(3,5-Dichloro-4-methoxy-phenyl)-(2,3-dihydro-pyrido[3,4-b][1,4]oxazin-1-yl)-methanone 、
氯化锂 、
哌嗪 在
甲醇 作用下,
以to obtain the target compound 41 as pale-brown solid (40 mg, 47%)的产率得到(3,5-dichloro-4-hydroxy-phenyl)-(2,3-dihydro-pyrido[3,4-b][1,4]oxazin-1-yl)-methanone