METHOD FOR PURIFYING 2-METHYLIMIDAZOLE Russian patent published in 2018 - IPC C07D233/58 

Abstract RU 2665713 C2

FIELD: organic chemistry.

SUBSTANCE: invention relates to the field of organic chemistry, namely to a method for purifying 2-methylimidazole, which consists in recrystallization in three stages by preparing a supersaturated solution, cooling it to 3 °C, filtering first portion of precipitated crystals, partial evaporation of water, cooling up to 3 °C, filtering the second portion of the precipitated crystals and removing water with filtration of the third portion of the precipitated crystals.

EFFECT: technical result: increased purity of the final product, technological simplification of the process.

1 cl, 1 ex

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RU 2 665 713 C2

Authors

Malkov Viktor Sergeevich

Kotelnikov Oleg Alekseevich

Dates

2018-09-04Published

2016-12-29Filed