Pyridine → HCID 70872018, compound

Participants

Reaction Steps

The compound (264 mg, 0.83 mmol) obtained in Step 4 above was dissolved in dichloromethane (8 ml), acetic anhydride (0.50 ml, 5.30 mmol) was added and the resulting mixture was stirred at room temperature for 1 hour. Then pyridine (0.10 ml, 1.24 mmol) was added and the resulting mixture was further stirred for 1 hour. Saturated brine (20 ml) was added to the reaction mixture and the resulting mixture was stirred for 1 hour, followed by extraction with dichloromethane. The organic layer was washed with saturated sodium bicarbonate solution and brine in that order and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure and the residue obtained was purified by silica gel column chromatography [chloroform:methanol=40:1 (v/v)] to give 244 mg (82%) of the title compound as a colorless amorphous solid.

Provenance & Evidence