Potassium Carbonate → HCID 69327875, compound

Temperature

45 °C

4-Bromothiophenol (1.9 g, 10 mmol) and potassium carbonate (1.5 g, 11 mmol) were stirred in acetone (40 ml). Tetrahydrofurfurylbromide (2 g, 12 mmol) was added dropwise, and the mixture was then heated at 45° C. for 2 hours. The mixture was allowed to cool, the insolubles removed by filtration and the filter pad washed with acetone. The volatiles were removed from the filtrate by evaporation to give crude 1-(2-tetrahyrofurylmethylthio)-4-bromobenzene (3.1 g) an oil (m/z 273). This crude product was dissolved in methanol (60 ml) and water (10 ml). Oxone (8 g) added in portions and the mixture stirred for 2.5 hours. Water (20 ml) was added and the methanol was removed by evaporation. Further water (20 ml) was added to the aqueous residue, which was then extracted with DCM (2×50 ml). The extracts were combined, washed with brine (15 ml), dried and the solvent evaporated. The residue was purified by chromatography on silica eluting with DCM/isohexane/EtOAc (10:8:2) to give the title compound (1.7 g, 56%) as a solid. NMR (CDCl3): 1.56 (m, 1H), 1.88 (m, 2H), 2.13 (m, 1H), 3.20 (dd, 1H), 3.39 (dd, 1H), 3.72 (m, 2H), 4.26 (m, 1H), 7.68 (d, 2H), 7.79 (d, 2H); m/z 305.

1. temperatureto cool
2. customthe insolubles removed by filtration
3. washthe filter pad washed with acetone
4. customThe volatiles were removed from the filtrate by evaporation

ORD record

ord-c94d1ee9d25644f9822610382cdf635e

Source dataset

uspto-grants-2008_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07465728B2