Trifluoroacetic acid → (R)-(3-Aminopiperidin-1-yl)(2-(1-ethyl-1H-pyrrolo[2,3-c]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazol-5-yl)methanone

Participants

Reaction Steps

To a solution of (R)-tert-butyl(1-(2-(1-ethyl-1H-pyrrolo[2,3-c]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazole-5-carbonyl)piperidin-3-yl)carbamate (42 mg, 0.084 mmol) in dichloromethane (DCM) (1 mL) was added TFA (0.258 mL, 3.34 mmol) and the reaction stirred at room temperature for 2 h. The reaction mixture was concentrated in vacuo to afford a yellow oil. This was dissolved in methanol and loaded onto an SCX cartridge (5 g). It was eluted with methanol (3 column volumes) and product eluted as free base with 2M ammonia in methanol. The filtrate from the ammonia fractions was concentrated in vacuo to yield the title compound as a yellow solid (34 mg).

Provenance & Evidence