The present invention provides a process for preparing highly pure 4-amino-1-isobutyl-1H-imidazo[4,5-c]quinoline (imiquimod). The process preferably includes heating 4-chloro-1-isobutyl-1H-imidazo[4,5-c]quinoline of formula (II) with ammonia in a polar aprotic solvent at relatively moderate pressure to produce imiquimod, and optionally purifying the imiquimod. The process of the present invention can produce highly pure imiquimod in high yield.
本发明提供了一种制备高纯度4-
氨基-1-异丁基-
1H-咪唑[4,5-c]
喹啉(伊米曲莫德)的方法。该方法首选包括在极性非质子溶剂中以相对适中的压力加热式(II)式4-
氯-1-异丁基-
1H-咪唑[4,5-c]
喹啉和
氨反应以产生伊米曲莫德,并可选择性地纯化伊米曲莫德。本发明的方法可以高产地制备高纯度的伊米曲莫德。