4-Phenyl-1,2,4-triazolin-3,5-dione: a po
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R.C. Cookson; S.S.H. Gilani; I.D.R. Stevens
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Article
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1962
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Elsevier Science
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French
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DIENOPHILIC reactivity rises in the series fumaric acid, maleic acid, maleic anhydride' and the well recognized dienophilic properties of azodicarboxylic ester2 place it last in this series ahead of maleic anhydride. However, it fails to react (or reacts by allylic addition) with some dienes with wh