Аннотация:
2,3-Dialkyl-l,4-dicyclopropylbutane-1,4-diones were prepared in one pot from symmetrical acetylenes, ethylaluminum dichloride and methyl cyclopropanecarboxylate in the presence of magnesium metal and Cp2TiCl2 (10 mol%) as a catalyst in 62–66% yield. Comparison of 1,4-dicyclopropylbutane-1,4-diones with other analogues to form furans in the course of the Paal–Knorr reaction was made by quantum chemical DFT calculations.
Образец цитирования:
L. O. Khafizova, M. G. Shaibakova, N. M. Chobanov, T. V. Tyumkina, R. R. Gubaidullin, N. R. Porod'ko, U. M. Dzhemilev, “Effective one-pot synthesis of 2,3-dialkyl-1,4-dicyclopropyl-butane-1,4-diones catalyzed by Cp2TiCl2”, Mendeleev Commun., 26:3 (2016), 223–225
Nuri M. Chobanov, Mariya G. Shaibakova, Natalya R. Popod'ko, Leila O. Khafizova, Usein M. Dzhemilev, “Ti-catalyzed reactions of unsymmetrical alkynes with esters of monocarboxylic acids and EtAlCl 2 : An efficient catalytic method for the synthesis of tetrasubstituted furans”, Tetrahedron, 73:38 (2017), 5639
Leila O. Khafizova, Mariya G. Shaibakova, Nuri M. Chobanov, Tat'yana V. Tyumkina, Rinat R. Gubaidullin, Natal'ya R. Popod'ko, Usein M. Dzhemilev, “ChemInform Abstract: Effective One‐Pot Synthesis of 2,3‐Dialkyl‐1,4‐dicyclopropyl‐butane‐1,4‐diones Catalyzed by Cp2TiCl2.”, ChemInform, 47:40 (2016)
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