Triethylamine → HCID 67246672, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-isopropyl-5-methyl-2-oxo-N-(piperidin-4-ylmethyl)-1,2-dihydroquinoline-3-carboxamide hydrochloride (467 mg, 0.98 mmol, step 4 in preparation 3), tert-butyl 2-bromopropanoate (0.24 mL, 1.47 mmol), and triethylamine (0.41 mL, 2.93 mmol) in tetrahydrofuran (30 mL) was stirred at 70° C. for 23 h. After cooling to room temperature, the mixture was poured onto saturated aqueous sodium hydrogen carbonate (100 mL), and the aqueous layer was extracted with dichloromethane (100 mL×2). The combined organic layer was dried over magnesium sulfate, and concentrated in vacuo. The residue was chromatographed on a column of silica gel eluting with ammonia/methanol/dichloromethane (0.1:1:30) to give 299 mg (65%) of the title compound as a yellow amorphous.

Provenance & Evidence