Oblon, Fisher, Spivak, McClelland & Maier
Process for producing pyrogallol and derivatives thereof
 A process for producing pyrogallol or 5-substituted pyrogallol having the formula: ##SPC1## Wherein R is selected from the group consisting of alkyl, cycloalkyl, aryl, and aralkyl, or a mixture thereof which comprises heating an aqueous solution of 4-substituted-2,6-diaminophenol or 4-substituted-2,6-diamino 1-alkoxybenzene having the formula: ##SPC2## Wherein R is as defined above and A is selected from the group consisting of hydrogen and alkyl, under acid conditions. 
Mitsubishi Chemical Industries, Limited
C C
C07C C07C
inventional inventional
Heitaro Akira Kenji Junichi
Obara Matukuma Yoshida Onodera