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Ethyl 4-benzamido-5-phenyl-4H-1,2,4-triazole-3-carboxyl-ate monohydrate

Li Wang1, Xue-Ying Liu, Ping-An Wang

  • 1Department of Chemistry, School of Pharmacy, Fourth Military Medical University, Changle West Road 17, 710032 Xi-An, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|July 15, 2011
PubMed

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Diazonium Group Substitution: –OH and –H01:19

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Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.