diazomethane

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diazomethane

(daɪˌeɪzəʊˈmiːθeɪn)
n
(Elements & Compounds) a yellow odourless explosive gas, used as a methylating agent. Formula: CH2:N:N
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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(3) Additionally, parallel to the TMS derivatives, the methyl (Me) derivatives were obtained with diazomethane solution obtained in standard method from Diazald (N-nitroso-p-toluenesulfonamide) and potassium hydroxide in ethyl ether and subsequent distillation.
All of the phenolic compounds were methylated with fresh diazomethane, which was prepared from Diazald (Sigma Chemical Co.) (Black 1983).