Diisopropylethylamine → HCID 57750396, compound

Participants

Reaction Conditions

Reaction Steps

O-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (55.2 mg, 0.15 mmol) was added to 4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid (Intermediate 1) (50 mg, 0.14 mmol) and N-ethyldiisopropylamine (0.029 mL, 0.17 mmol) in NMP (5 mL). The resulting solution was stirred at 50° C. for 10 minutes then cooled to ambient temperature. 1-(4-Chlorophenyl)-3-methoxypropan-1-amine (Intermediate 100) (27.6 mg, 0.14 mmol) was added as a solution in NMP (2 mL). The resulting mixture was stirred at 22° C. for 16 hours. The reaction mixture was diluted with EtOAc (75 mL) and washed sequentially with water (6×75 mL), and saturated brine (50 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 1 to 4% (10:1 MeOH/conc. NH3 (aq)) in DCM. Pure fractions were evaporated to dryness to afford tert-butyl 4-(1-(4-chlorophenyl)-3-methoxypropylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate (52.0 mg, 69.2%) as a white solid.

Provenance & Evidence