N,1-dimethylpyrrolidin-3-amine → HCID 178423457, compound

Participants

Reaction Conditions

Reaction Steps

Method Q—Step a To a mixture of 1-[4-chloro-3-(5-methyl-1H-benzoimidazol-2-yl)-phenyl]-piperidine-4-carboxylic acid hydrochloride (obtained as described in general method 3,4, step e) (0.01 g, 0.25 mmol) in dcm (2 mL), HATU (0.10 g, 0.26 mmol), TEA (0.07 mL, 0.53 mmol) and methyl-(1-methyl-pyrrolidin-3-yl)-amine (0.03 g, 0.31 mmol) were added. The reaction mixture was heated at 35° C. overnight, cooled to room temperature, washed with ammonium chloride solution (2 mL), filtered through a phase separator and organic phase was filtered by SCX column (eluent: first dcm:MeOH/1:1 then NH3 in MeOH (2N)). This work up was done using the Zinsser Speedy (version 6.1.3). The crude was then purified by flash chromatography (eluent: gradient from EtOAc to EtOAc:NH3 in MeOH (2N)/10:1) to obtain 0.04 g of the title compound (37%). 1H-NMR (400 MHz, CD3OD): δ 1.76-1.93 (5H, m), 2.08-2.23 (2H, m), 2.36-2.48 (6H, m), 2.51-3.09 (9H, m), 3.83-3.86 (2H, m), 5.13-5.20 (1H, m), 7.09-7.13 (2H, m), 7.38-7.40 (3H, m), 7.51 (1H, bs); m/z 466 (M+H)+, retention time (method b)=2.30 (10 min run)

Provenance & Evidence