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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Different reactivity of hydroxylamine with carbamoyl azides and carbamoyl cyanides: synthesis of hydroxyureas and carbamoyl amidoximes.

The carbamoylating agents carbamoyl azides and carbamoyl cyanides (aka cyanoformamides) react with hydroxylamine in different ways, leading in the first case to N-hydroxyureas and, in the case of carbamoyl cyanides, to carbamoyl amidoxime derivatives. The synthetic procedure developed for the latter type of compound, which represents an interesting precursor for heterocyclic structures, allowed the highly efficient preparation of a wide selection of examples. The Z configuration of the double bond in the amidoxime moiety was proposed on the basis of comparison between experimental and calculated (13)C and (15)N NMR chemical shift values for the isopropyl and benzyl derivatives.[1]

References

  1. Different reactivity of hydroxylamine with carbamoyl azides and carbamoyl cyanides: synthesis of hydroxyureas and carbamoyl amidoximes. Paz, J., Pérez-Balado, C., Iglesias, B., Muñoz, L. J. Org. Chem. (2010) [Pubmed]
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