反应详情

Ethyl 2-[2-fluoro-4-(6-bromoquinoxalin-2-yloxy)phenoxy]propionate (10) was prepared from 6-bromo-2-chloro quinoxaline and ethyl 2-(2-fluoro-4-hydroxyphenoxy)propionate following essentially the same procedure as that described in Example 1 part (b). The title compound was obtained as colourless crystals mp 107°-108.6° C. and the assigned structure was characterised by nuclear magnetic resonance spectroscopy.