反应详情

To a solution of t-butyl 2-(2-bromo-4-((methylamino)methyl)phenoxy)acetate (2) (68.8 g, 0.21 mol, 1 eq) in DCM (500 mL) was added triethylamine (42 g, 0.42 mol, 2 eq) and 3-chloro-4-fluorobenzene-1-sulfonyl chloride (47.8 g, 0.21 mol. 1 eq, Aldrich, Milwaukee, Wis., USA). After the mixture was stirred for 2 h at room temperature, DCM was evaporate. Crude product was recrystallized from ethanol to yield tert-butyl 2-(2-bromo-4-((3-chloro-4-fluoro-N-methylphenylsulfonamido)methyl)phenoxy)acetate (10) (64 g, 59%).

1. customDCM was evaporate
2. customCrude product was recrystallized from ethanol