Ammonia → HCID 11281273, compound

Participants

Reaction Conditions

Reaction Steps

Triethylamine (8.8 μL, 0.063 mmol) was added to a solution of (4-{(R)-2-[(E)-4-(3-chlorophenyl)-3-hydroxy-but-1-enyl]-6-oxo-piperidin-1-yl}-butoxy)-acetic acid (12.4 mg, 0.030 mmol) in CH2Cl2 (0.2 mL). After cooling to 0° C., the reaction mixture was treated with ethyl chloroformate (3.2 μL, 0.033 mmol). After 1 h at 0° C., ammonia (0.5 M in 1,4-dioxane, 0.32 mL, 0.16 mmol) was added and the reaction mixture was allowed to warm to rt. After 18 h at rt, the reaction mixture was treated with saturated aqueous NaHCO3 (5 mL) and extracted with CH2Cl2 (3×5 mL). The combined extracts were dried (Na2SO4), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (5%→20% MeOH/CH2Cl2, gradient) afforded 1.3 mg (11%) of the title compound.

Provenance & Evidence