METHOD OF PRODUCING BROMOCYCLOHEXANE Russian patent published in 2017 - IPC C07C23/10 C07C17/16 

FIELD: chemistry.

SUBSTANCE: invention relates to organic chemistry, in particular, to a method of producing bromocyclohexane, widely used in chemical and pharmaceutical industry. Method comprises producing bromocyclohexane by reacting cyclohexanol with a bromating agent while heating. Brominating agent used is (45–48)% hydrobromic acid in presence of benzene with volume ratio of acid to benzene 1:0.75 and molar ratio acid to cyclohexanol 3.5:1, reaction mass is held for 4 hours with simultaneous distillation of benzene-water azeotrope at a temperature of 70–72 °C and returning benzene to reaction medium, and bromocyclohexane is separated from benzene fraction by distillation.

EFFECT: implementation of method ensures high output bromocyclohexane in bromation of cyclohexanol, reduces amount of wastes, as well as setting up recycling during synthesis of bromocyclohexane.

1 cl, 2 dwg, 1 ex