1268701-25-2Relevant articles and documents
Pyrolysis of 3-hydroxy-2-arylhydrazonoalkanoic acid derivatives
Al-Awadi, Nouria A.,Ibrahim, Yehia A.,John, Elizabeth,Parveen, Aneesha
experimental part, p. 1298 - 1307 (2011/04/15)
1,2-Diaza-1,3-butadienes have been obtained from readily available 3-hydroxy-2-arylhydrazonopropanoates under various reaction conditions including pyrolysis, dehydration under Mitsunobu conditions or with acetic anhydride or acetic acid. According to their method of synthesis these 1,2-diaza-1,3- butadienes underwent subsequent reactions to give interesting products, and in the presence of proper dienophiles gave the corresponding cycloaddition products. Also, a new approach to pyrazole-3-carboxylic acid derivatives was discovered during an attempt to dehydrate 3-hydroxy-2-arylhydrazonobutanoic esters.
