Add time:09/09/2019 Source:sciencedirect.com
A variety of ketoximes undergo the Beckmann rearrangement when heated with 0.5 molar equiv. of chloral (neat melt/∼130°C), to furnish the corresponding amides in excellent yields (generally 80–95%) after simple work-up. (Aromatic aldoximes dehydrated to the corresponding nitriles in excellent yields under similar conditions.) The absence of solvent, Brønsted acids, strong Lewis acids and by-products, and a simple work-up characterise the procedures.
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