Trifluoroacetic acid → HCID 22708205, compound

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Reaction Steps

0.842 g (1.49 mmol) of the compound from Example 3-7 is initially charged in 10 ml of dichloromethane. At room temperature, 10 ml of trifluoroacetic acid are added. The reaction mixture is stirred at room temperature for 2 hours. The mixture is then concentrated under reduced pressure using a rotary evaporator. The residue is taken up in ethyl acetate and washed with water, 20% strength sodium acetate solution, water and saturated sodium chloride solution. The organic phase is dried over magnesium sulphate and freed from the solvent under reduced pressure. The product is purified chromatographically on silica gel (dichloromethane/methanol 30:1) and then dried under reduced pressure. This gives 0.648 g (85% of theory) of the title compound.

Provenance & Evidence