Photochemical process for the production of halogeno-alkanes
AssigneeSociete Nationale Elf Aquitaine
InventorsMichel Gellato, Jean-Louis Seris, Jeannine Suberloco
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Abstract
In a photochemical process, halogeno-alkanes are produced by irradiation of an ethylenic compound and of an excess amount of bromhydric acid, the reaction being advantageously carried out in the presence of a certain amount of the halogeno-alkane compound to be obtained. The ethylenic compound concentration is of 1 mole to 1.5 mole per liter in the reaction medium; the reaction is continued until a 90% conversion is reached. 3-bromo-1-chloro-propane is obtained with a good yield by irradiation of allyl chloride and HBr. Apparatus is provided for carrying out the process batchwise and in continuous operation.
Claims13
A photochemical process for producing halogeno-alkanes obtained by reacting ethylenic compounds with bromhydric acid, wherein polymers are prevented from forming and from depositing on the lamp-holder, by performing the reaction in the halogeno-alkane to be obtained, and in the presence of an excess amount of bromhydric acid sufficient to saturate the reaction medium.
Dependencies are inferred from the claim text.