METHOD OF SELECTIVE HYDROBROMATION OF OLEFINIC NON-SATURATED COMPOUNDS

摘要

Selective hydrobromination method of olefinically unsaturated compounds in the presence of activators under the -20 to +50 C is realised by hydrogen bromide or mixture of hydrogen chloride with hydrogen bromide, prepared by at least one technologically available methods, whilst at least one olefinically unsaturated compound is introduced into the contact with the gas containing oxygen as an activator and hydrogen bromide or at least one olefinically unsaturated compound with the gas containing oxygen (particularly molecular oxygen) and the mixture of hydrogen chloride with dry hydrogen bromide and eventually another gas. Whilst the amount of oxygen (O2, O3, super-oxide) or of the mixture of oxygen with organic peroxide as an activator reaches 0.005 to 20 wt. % / olefinically unsaturated compounds. At least one part of the activator can affect the reactants before the hydrobromination step. The hydrobromination does not run without the activator, with the activator just hydrobromination and substantially "in anti-Markovnikov form".