Conclusions
-
1.
Barriers to amide rotation in substituted N-alkoxyureas Me2NCON(OR)X (where X is H, Cl, OR, or
have been determined; they increase in the sequence tetraalkylurea < N-alkoxy < N-chloro-N-alkoxy- and N,N-dialkoxyureas.
-
2.
Restricted processes in N-chloro-N-alkoxyureas correspond to rotation around N-CO and N-O bonds, and in N,N-dialkoxyureas to rotation around the N-CO bond and either rotation around the N-O bond or inversion of the N atom.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1148–1152, May, 1986.
For Communication 44, see [1].
For Communication 29, see [2].
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Chervin, I.I., Nosova, V.S., Rudchenko, V.F. et al. Asymmetric nitrogen Communication 47. Geminal systems communication 31. amide rotation and nitrogen inversion in substituted N-alkoxyureas. Russ Chem Bull 35, 1041–1044 (1986). https://doi.org/10.1007/BF00955377
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DOI: https://doi.org/10.1007/BF00955377