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- W1969134860 endingPage "10918" @default.
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- W1969134860 abstract "The aromatization of 1,4-dihydropyridines (1,4-DHPs) employing group 4 (Zr and Hf) and 5 (V, Nb, Ta) elements of periodic system has been studied. The reaction with VOCl3 in dichloromethane at room temperature afforded products, substituted pyridines, in high-to-excellent yield. For the first time, the formation of charge-transfer complexes (CTCs) has been evidenced in preorganization step between 1,4-DHP and oxidant before electron transfer. The CTC has been formed only in neutral solvents such as dichloromethane and is characterized by intensive coloration. The aromatization of 1,4-DHP with V2O5 in refluxing acetic acid has found to be superior over microwave promoted reaction in solventless media. The only reasonable explanation was found in polymeric structure of V2O5, which slowly transfer energy of microwaves needed for the activation of the reactants. The solvent polarity dependent oxidative dealkylation of 4-n-propyl-1,4-DHP has been discovered. Unexpectedly, the reaction in acetic acid afforded only 33% of dealkylated product compared to 91% obtained in dichloromethane under the same reaction conditions." @default.
- W1969134860 created "2016-06-24" @default.
- W1969134860 creator A5009179849 @default.
- W1969134860 creator A5013538692 @default.
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- W1969134860 date "2008-11-01" @default.
- W1969134860 modified "2023-10-18" @default.
- W1969134860 title "Rapid, efficient, room temperature aromatization of Hantzsch-1,4-dihydropyridines with vanadium(V) salts: superiority of classical technique versus microwave promoted reaction" @default.
- W1969134860 cites W1491498465 @default.
- W1969134860 cites W1605291736 @default.
- W1969134860 cites W1964261144 @default.
- W1969134860 cites W1970184118 @default.
- W1969134860 cites W1972166292 @default.
- W1969134860 cites W1974245712 @default.
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- W1969134860 cites W1978347146 @default.
- W1969134860 cites W1984027431 @default.
- W1969134860 cites W1992188204 @default.
- W1969134860 cites W1995128285 @default.
- W1969134860 cites W2000370160 @default.
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- W1969134860 cites W2017925455 @default.
- W1969134860 cites W2023387952 @default.
- W1969134860 cites W2024599407 @default.
- W1969134860 cites W2024661927 @default.
- W1969134860 cites W2027334426 @default.
- W1969134860 cites W2028042335 @default.
- W1969134860 cites W2028120206 @default.
- W1969134860 cites W2028492701 @default.
- W1969134860 cites W2032257722 @default.
- W1969134860 cites W2032915036 @default.
- W1969134860 cites W2040259886 @default.
- W1969134860 cites W2040823104 @default.
- W1969134860 cites W2041590030 @default.
- W1969134860 cites W2045896998 @default.
- W1969134860 cites W2046291488 @default.
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- W1969134860 cites W2091439659 @default.
- W1969134860 cites W2091898865 @default.
- W1969134860 cites W2092398413 @default.
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- W1969134860 doi "https://doi.org/10.1016/j.tet.2008.08.103" @default.
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