Trifluoroacetic acid → [6-(5-{3-Cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-5-methyl-1,2,3,4-tetrahydro-1-isoquinolinyl]acetic acid trifluoroacetate

Participants

Reaction Steps

Trifluoroacetic acid (1.0 ml, 13.0 mmol) was added dropwise at 25° C. under nitrogen to a solution of (6-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-2-{[(1,1-dimethylethyl)oxy]carbonyl}-5-methyl-1,2,3,4-tetrahydro-1-isoquinolinyl)acetic acid (Preparation 23; 42 mg, 0.079 mmol) in dichloromethane (3.0 ml) and the mixture was stirred at room temperature for ca. 2 h. The solvent was removed in vacuo and the residue co-evaporated with toluene, dried for 20 min under vacuum then triturated with diethyl ether to give the title compound (20 mg) as a white solid.

Provenance & Evidence