反应详情

In analogy to Example 56, step 4, 6-[2-(2-chloro-4-methoxy-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-4-ethyl-4H-benzo[1,4]oxazin-3-one (1.58 g) was reacted with 1M solution boron tribromide in dichloromethane, to give the title compound (1.57 g) as a light yellow solid. MS (m/e)=430.2 [M+H+].