(3-methoxynaphthalen-1-yl) trifluoromethanesulfonate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 3-methoxynaphthalene-1-yl trifluoromethanesulfonate (2.7 g, 8.82 mmol), 5-phenyl-2-thiopheneboronic acid (2.7 g, 13.24 mmol), sodium carbonate (1.4 g, 13.24 mmol) was mixed in de-gassed toluene (50 ml) and ethanol (50 ml), under nitrogen. Pd(PPh3)4 (153 mg, 1 mol %) was added and the mixture heated to reflux for 18 h. The solution was allowed to cool, poured into water (200 ml), extracted with dichloromethane (2×100 ml), dried (Na2SO4), and the solvent removed under reduced pressure. The resulting residue was dissolved in DCM and filtered through a short plug of silica. The solvent was removed under reduced pressure to give a red/brown solid, which was flash chromatographed on silica using EtOAc-hexane (1:9). The fractions were combined and the solvent removed to give the title compound (1.87 g, 67%) as a green solid. the mixture heated to reflux for 18 h to cool extracted with dichloromethane (2×100 ml) dried (Na2SO4) the solvent removed under reduced pressure The resulting residue was dissolved in DCM filtered through a short plug of silica The solvent was removed under reduced pressure to give a red/brown solid, which chromatographed on silica the solvent removed

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Trifluoromethanesulfonic anhydride (9.35 g, 32.8 mmol) was added dropwise to a solution of 3-methoxy-1-naphthol (5.77 g, 32.8 mmol) and Et3N (10 ml) in dichloromethane (100 ml) at 0° C. with stirring. After 1 h the resulting solution was washed with HCl (50 ml, 1 M) and saturated Na2CO3 (50 ml), dried (MgSO4) and the solvent removed under reduced pressure. The residue was chromatographed on silica using EtOAc (7% in hexanes) to give the title compound (7.45 g, 74%) as a colourless oil. After 1 h the resulting solution was washed with HCl (50 ml, 1 M) and saturated Na2CO3 (50 ml) dried (MgSO4) the solvent removed under reduced pressure The residue was chromatographed on silica

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Trifluoromethanesulfonic anhydride (9.35 g, 32.8 mmol) was added dropwise to a solution of 3-methoxy-1-naphthol (5.77 g, 32.8 mmol) and Et3N (10 ml) in dichloromethane (100 ml) at 0° C. with stirring. After 1 h the resulting solution was washed with HCl (50 ml, 1 M) and saturated Na2CO3 (50 ml), dried (MgSO4) and the solvent removed under reduced pressure. The residue was chromatographed on silica using EtOAc (7% in hexanes) to give the title compound (7.45 g, 74%) as a colourless oil. After 1 h the resulting solution was washed with HCl (50 ml, 1 M) and saturated Na2CO3 (50 ml) dried (MgSO4) the solvent removed under reduced pressure The residue was chromatographed on silica