反应详情

Prepared from 4-fluoro-3-isopropyl-6-nitro-1,3-benzoxazol-2(3H)-one (Step 1, 0.87 g, 3.64 mmol), ammonium chloride (1.95 g, 36.4 mmol) and iron powder (0.81 g, 14.6 mmol) in ethanol (30 ml) and water (15 ml) according to the method of EXAMPLE 86, Step 7 (0.77 g, 99%).