Involved in Dihydroxylation of Arenes

The corresponding dioxygenase from Pseudomonas aeruginosa 142 is, however, a three-component enzyme (Romanov and Hausinger 1994). 

Generally the di-dihydrodiols are dehydrogenated to the corresponding catechol. In some, dehydrogenation is not reqnired and elimination of CO2H, NHj, Hal, NOj , and SOj or exceptionally OH prodnces catechols directly. These are assigned to group II. 

In these reactions, dehydrogenation is not reqnired and formation of the catechol is attained with 

Amine groups in the conversion of aniline into catechol (Bachofer and Lingens 1975  

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