Shtamburg, V. G.Kostyanovsky, R. G.Tsygankov, A. V.Shtamburg, V. V.Shishkin, O. V.Zubatyuk, R. I.Mazepa, A. V.Kravchenko, S. V.2018-06-262018-06-262015Geminal systems 64.*N-Alkoxy-N-chloroureas and N,N-dialkoxyureas / V. G. Shtamburg [et al.] // Russian Chemical Bulletin. – 2015. – Vol.64, № 1. – P. 62-75.https://repository.kpi.kharkov.ua/handle/KhPI-Press/36916Molecular 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)*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.enN-alkoxy-N-chloroureasanomeric effectN-acyloxy-N-alkoxyureasN-alkoxy-N-chlorocarbamatesalcoholysisureascarbamatesArticle