Triethylamine → HCID 178525103, compound

Participants

Reaction Steps

To an ice-cooled solution of (±)-5-[4-chloro-2-(1,2,3,4-tetrahydro-isoquinolin-1-yl)-phenoxymethyl]-isoxazol-3-ol (49 mg, 0.138 mmol, 1.0 eq.) and NEt3 (58 μL, 0.414 mmol, 3.0 eq.) in DCM (3.8 mL), benzyl chloroformate (23 μL, 0.152 mmol, 1.1 eq.) was added dropwise. Upon completion of the addition, the cooling bath was removed and the suspension was stirred at r.t. for 4 hours. The reaction was quenched with 1M aq. citric acid soln. (3.8 mL). The layers were separated. The aq. phase was extracted with DCM (3×). The comb. org. phases were concentrated in vacuo. The residue, redissolved in DMF, was purified by prep. HPLC (column: Waters XBridge, 30×75 mm, 10 um, UV/MS, acidic conditions) and evaporated (genevac) to give the desired product as a pale yellow solid.

Provenance & Evidence