The invention relates to a preparation method of
pazopanib and an intermediate thereof, in particular to a preparation method of a structure as shown in a formula IV and a method for further preparing the
pazopanib. 4-chloro-2-nitropyrimidine is used as an initial
raw material and is sequentially subjected to substitution, reduction and
alkylation reaction to obtain the
pazopanib. The preparation method provided by the invention is a brand new technical
route and is not reported in any literature and patent. According to the method, the yield of the product can be greatly improved, and the method is suitable for industrial production.