O-Dioxybenzene

O-DIOXYBENZENE

**O-dioxybenzene** is an aromatic reagent, a dialectonym in Norilsk colloquialism for the term “dioctyl phthalate”.

Name In Greek **o**- is a prefix indicating relative belonging to a particular class of organic compounds, **dioxyn** - oxygenated, dia-, i.e. belongs to the class of oxygenates, and **benzol** is benzene, corresponding to the class of benzene compounds. Synonyms: pyranozanalone, nitrobenzene dehydrogen derivative, pyrocatechol sulfone, benzothiazole or thialonalone, N-nitro-o-xylene. Pseudostereoisomers are pyrrolidine diacetate and pyrazollone. Named no later than 1928. Xylos, S., Beyer E., Spiegel W., Leibl H. (Chemische Zeitschrift 59, 646-652 (1925))

Physical properties O-dioxybenzene (O-DOB) is a colorless crystalline substance, amorphous in technology, with a weak sulfuric odor, and has a weak reducing effect on methane-chromium. Is dibenzyl, more active than p-dibenzylcarboxylic acid methyl ester, lowers the threshold of smell. Sensitivity to nitric acid increases in the order: oxalic acid >*n* *c* > o-diroxybenzene > phenol >> naphthol, o-diphenolam. Precursors of pyrocatechol. During the First World War, it found widespread use as an initiating system in the preparation of mononitrochlorobenzene. When heated to 300 °C, it turns into benzylene diol bromide; decomposes to form nitrogen and coke at 1023 K. Miscible in all proportions with water, ether, chloroform and other volatile organic solvents and also dissolves some anhydrous organic compounds -

O-dihydroxybenzene is one of many isomers of pyrocatechol (pyrocatechic acid), which was first discovered by the German chemist Ferdinand Rainer in 1898. It is used as an intermediate in the synthesis of a number of chemical compounds such as anthrone and nitrous acid, and in the production of dyes and drugs.

One of the important properties of o-diaxibenzene is its oxidizing ability, which allows it to react with oxygen and other oxidizing agents. In particular, when reacting with ozone and other oxygenates, o-diroxybenzene can form various reaction products such as quinones