METHOD OF REDUCTION OF (-HALOGENKETONES TO SECONDARY (-HALOGENSPIRITS Russian patent published in 2008 - IPC C07C29/145 C07C31/36 C07D301/02 C07D303/04 C07D303/08 

FIELD: chemistry.

SUBSTANCE: method involves a stage of interaction of one or more α-halogenketones with general formula I , where each of "X" independently represents a halogen atom, except fluorine, a hydrogen atom and "Z" represents a halogen atom, except fluorine; with molecular hydrogen in the presence of heterogeneous catalyst, containing a transition metal, where the catalyst is a metallic salt, which is saturated with the catalyst carrier, where the metal consist of iridium, ruthenium or their mixture. The metal catalyses hydrogenation of all carbonyl groups of α-halogenketons to alcohol groups, at temperature from 1° to 200°C and pressure of at least 14 abs. pound/square inch with formation of one or more α-halogenspirits with general formula II . The invention also relates to the method of obtaining epoxides (alternatives), to the method of obtaining epi-halogenhydrine (alternatives) and to the method of obtaining propylene oxide (alternatives).

EFFECT: improved activity of the catalyst.

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