反应详情

Trifluoroacetic acid (42 μL, 0.56 mmol) was added to a solution of tert-butyl 2,5-dichloro-4-(5-chloro-6-cyclopropylpyridin-3-yloxy)benzoate (Preparation 219, 116 mg, 0.28 mmol) in dichloromethane (3 mL). The reaction mixture was stirred at room temperature for 4 hours then concentrated in vacuo. The residue was dissolved in methanol (10 mL) then concentrated in vacuo to afford the title compound as colourless solid (100 mg, 100%).

1. concentrationthen concentrated in vacuo
2. dissolutionThe residue was dissolved in methanol (10 mL)
3. concentrationthen concentrated in vacuo