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This article is cited in 6 scientific papers (total in 6 papers)
Sterically hindered nitrogen inversion in five-membered cyclic hydrazines
S. V. Usacheva, G. A. Nikiforovb, Yu. A. Strelenkoc, P. A. Belyakovc, I. I. Chervina, R. G. Kostyanovskya
a N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russian Federation
b N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russian Federation
c N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation
Abstract:
We found that (PriNH)2 with MeCHO form only pyrazoline 1 because of the competitive crotonization of the latter followed by reaction with hydrazine; pyrazoline 2, pyrazolidinones 6 and 9, pyrazolidinol 8 and pyrazolidine 7, in which the inversion of nitrogen atoms is hindered by bulky PriN substituents, were prepared for the first time, and the inversion barriers were determined.
Citation:
S. V. Usachev, G. A. Nikiforov, Yu. A. Strelenko, P. A. Belyakov, I. I. Chervin, R. G. Kostyanovsky, “Sterically hindered nitrogen inversion in five-membered cyclic hydrazines”, Mendeleev Commun., 12:5 (2002), 189–193
Linking options:
https://www.mathnet.ru/eng/mendc4156 https://www.mathnet.ru/eng/mendc/v12/i5/p189
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