6-(azetidin-3-yloxy)-4-(3-chloro-2,4-difluorophenylamino)quinazolin-7-ol 、 N-(3-chloro-2,5-difluorophenyl)-7-methoxy-6-((3S)-pyrrolidin-3-yloxy)quinazolin-4-amine 以to obtain the title compound (20 mg, 25%)的产率得到1-(3-(4-(3-chloro-2,4-difluorophenylamino)-7-hydroxyquinazolin-6-yloxy)azetidin-1-yl)prop-2-en-1-one