Preparation of mononitropyrogallols and their methyl ethers, acetates, and benzenesulphonates

Abstract

Mononitration of pyrogallol 1,3- and 1,2-dibenzenesulphonate, gave 5-nitropyrogallol 1,3-dibenzenesulphonate 4-nitropyrogallol 1,2-dibenzenesulphonate and 4-nitropyrogallol 2,3-dibenzonesulphonate; these were separated and characterised. Mononitration of pyrogallol triacetate gave a mononitro-compound which was separated and characterised as the 4-nitropyrogallol 1,2-diacetate. From the above nitro-derivatives of 5-nitropyrogallol and 4-nitropyrogallol, a number of mono-, di-, and tri-methyl ethers, acetates, and benzenesulphonates were prepared.