申请人:JOHN WYETH & BROTHER LIMITED
公开号:EP0054384A1
公开(公告)日:1982-06-23
Fused carbocyclic ring derivatives of pyridine which contain a nitrile or thioamide group on the carbocyclic ring e.g. 8-cyano or thiocarboxamido-5,6,7,8-tetrahydro- quinolines are prepared by a process in which a sodium, potassium, lithium or magnesium halide derivative of the pyridine compound is treated with a compound RaRbNCN wherein Ra and Rb are the same or different and represent alkyl, cycloalkyl, or aralkyl, or Ra and Rb are joined to form a heterocyclic ring with the nitrogen, and the product is treated with a proton source to obtain the nitrile which is optionally treated with a sulphurising agent to form the thioamide. The nitriles or thioamides may be isolated as their acid addition salts.
在碳环上含有腈基或硫酰胺基团的吡啶碳环衍生物,例如8-氰基或硫代羧酰胺基-5,6,7,8-四氢-喹啉的制备方法是:将吡啶化合物的钠、钾、锂或镁卤化物衍生物与化合物 RaRbNCN 一起处理,其中 Ra 和 Rb 可以相同或不同,代表烷基、环烷基或芳烷基,或 Ra 和 Rb 代表环烷基或芳烷基、环烷基或芳烷基,或者 Ra 和 Rb 与氮连接形成杂环,然后用质子源处理产物,得到腈,再用硫化剂处理形成硫代酰胺。腈或硫代酰胺可以作为它们的酸加成盐分离出来。