Mono- and Diazaquinones

Abstract

Publisher Summary This chapter describes monoazaquinone and diazaquinone compounds, and includes quinonoid structures containing one or two bridgehead nitrogen atoms. Quinones constitute an important class of naturally occurring compounds that are involved in many biochemical processes. Some of them, which are usually called heterocyclic quinones, contain a heterocyclic ring fused onto the quinonoid moiety. Some quinones also exhibit important synthetic and industrial applications. Specifically, in context to monoazabenzoquinones, two aza analogs of o- benzoquinone and one aza analog of p -benzoquinone are possible. And in the case of diazabenzoquinones, four diaza analogs of o -benzoquinone and three diaza analogs of p -benzoquinone are possible. The chapter also describes monoazanaphthoquinones and condensed diazaquinones along with their methods of synthesis, reactions, and spectroscopic properties. It examines bridgehead nitrogen atom-containing quinones that includes canthin-4, 5-dione alkaloids and their derivatives, and azaquinones containing one and two bridgehead nitrogen atoms.