Process for the manufacture of alkylacetophenones
AssigneeSolvay & Cie
InventorPierre Malfroid
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Abstract
A process for the manufacture of alkylacetophenones wherein (1) benzene is acylated, (2) the alkylaryl ketone thus obtained is hydrogenated catalytically, and (3) the alkylbenzene thus obtained is acetylated, in only one solvent chosen from among chlorinated aliphatic hydrocarbons containing 1 to 3 carbon atoms and 2 or 3 chlorine atoms per molecule, and their mixtures.
Claims12
In a process for the manufacture of alkylacetophenones wherein (1) benzene is acylated by means of an acylating agent selected from the group consisting of anhydrides and chlorides of aliphatic organic acids in order to obtain an alkylphenylketone, (2) the alkylphenylketone thus obtained is hydrogenated catalytically in order to obtain the corresponding alkylbenzene and (3) the alkylbenzene thus obtained is acetylated by means of an acetylating agent selected from the group consisting of acetic anhydride and and acetyl chloride in order to obtain the corresponding alkylacetophenone, the improvement wherein the three reactions involving (1) alkylation, (2) hydrogenation and (3) acetylation are carried out in only one solvent selected from the group consisting of chlorinated aliphatic hydrocarbons containing 1 to 3 carbon atoms and 2 or 3 chlorine atoms per molecule, and their mixtures.
Dependencies are inferred from the claim text.