Diisopropylethylamine → HCID 178487218, compound

Participants

Reaction Steps

HATU (234 mg, 0.61 mmol) was added to a solution of (R)—N-(3,5-difluoro-4-(trimethylsilyl)phenyl)-6-methoxy-1,2,3,4-tetrahydroisoquinoline-1-carboxamide (200 mg, 0.51 mmol), DIEA (0.175 mL, 1.02 mmol) and trans-cyclobutane-1,3-dicarboxylic acid (111 mg, 0.77 mmol) in DMF (2.0 mL) at room temperature, and the mixture was stirred at room temperature for 5 hr. To the reaction mixture was added water, and the mixture was extracted with ethyl acetate. The organic layer was washed with brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (solvent gradient; 20→90% ethyl acetate/hexane), and then preparative HPLC (C18, mobile phase: water/acetonitrile (containing 0.1% TFA)) to give the title compound (32.1 mg, 0.062 mmol, 12.13%) as a white solid.

Provenance & Evidence