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ISSN 0012-5008, Doklady Chemistry, 2006, Vol. 409, Part 1, pp. 106–112. © Pleiades Publishing, Inc., 2006. Original Russian Text © O.V. Gulyakevich, A.L. Mikhal’chuk, 2006, published in Doklady Akademii Nauk, 2006, Vol. 409, No. 1, pp. 57–63. CHEMISTRY Keto–Enol Tautomerism of the Anions of b-Di- and b,b'-Tricarbonyl Compounds as a New Prototropy in the Series of Polycarbonyl Compounds O. V. Gulyakevich and A. L. Mikhal’chuk Presented by Academician Yu.D. Tret’yakov February 1, 2006 Received February 1, 2006 DOI: 10.1134/S0012500806070020 β-Dicarbonyl and β,β'-tricarbonyl compounds (b) 1,3-(C,O O,C) prototropy, or bimolecular (β-diCC and β,β'-triCC, respectively) are two groups of isomerization, occurring through intermolecular proton related derivatives in the series of polycarbonyl com- transfer involving the environment molecules [7], for pounds. Some representatives of these groups are example, through six-membered transition states TS endo encountered in natural organisms ranging from or TS . exo microbes, fungi, and plants to insects, amphibia, and (c) 1,5-(O,O' O',O) prototropy (enol–enol tau- mammals and are important for vital activity and have tomerism), or endo exo enol–enol isomerization, valuable biological properties [1, 2]. These compounds which follows either an intramolecular route (monomo- are prepared and used in laboratory practice and in lecular, Z = C or, most
Doklady Chemistry – Springer Journals
Published: Jul 26, 2006
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