A process for the preparation of the compound of formula (I), a useful intermediate for the preparation of analgesic agents.
which comprises reacting a compound of formula (II) or an acid addition salt thereof
with propionic anhydride and then treating the resultant product with methanol.
一种制备式 (I) 化合物的工艺,它是制备镇痛剂的有用中间体。
其中包括使式(II)化合物或其酸加成盐反应
与
丙酸酐反应,然后用
甲醇处理生成物。