2,2-dimethyl-3,4-dihydro-2H-pyrido[4,3-b][1,4]oxazine 、
3,5-dibromo-4-methoxybenzoyl chloride 以to obtain the target compound, (3,5-dibromo-4-methoxy-phenyl)-(2,2-dimethyl-2,3-dihydro-pyrido[4,3-b][1,4]oxazin-4-yl)-methanone (73 mg, 44%)的产率得到(3,5-dibromo-4-methoxy-phenyl)-(2,2-dimethyl-2,3-dihydro-pyrido[4,3-b][1,4]oxazin-4-yl)-methanone