Methyl Acetate → HCID 117696450, compound

Participants

Reaction Conditions

Reaction Steps

n-Butyllithium (2.5 M in hexanes, 28 mL, 70 mmol) is added dropwise to diisopropylamine (10 mL, 70 mmol) in THF (100 mL) at −78° C. After 1 h at −78° C. and 15 min at 0° C. the reaction mixture is cooled to −50° C. and N-tert-butyl-4-chloro-3-methyl-pyridine-2-carboxamide (5.7 g, 25 mmol) in THF (50 mL) is added dropwise and stirring is continued for 30 min at −40° C. Methyl acetate (2.2 mL, 28 mmol) is added and stirring is continued for 30 min at −40° C. Saturated NH4Cl (2 mL), water (6 mL) and ethyl acetate are added and the organic layer is separated, dried and evaporated under reduce pressure to give a residue that is purified by flash chromatography (eluent 0-10% EtOAc/cyclohexane) to furnish 4-chloro-3-(2-oxo-propyl)-pyridine-2-carboxylic acid tert-butylamide (3.7 g, 55%).

Provenance & Evidence