Trifluoroacetic acid → (3R)-6-cyclohexyl-3-{3-[(ethylamino)methyl]-1,2,4-oxadiazol-5-yl}hexanoic acid

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Reaction Steps

tert-butyl(3R)-6-cyclohexyl-3-{3-[(ethylamino)methyl]-1,2,4-oxadiazol-5-yl}hexanoate (preparation 74) (288 mg, 0.76 mmol) was treated with TFA (5 ml) and stirred at room temperature for 1 hour. The reaction mixture was diluted with DCM and the solvents removed under reduced pressure. The residue was azeotroped from toluene (×3) and DCM (×3) to afford the title compound (373 mg).

Provenance & Evidence