In our study of the I,~,~, 6-tetrahydroxynaphtha1ene we proved that this compound is a quinone as well as a phenol, since it readily forms a semicarbazone, a phenylsemicarbazone and similar characteristic ketone derivatives. A somewhat analogous case is found in the hydrojuglons. When juglon is reduced with zinc dust to hydrojuglon, the product is almost_wholly a trihydroxyphenol and this can be converted by melting almost ...
[Land, Edward J.; Mukherjee, Tulsi; Swallow, A. John; Bruce, J. Malcolm Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1983 , vol. 79, p. 405 - 416]
