Triethylamine → HCID 178419181, compound

Participants

Reaction Conditions

Reaction Steps

A stirred suspension of Intermediate 76 (830 mg) in Dichloromethane (DCM) (40 mL), under nitrogen, was treated with triethylamine (0.501 mL) then cooled to ca. 0° C. (ice bath). Methanesulfonyl chloride (0.222 mL) was added via syringe, then the cooling bath was removed and stirring continued for 2 h. The solution was partitioned between aqueous ammonium chloride (200 ml) and DCM (200 ml). The layers were separated and the aqueous phase was further extracted with DCM (200 ml). The combined organic extracts were washed with water (200 mL), dried (Na2SO4), filtered through a hydrophobic frit and evaporated in vacuo. The crude product was purified by column chromatography (silica, 0-25% Methanol in DCM). The appropriate fractions were combined and concentrated to afford the title compound, 368 mg. LC/MS (M-BH2)-411/413, Rt 2.18 mins (5 min run, TFA modifier).

Provenance & Evidence