }} Diazomethane is the chemical compound CH2N2, discovered by German chemist Hans von Pechmann in 1894. It is the simplest diazo compound. In the pure form at room temperature, it is an extremely sensitive explosive yellow gas; thus, it is almost universally used as a solution in diethyl ether. The compound is a popular methylating agent in the laboratory, but it is too hazardous to be employed on an industrial scale without special precautions. ==Use== For safety and convenience diazomethane is always prepared as needed as a solution in ether and used as such. It converts carboxylic acids into their methyl esters or into their homologues (see Arndt-Eistert synthesis). In the Büchner–Curtius–Schlotterbeck reaction diazomethane reacts with an aldehyde to form ketones. When diazomethane is reacted with alcohols or phenols in presence of boron trifluoride (BF3), methyl ethers are obtained. Diazomethane is also frequently used as a carbene source. It readily takes part in 1,3-dipolar cycloadditions. 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「diazomethane」の詳細全文を読む スポンサード リンク
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