Triphenylphosphine → 1-(1-Trifluoromethylprop-1-en-3-yloxy)-2-bromo-4-fluorobenzene

Beteiligte Stoffe

Reaktionsschritte

A solution of 2.10 gm (16.7 mMol) 1-trifluoromethylprop-1-en-3-ol, 3.19 gm (16.7 mMol) 2-bromo-4-fluorophenol, and 4.81 gm (18.4 mMol) triphenylphosphine in 25 mL dichloromethane was cooled to 0° C. and then 2.9 mL (18.4 mMol) diethyl azodicarboxylate were added. The reaction mixture was stirred for 1 hour at room temperature and then the reaction mixture was directly subjected to flash silica gel chromatography, eluting with 20:1 hexane:ethyl acetate. Fractions containing product were combined and concentrated under reduced pressure to provide 6 gm of crude 1-(1-trifluoromethylprop-1-en-3-yloxy)-2-bromo-4-fluorobenzene.

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