6-[2-(4-bromophenyl)-2H-thiochromen-3-yl]-2H-1,4-benzoxazin-3(4H)-one 、 6-(2-bromopentanoyl)-2H-1,4-benzoxazin-3(4H)-one 、
(5-fluoro-2-mercaptobenzyl)(triphenyl)phosphonium bromide 以to give the title compound as crystals (0.14 g)的产率得到6-(6-fluoro-2-propyl-2H-thiochromen-3-yl)-2H-1,4-benzoxazin-3(4H)-one