反应详情

5-(4-Bromo-phenyl)-3-methyl-isoxazole-4-carbonyl chloride (from the previous step) was dissolved in ACN (30 mL) then trimethylsilyl-diazomethane (2M in Et2O, 16.38 mL, 32.76 mmol) was slowly added and the reaction stirred at room temperature for 2 hours. Hydrobromic acid (30% aq., 7 mL) was carefully added and the reaction stirred for an additional 1 hour. The mixture was submitted to standard aqueous workup then purified on silica gel (0-20% EtOAc in hexanes) to afford the title compound.

1. stirringthe reaction stirred for an additional 1 hour
2. customthen purified on silica gel (0-20% EtOAc in hexanes)