5-(4-methoxy-phenyl)-6-methyl-8-oxo-5,6-dihydro-8H-imidazo[5,1-c][1,4]oxazine-1-carboxylic acid methyl ester 在
溴 、
溶剂黄146 作用下,
生成 5-(3-bromo-4-methoxy-phenyl)-6-methyl-8-oxo-5,6-dihydro-8
H-imidazo[5,1-
c][1,4]oxazine-1-carboxylic acid methyl ester