1,2-Dichloroethane → [2-Methyl-2-({4-[2-(6-methyl-pyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl]-quinoline-7-carbonyl}-amino)-propyl]-carbamic Acid Tert-Butyl Ester

Participants

Reaction Steps

To a solution of 4-[2-(6-methyl-pyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl]-quinoline-7-carboxylic acid (0.16 g, 0.43 mmol), (2-amino-2-methyl-propyl)-carbamic acid tert-butyl ester (0.09 g, 0.47 mmol), EDC (0.09 g, 0.47 mmol), 1-hydroxybenzotriazole (0.06 g, 0.47 mmol) in dichloromethane (8.6 mL) is added N,N-diisopropylethylamine (0.25 mL, 1.29 mmol). The mixture is stirred at room temperature for 18 hand concentrated in vacuo. The residue is taken up in ethyl acetate, washed with water and saturated aqueous sodium chloride, dried over sodium sulfate and concentrated in vacuo. The residue is chromatographed on SiO2 (methanol/dichloromethane/2:98) to yield the title compound 0.21 g (91%) as a white solid.

Provenance & Evidence