Abstract
Molecular and crystal structures of N-alkoxy-N-chloroureas and N,N-dialkoxyureas were studied together with those of N-alkoxyureas as reference compounds. N-Alkoxy-N-chloroureas were found to have an elongated N—Cl bond and a shortened N–O(Alk) bond due to the nO(Alk)→σ*N–Cl anomeric effect. Alcoholysis of N-alkoxy-N-chloro derivatives of urea, N′-arylureas, and carbamates in the presence of silver trifluoroacetate leads to sterically hindered N,N-dialkoxyureas, N,N-dialkoxy-N′-arylureas, and N,N-dialkoxycarbamates, respectively.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 0062–0075, January, 2015.
For Part 63, see Ref. 1.
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Shtamburg, V.G., Kostyanovsky, R.G., Tsygankov, A.V. et al. Geminal systems. Russ Chem Bull 64, 62–75 (2015). https://doi.org/10.1007/s11172-015-0822-9
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DOI: https://doi.org/10.1007/s11172-015-0822-9