反应详情

A solution of (trimethylsilyl)diazomethane (4.0 mL of a 2.0 M solution in Et2O, 8.0 mmol) was added slowly to a solution of 6-hydroxy-1-naphthoic acid (commercially available from TCI, 1.50 g, 8.0 mmol) in THF (40 mL) at 0° C. After 1.5 h at 0° C., the reaction mixture was concentrated in vacuo and absorbed onto silica. The resulting residue was purified on 80 g silica gel (100% hexanes→100% EtOAc, gradient) to afford 910 mg (56%) of methyl 6-hydroxy-1-naphthoate.

1. concentrationthe reaction mixture was concentrated in vacuo
2. customabsorbed onto silica
3. customThe resulting residue was purified on 80 g silica gel (100% hexanes→100% EtOAc, gradient)