α-Hydroxy-imidate salts reacted with oxalyl chloride to form morpholine-2,3,5-triones, whereas the free bases gave oxazolidine-2,4-diones with the same reagent. Although imidate bases did not react with NN′-dicyclohexylcarbodi-imide, their salts gave 2-cyclohexylimino-oxazolidin-4-ones.
M. I. Butt, D. G. Neilson, K. M. Watson and R. Hull, J. Chem. Soc., Perkin Trans. 1, 1976, 542 DOI: 10.1039/P19760000542
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