Triethylamine → HCID 131722147, compound

To a solution of 6-(2-methoxyethoxy)-4-oxo-1,4-dihydro-1,5-naphthyridine-3-carboxylic acid (106 mg, 0.4 mmol) and triethylamine (117 mL, 0.84 mmol) in 4:1 tetrahydrofuran: N,N- dimethylformamide (2 mL) at 0° C. was added ethyl chloroformate (66 mL, 0.82 mmol). After stirring at O C for 1.25 h, 4-[(N-tert-butoxycarbonyl)-methylaminomethyl)benzylamine hydrochloride (120 mg, 0.42 mmol) and triethylamine (59 mL, 0.42 mmol) was added. The reaction mixture was stirred at 0° C. for 0.75 h, then allowed to ambient temperature and stirred for 20 h. N,N-Dimethylethylenediamine (132 mL, 1.2 mmol) was added, the reaction mixture stirred for 1 h, then concentrated in vacuo. The residue was cooled in an ice bath, saturated aqueous ammonium chloride was added and the mixture extracted with dichloromethane. The organic layer was washed with saturated aqueous sodium chloride, dried over sodium sulfate, filtered, and concentrated to give 177 mg of crude N-[4-(N-tert butoxycarbonyl)-methylaminomethyl)benzyl] 6-(2-methoxyethoxy)-4-oxo-1,4-dihydro-1,5-naphthyridine-3-carboxamide.

1. stirringThe reaction mixture was stirred at 0° C. for 0.75 h
2. customallowed to ambient temperature
3. stirringstirred for 20 h
4. stirringthe reaction mixture stirred for 1 h
5. concentrationconcentrated in vacuo
6. temperatureThe residue was cooled in an ice bath
7. additionsaturated aqueous ammonium chloride was added
8. extractionthe mixture extracted with dichloromethane
9. washThe organic layer was washed with saturated aqueous sodium chloride
10. dry with materialdried over sodium sulfate
11. filtrationfiltered
12. concentrationconcentrated

ORD record

ord-9d4411bd04ed41d78bc752f9eae4c38b

Source dataset

uspto-grants-2000_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06143760