2-Bromo-6-methoxynaphthalene → HCID 178487492, Verbindung

THF (14 ml) was added to magnesium (0.55 g, 22.4 mmol) under a nitrogen atmosphere. Iodine (3 mg) was added and the mixture was stirred. While keeping the mixture at not higher than 50° C., a solution of 2-bromo-6-methoxynaphthalene (5.15 g, 21.7 mmol.) in THF (12 ml) was added dropwise, and the mixture was stirred at 15 to 25° C. for 1.5 h. A solution of 1-(1H-imidazol-4-yl)-2-methyl-1-propanone (1 g, 7.24 mmol) in THF (5 ml) was added dropwise at −20° C., and the mixture was stirred at 15 to 25° C. for 8 h. A saturated aqueous sodium hydrogencarbonate (5 ml) and water (5 ml) were successively added dropwise. After stirring, the mixture was passed through celite. After partitioning, the aqueous layer was extracted with ethyl acetate (5 ml). The organic layer was combined, and the mixture was washed with saturated brine and concentrated under reduced pressure. The concentration residue was broken up with ethyl acetate (6 ml) and isopropyl ether (12 ml), and the crystals were collected by filtration and washed with isopropyl ether (12 ml). The crystals were dried in vacuo (40° C.) to give 1-(1H-imidazol-4-yl)-1-(6-methoxynaphthalen-2-yl)-2-methylpropanol (1.8 g, yield 84%).

1. customhigher than 50° C.
2. stirringthe mixture was stirred at 15 to 25° C. for 1.5 h
3. stirringthe mixture was stirred at 15 to 25° C. for 8 h
4. stirringAfter stirring
5. customAfter partitioning
6. extractionthe aqueous layer was extracted with ethyl acetate (5 ml)
7. washthe mixture was washed with saturated brine
8. concentrationconcentrated under reduced pressure
9. filtrationthe crystals were collected by filtration
10. washwashed with isopropyl ether (12 ml)
11. customThe crystals were dried in vacuo (40° C.)

ORD-Eintrag

ord-82e6d667b02a4ad3884c2e2c36c38202

Quelldatensatz

uspto-grants-2004_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06713632B1