Triethylamine → HCID 69692575, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (S)-3-[4-acetylamino-2-(2-quinolin-5-yl-ethoxy)-benzenesulfonylamino]-succinamic acid tert-butyl ester (0.24 g, 0.40 mmol) in dry THF (10 mL) at 0° C. was added Et3N (0.14 mL, 1.0 mmol). A solution of trifluoroacetic anhydride in THF (0.5 M, 0.50 mmol) was added to the solution dropwise. After 30 min of stirring at 0° C., the ice bath was removed. The reaction mixture was allowed to warm up to room temperature over 4 h. The reaction mixture was worked up by addition of EtOAc (100 mL) then followed by washing the organic phase with saturated NaHCO3. Drying and removal of solvents under vacuum gave 0.20 g (92%) of (S)-3-[4-acetylamino-2-(2-quinolin-5-yl-ethoxy)-benzenesulfonylamino]-3-cyano-propionic acid tert-butyl ester as a tan solid. MS (APCI) m/z 539.1 (M+1).

Provenance & Evidence