Trifluoroacetic acid → HCID 86682831, compound

Participants

Reaction Steps

The compound (600 mg, 1.05 mmol) obtained in Step 1 was dissolved in dichloromethane (10 mL), and trifluoroacetic acid (1.62 mL, 21.0 mmol) was added thereto, followed by stirring at room temperature for 1 hour. After the reaction was complete, the reaction mixture was distilled under a reduced pressure to remove solvent, alkalify (pH 8) with sat. NaHCO3 aqueous solution, and extracted with chloroform 2 times. The organic layer was separated, washed with water and sat. brine, dried with anhydrous sodium sulfate, and then filtered and distilled under a reduced pressure. The residue was separated by column chromatography (chloroform:methanol=10:1 (volume ratio)) to obtain the title compound (yield: 316 mg, 72%).

Provenance & Evidence