Diisopropylethylamine → (R)-tert-butyl 1-(5-carbamoyl-6-(4-(diethylamino)phenylamino)pyridin-2-yl)piperidin-3-ylcarbamate

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-chloro-2-(4-(diethylamino)phenylamino)nicotinamide (1.669 g, 5.24 mmol), (R)-tert-butyl piperidin-3-ylcarbamate (1.573 g, 7.85 mmol), and DIEA (1.829 mL, 10.47 mmol) in N-methyl-2-pyrrolidinone (10 mL) was heated at 100° C. overnight. The reaction mixture was diluted with ethyl acetate, washed with satd. NaHCO3, water, and concentrated. The resulting residue was purified by MPLC (ISCO, hexane/ethyl acetate, 80 g silica gel column) to give 1.41 g (R)-tert-butyl 1-(5-carbamoyl-6-(4-(diethylamino)phenylamino)pyridin-2-yl)piperidin-3-ylcarbamate as a yellow solid. LCMS: (M+H)+=483.3.

Provenance & Evidence