Sodium Hydroxide → 1-Bromo-3-monofluoromethoxy-5-vinylbenzene

Participants

Reaction Conditions

Reaction Steps

Tri(butyl)vinyltin (10.0 g, 31.4 mmol) was added dropwise to a solution of 1,3-dibromo-5-monofluoromethoxybenzene (8.5 g, 29.9 mmol; see step (iii) above), tetrakis(triphenylphosphine)palladium(0) (690 mg, 0.599 mmol), and 2,6-di-tert-butyl-4-methylphenol (spatula tip) in toluene (100 mL) under nitrogen. The mixture was stirred at 70° C. for 8 h. The mixture was cooled to 0° C. and 1N NaOH (70 mL) was added. After 1 h, the mixture was extracted with CH2Cl2 (3× 300 mL) then, the combined organics were dried (Na2SO4), filtered and concentrated in vacuo. Flash chromatography on silica gel eluting with hexanes afforded the sub-title compound (4.3 g, 57%) as a colourless oil.

Provenance & Evidence