Journal of the Chemical Society (Resumed)

259. A colour reaction of maleic anhydride, p-benzoquinone, their partially substituted derivatives, and citric acid. Some zwitterions

A Schönberg, AFA Ismail

Index: Schoenberg; Ismail Journal of the Chemical Society, 1940 , p. 1374,1377

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Citation Number: 5

Abstract

Maleic anhydride and p-benzoquinone give sensitive colour reactions with triphenylphosphine (see Natuve, 1939, 144, 910). Similar colour reactions have been observed with many of their derivatives which contain one unsubstituted hydrogen atom in