反应详情

71.1 Using general method G, 1-(4-amino-3-fluoro-phenyl)-1H-pyrazin-2-one (prepared according to WO 2003045912) was activated with 4-nitrophenyl chloroformate to give [2-fluoro-4-(2-oxo-2H-pyrazin-1-yl)-phenyl]-carbamic acid 4-nitro-phenyl ester. Pale yellow solid.