Photosubstitution of aryl fluorides by primary and secondary amines can give both ‘normal’ and cine-substitution products, probably by an addition-elimination mechanism; ortho-type photoadducts are also produced in most cases, although p-difluorobenzene gives the para-adduct (6) with diethylamine.
D. Bryce-Smith, A. Gilbert and S. Krestonosich, J. Chem. Soc., Chem. Commun., 1976, 405 DOI: 10.1039/C39760000405
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