Arylalkylamines (as a sulfate salt) e.g. tyramine sulfate, are prepared by reacting substituted or unsubstituted arylalkylketones with a lower alkylnitrite in the presence of hydrogen chloride in a dipolar aprotic solvent, then combining the reaction mixture with water and extracting it with a lower alkyl ester or alcohol to recover an aryl-α-oximinoalkylketone extract. The extract, combined with a supported hydrogenation catalyst (e.g. palladium on carbon) in a nonaqueous reaction medium of a major proportion of a mildly protic carboxylic acid (e.g. acetic acid) and a minor proportion of a srong inorganic acid (e.g. sulfuric acid), which is effective in the presence of the catalyst for secondary alcohol dehydration and active as an absorbant for water produced in the dehydration reaction, is hydrogenated to produce the arylalkylamine sulfate sale.
芳烷基胺(作为
硫酸盐),例如
硫酸酪胺,是通过在
氯化氢存在下,在二极性非 普罗溶剂中,使取代或未取代的芳烷基酮与低级
亚硝酸烷基酯反应,然后将反应混 合物与
水混合,并用低级烷基酯或醇萃取,以回收芳基-α-氧亚
氨基烷基酮萃取物。该萃取物与支撑氢化催化剂(如碳上
钯)在非
水反应介质中结合,该反应介质主要成分为轻度质子
羧酸(如
乙酸),次要成分为强
无机酸(如
硫酸),在催化剂存在下,强
无机酸对二次醇脱
水有效,对脱
水反应中产生的
水有吸附作用,氢化反应生成出售的芳基烷基胺
硫酸盐。