Diisopropylethylamine → tert-butyl 4-(1-(4-chlorophenyl)-4-hydroxybutylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate

Participants

Reaction Conditions

Reaction Steps

O-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (166 mg, 0.44 mmol) was added portionwise to 4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid (Intermediate 1) (150 mg, 0.42 mmol), 4-amino-4-(4-chlorophenyl)butan-1-ol (Intermediate 16) (83 mg, 0.42 mmol) and N-ethyldiisopropylamine (0.087 ml, 0.50 mmol) in DMF (2.0 mL) at 20° C. The resulting solution was stirred at 20° C. for 3 hours then quenched in water (10 ml) to give a pale yellow ppt. The precipitate was collected by filtration, washed with water and dried under vacuum to afford tert-butyl 4-(1-(4-chlorophenyl)-4-hydroxybutylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate (152 mg, 67.4%) as a cream solid, which was used without further purification.

Provenance & Evidence