Stereoselective cyanation of β-bromo-β-fluorostyrenes using potassium cyanide and promoted by (CH3CN)4Cu+ BF4−

A general method for the synthesis of α-fluorocinnamonitrile based on the stereoselective reaction between β-bromo-β-fluorostyrene and potassium cyanide, promoted by (CH3CN)4Cu+ BF4− in 1-methyl-2-pyrrolidinone (NMP), is described.

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