Pyridine → HCID 67441318, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of amine 262 (2.86 g, 6.46 mmol) and pyridine (1.04 mL, 12.93 mmol) in DMF (50 mL) at 0° C. was added phenyl chloroformate (973 μl, 7.76 mmol). After 30 min, cyclopropylamine (1.14 mL, 16.16 mmol) was added at 0° C. and the reaction mixture was heated at 60° C. for 45 min. More cyclopropylamine (1 mL, 14.18 mmol) was added and the reaction mixture was heated at 60° C. for an additional 10 min. After cooling to RT, the reaction mixture was quenched by addition of water to form a precipitate. The solid was collected by filtration, washed with water and dried under vacuum for 2 h. The residue was purified by Biotage (SNAP 80 g cartridge; MeOH/DCM: 0/100 to 10/90 over 20 CV). The desired fractions were collected, concentrated, triturated with MTBE and dried under high vacuum to afford the title compound 263 (2.95 g, 5.61 mmol, 87% yield) as a pink solid. MS (m/z): 526.60 (M+H).

Provenance & Evidence