Benzene reaction with trifluoropropene

A similar mechanism operates in the reaction of 3,3,3-trifluoropropene with benzene and aluminum chloride [12 13] Perfluorophenylpropene undergoes intramolecular electrophilic attack m a rare example of ring closure at a C -F bond [14] (equation 11)... 

Fluorobenzene is readily alkylated with alkenes in the presence of protic acids, however, the isomenc purity of the product is poor, and polysubstitution can result Thus, propene and sulfuric acid alkylate fluorobenzene at 20 C to yield a 45 55 ortho/para ratio of the inonoalkyl product m addition to di- and triiso propylfluorobenzene [i5] The reaction of benzene and trifluoropropene at 25 °C in HF-BF3 gives a mixture of mono-, bis-, and tns(3,3,3-trifluoropropyl)ben zene [72, 75] (equation 12)... 

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