Water → HCID 68679148, compound

6.50 g (18.0 mmol) of methyl 6-(5-bromo-3-methoxymethyl-3H-thiazol-2-ylideneamino)-pyridine-2-carboxylate was dissolved in 80 ml of tetrahydrofuran, 790 mg (36.0 mmol) of lithium borohydride was added thereto and the mixture was heated under reflux. After 1 hour, 790 mg (36.0 mmol) of lithium borohydride was added thereto followed by further heating under reflux for 1 hour, the reaction mixture was cooled to room temperature and water was added thereto. After water was added until no more bubbling took place, the mixture was extracted with ethyl acetate. The resulting ethyl acetate solution was washed with 100 ml of water for two times and then washed with 100 ml of brine. The organic layer was dried over anhydrous magnesium sulfate and filtered, and the filtrate was concentrated in vacuo. The resulting residue was purified by a silica gel column chromatography to give 2.67 g (8.09 mmol) of the title compound as a white solid.

1. temperaturethe mixture was heated
2. temperatureunder reflux
3. temperatureby further heating
4. temperatureunder reflux for 1 hour
5. customno more bubbling
6. extractionthe mixture was extracted with ethyl acetate
7. washThe resulting ethyl acetate solution was washed with 100 ml of water for two times
8. washwashed with 100 ml of brine
9. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
10. filtrationfiltered
11. concentrationthe filtrate was concentrated in vacuo
12. customThe resulting residue was purified by a silica gel column chromatography

ORD record

ord-ba894600066c47eda29a7c7cad1bdcc6

Source dataset

uspto-grants-2010_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07834018B2