Ferric chloride in acetic anhydride promotes the conversion of α-t-butoxy- or α-acetoxy-acrylonitriles into α-acetoxy-αβ-unsaturated imides by the formal addition of acetic acid across the C![[triple bond, length half m-dash]](https://www.rsc.org/images/entities/char_e007.gif)
N bond; the structure of one of the products has been determined by X-ray crystallography.
P. M. Diamond, S. E. Dinizo, R. W. Freerksen, R. C. Haltiwanger and D. S. Watt, J. Chem. Soc., Chem. Commun., 1977, 298 DOI: 10.1039/C39770000298
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