反应详情

To a solution of 3-hydroxymethyl-4-(methylthio)nitrobenzene from step 1 (20 g, 0.10 mol) in CH2Cl2 (500 mL) and MeOH (100 mL), m-CPBA (74 g, 0.30 mol) was added portionwise at 0° C. and the mixture was stirred for 16 h at room temperature. The mixture was added aqueous Na2SO3 (20 g in 200 mL of water) at 0° C. Organic layer was separated and washed with saturated aqueous NaHCO3 (300 mL), dried over MgSO4, and concentrated in vacuo gave the title compound (15.6 g, 65%).

1. customOrganic layer was separated
2. washwashed with saturated aqueous NaHCO3 (300 mL)
3. dry with materialdried over MgSO4
4. concentrationconcentrated in vacuo