A process for preparing a compound (III) is provided, in which the compound (III) is prepared from a methoxycarbonyl derivative through a methoxyamide derivative. These two reaction steps are continuously carried out and substantially the same as one step. The compound (III) is useful as a synthetic intermediate for preparing a dual tyrosine kinase inhibitor and can be conveniently prepared in high yield according to the present invention.
提供了一种制备化合物(III)的方法,其中化合物(III)是通过甲氧羰基衍
生物经甲氧酰胺衍
生物制备的。这两个反应步骤是连续进行的,并且基本上相当于一步。该化合物(III)可用作制备双重
酪氨酸激酶
抑制剂的合成中间体,并且可以根据本发明方便地高产率地制备。