英语词汇“diazomethane”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	diazomethane
释义	diazomethane, n. Chem.\|daɪˌæzəʊˈmiːθeɪn, daɪˌeɪzəʊ-\| [ad. G. Diazomethan (H. von Pechmann 1894, in Ber. d. Deut. Chem. Ges. XXVII. 1888), f. diazo- + methane n.] An aliphatic diazo compound, CH₂N₂ , a poisonous yellow gas used as a methylating agent. 1894Jrnl. Chem. Soc. LXVI. i. 438 When nitrosomethylbenzamide, nitrosomethylurethane, and similar nitroso-derivatives of methylamine are treated with alkalis, a yellow gas is formed... This gas is diazomethane.1935Ibid. i. 286 Further experience of the method of preparing diazomethane previously described..revealed certain defects.1968I. L. Finar Org. Chem. (ed. 4) II. vii. 242 More recent methods of methylation use sodium and methyl iodide in liquid ammonia, or diazomethane in the presence of moisture.1980M. Orchin et al. Vocab. Org. Chem. iv. 91 Alkanes in which two hydrogen atoms attached to the same carbon are replaced by the diazo group, {b2}N₂ . Examples. Diazomethane and diphenyldiazomethane.
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