METHOD FOR PRODUCTION OF 2-CHLOR-4-NITROPHENOL Russian patent published in 2023 - IPC C07C201/12 

Abstract RU 2792890 C2

FIELD: organic chemistry.

SUBSTANCE: invention relates to the field of organic chemistry, specifically to a method for the production of 2-chlor-4-nitrophenol used for the treatment of fungal skin lesions. According to the proposed method, 2-chlor-4-nitrophenol is obtained by chlorination of 4-nitrophenol, while t-BuOCl is used as a chlorinating agent, the reaction is carried out in the presence of catalysts selected from FeBr2, Fe(C5H5)2, FeCl2⋅4H2O, FeCl3⋅6H2O, at 20°C for 0.5-5 h, at a molar ratio of [catalyst] : [4-nitrophenol] : [t-BuOCl] = 0.1-1:100:100-120.

EFFECT: proposed method allows for simplification of a technology and reduction in cost price of the production of 2-chlor-4-nitrophenol, as well as reduction in amount of waste.

1 cl, 1 tbl, 10 ex

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RU 2 792 890 C2

Authors

Bajguzina Alfiya Ruslanovna

Khusnutdinov Ravil Ismagilovich

Asadullin Ramis Rafailevich

Ramazanov Ilfir Rifovich

Dates

2023-03-28Published

2021-07-29Filed