3,4-Difluoroanisole → 1-Fluoro-4-methoxy-2-methylsulfanylbenzene

Temperature

60 °C

1,2-Difluoro-4-methoxy-benzene (100 mg, 0.69 mmol) and sodium methanethiolate (148 mg, 2.08 mmol) were dissolved in N,N-dimethylformamide (2 mL) and the reaction mixture stirred at 60° C. for 18 hours. Additional sodium methanethiolate (99 mg, 139 mmol) was added and the reaction mixture heated to 100° C. for 18 hours. The reaction mixture was diluted with water and extracted with ether (×2). The ether extracts were washed with water (×2), dried over magnesium sulphate and concentrated in vacuo. The residue was taken up in pentane:ether 1:1 mixture (2 mL) and filtered through a plug of silica in a pipette, washing through with pentane:ether 1:1 mixture (5 mL). The reaction mixture was concentrated in vacuo to yield the title product as a colourless oil, 135 mg.

1. temperaturethe reaction mixture heated to 100° C. for 18 hours
2. extractionextracted with ether (×2)
3. washThe ether extracts were washed with water (×2)
4. dry with materialdried over magnesium sulphate
5. concentrationconcentrated in vacuo
6. filtrationfiltered through a plug of silica in a pipette
7. washwashing through with pentane:ether 1:1 mixture (5 mL)
8. concentrationThe reaction mixture was concentrated in vacuo

ORD record

ord-8818197c2223438481abe590664ae904

Source dataset

uspto-grants-2006_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07056934B2