Synthesis and Reactions of Substituted 4,8-Dioxo-4H,8H-benzodiisoxazolium Salts

Article abstract of DOI:10.1007/BF00809658

N-alkylated 2,5-diamino-p-benzoquinone-3,6-dicarboacidamides 6 and 7 are synthezised by alkylation and following reduction of 3,7-diamino-substituted benzodiisoxazolidiones 1c-f.Quinoneheterocycles 2a-b react under the presence of amines in a similar way to dioxobenzodiisoxazolium-salts 3 and 4 via intermediate formation of vinylogous, intramolecularly stabilized carbonylnitrenes to mono-, bi-, and tricycled quinone-derivatives 8, 9, 11 and 13-15.