2-Methyl-2-butene → HCID 58492412, Verbindung

3-[5-Fluoro-3-(4-methoxyphenyl)-4-oxo-8-propoxy-4H-quinolin-1-yl]propionaldehyde (1.0 g, 2.61 mmol) was dissolved in water (10 ml), tert-butyl alcohol (20 ml) and dichloromethane (20 ml). Sodium chlorite (3.2 g, 35.4 mmol), 2-methyl-2-butene (19.86 gm, 283 mmol) and sodium-dihydrogenphosphate dihydrate (2 g, 2.61 mmol) were added to the resulting solution, and the solution was stirred at room temperature for 1 hour. Water was added to the reaction mixture, the mixture was extracted with dichloromethane, and then washed with water and dried over anhydrous sodium sulfate. The dried product was concentrated under reduced pressure. The residue was purified using silica gel column chromatography (dichloromethane:ethyl acetate=50:50→0:100). The purified product was concentrated to dryness under reduced pressure, giving a pale yellow powder of 3-[5-fluoro-3-(4-methoxyphenyl)-4-oxo-8-propoxy-4H-quinolin-1-yl]propionic acid (710 mg, yield: 68%).

1. extractionthe mixture was extracted with dichloromethane
2. washwashed with water
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationThe dried product was concentrated under reduced pressure
5. customThe residue was purified
6. concentrationThe purified product was concentrated to dryness under reduced pressure

ORD-Eintrag

ord-ac065cb7d47741638b233a953f184d8c

Quelldatensatz

uspto-grants-2013_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08592593B2