Trifluoroacetic acid → HCID 53773095, compound

Participants

Reaction Steps

To a solution of 202 mg (0.50 mmol) of the compound (4) obtained in Step 2 in chloroform (2 ml) was added 2 ml of trifluoroacetic acid, and the mixture was stirred at room temperature for 20 hours. The solvent was distilled off and the residue was purified by C18 silica gel column chromatography (RP-C18, distilled water) to give 43 mg of the title compound (9) (yield 45%).

Provenance & Evidence