Aromatic compounds condensed, oxidative ring cleavage

Other non-halogenated aromatic compounds are transformed into either catechol or protocatechuate. Then, through a series of oxidative cleavage reactions, catechol and protocatechuate are processed to yield either acetylCoA and succinate, or pyruvate and acetaldehyde. In general, aromatics composed of one, two, or three condensed rings with several types of substitutions are also transformed into catechol. See Figures 9.7a and 9.7b. 

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