4-Methylanisole → HCID 19363317, compound

Temperature

0 °C

4-Methoxytoluene (100 ml, 0.793 mol) and methylene chloride (300 ml) were mixed, and this solution was cooled to 0° C. To this solution was added aluminum chloride (190.3 g, 1.44 mol), and then heptanoyl chloride (123 ml, 0.8 mol) was added dropwise to this solution over 2 hours. The reaction mixture was heated to room temperature, and stirred for 2 hours. The reaction mixture was poured onto ice (400 g) to stop the reaction. The aqueous layer was extracted with chloroform (300 ml). The organic layers were combined, washed successively with water, a saturated aqueous sodium hydrogencarbonate solution and saturated brine (100 ml each), and dried over anhydrous magnesium sulfate. The drying agent was filtered off, the filtrate was concentrated under reduced pressure, and the obtained residue was purified by distillation (120 pa, 125-140° C.) to give 1-(2-hydroxy-5-methylphenyl)heptan-1-one (127.8 g, 77%/) as a colorless oil.

1. temperatureThe reaction mixture was heated to room temperature
2. additionThe reaction mixture was poured onto ice (400 g)
3. customthe reaction
4. extractionThe aqueous layer was extracted with chloroform (300 ml)
5. washwashed successively with water
6. dry with materiala saturated aqueous sodium hydrogencarbonate solution and saturated brine (100 ml each), and dried over anhydrous magnesium sulfate
7. filtrationThe drying agent was filtered off
8. concentrationthe filtrate was concentrated under reduced pressure
9. distillationthe obtained residue was purified by distillation (120 pa, 125-140° C.)

ORD record

ord-87f70811ecfb4bc683456a8dae668aaa

Source dataset

uspto-grants-2000_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06017919