METHOD OF OBTAINING BROMCUMPHORUS Russian patent published in 2017 - IPC C07C49/477 C07C17/10 

FIELD: chemistry.

SUBSTANCE: implement bromination of camphor. The reaction mass of camphor and ethyl alcohol is heated to 70±10°C, bromine is added, heated to 95±5°C, kept, washed with hot water to a pH of washing water of at least 5.5-6.5. Add to isopropyl alcohol, heated to a temperature of 70±15°C and post excerpts by adding 43-50% solution of caustic soda pH adjusted to 7.0-8.5 mixture, mixture is cooled to a temperature of 0±7°C. And post excerpts filtered, washed with distilled water to a pH of 5.7-6.5. The obtained technical bromocamphor is dissolved in isopropyl alcohol with activated carbon at a temperature of 75±5°C and then recrystallized. The resulting pharmacopeia bromocampor is filtered, washed with purified water and dried to a moisture content of not more than 1%.

EFFECT: increasing the yield of the target product and decreasing the consumption coefficients.

2 cl