4-Methylmorpholine → HCID 68157628, compound

Participants

Reaction Steps

A mixture of 3-(2-amino-5-fluorophenylamino)azetidine-1-carboxylic acid tert-butyl ester (15.5 mmol), (S)-2-benzyloxycarbonylaminopropionic acid (3.81 g, 17.1 mmol), HOAt (2.32 g, 17.1 mmol), 4-methylmorpholine (3.75 mL, 34.1 mmol) and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (3.27 g, 17.1 mmol) in DCM (53 mL) was stirred at RT for 2 h. The reaction mixture was partitioned between EtOAc and a saturated aqueous solution of NaHCO3. The aqueous phase was further extracted with EtOAc (×3) and the combined organic fractions were washed with water, followed by brine, then dried (Na2SO4) and concentrated in vacuo to afford the title compound as a yellow oil (quantitative). LCMS (Method B): RT 3.63 min [M+H]+ 487.3.

Provenance & Evidence