申请人:HOECHST CELANESE CORPORATION
公开号:EP0491557A1
公开(公告)日:1992-06-24
Arylalkylamines (as the hydrochloride salt), e.g. tyramine hydrochloride, are prepared by hydrogenating substituted or unsubstituted aryl-α-oximinoalkyl ketones, e.g. p-hydroxyisonitroacetophenone, in either in an aqueous reaction medium comprising hydrochloric acid, essentially without the presence of a lower alkyl alcohol in said reaction medium, or in an aqueous reaction medium comprising water, hydrochloric acid, and a lower alkyl alcohol, wherein the alcohol comprises less than about 90% by volume of the reaction medium. A substituent on the aryl portion of the aryl-α-oximinoalkyl ketone must be on a position which activates the aromatic ring.
芳基烷基胺(盐酸盐),例如酪胺盐酸盐,是通过氢化取代或未取代的芳基-α-氧亚氨基烷基酮,例如对羟基异硝基苯乙酮,或者在包含盐酸的水性反应介质中,在所述反应介质中基本上不存在低级烷基醇,或者在包含水、盐酸和低级烷基醇的水性反应介质中,其中醇占反应介质的体积比低于约 90%。芳基-α-氧亚氨基烷基酮的芳基部分上的取代基必须位于激活芳环的位置上。