U 62 Unusual ring-chain tautomerism in bicyclo[4.2.0]octane derivatives [Text] / V. Yu. Korotaev, A. Yu. Barkov, P. A. Slepukhin, M. I. Kodess, V. Ya. Sosnovskikh // Tetrahedron Letters. - 2011. - Vol. 52, № 23. - P3029-3032 : рис. Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A new type of ring-chain tautomerism, which consists of the reversible conversion of bicyclo[4.2.0]octane derivatives into trisubstituted enamines was found and studied by 1H NMR spectroscopy. The starting materials were prepared by the stereoselective reaction of (E)-3,3,3-trichloro-1-nitropropene with cyclohexanone enamines \\\\Expert2\\nbo\\Tetrahedron Letters\\2011, v. 52, p. 3029.pdf |