3-fluoro-5-(2,4-dimethoxybenzoyl)-6-methyl-5,6-dihydrophenanthridine 、
N-[1-(2',4'-difluoro-1,1'-biphenyl-2-yl)ethyl]-2,4-dimethoxybenzamide 、
lithium hexamethyldisilazane 在
4-[(3-fluoro-6-methylphenanthridin-5(6H)-yl)carbonyl]benzene-1,3-diol 、
甲基叔丁基醚 、
正己烷 作用下,
以
四氢呋喃 为溶剂,
以affording 1.2 g (99%) of the desired product的产率得到4-[(3-fluoro-6-methylphenanthridin-5(6H)-yl)carbonyl]benzene-1,3-diol