in conditions embraced by the general term "cancer", which compounds normally exist us a keto-enol tautomeric pair, the racetalc keto form of which is rapresented by formula (Ia), wherein R is a hydrogen, lower alkyl, acyl, or another functional group of up to 6 carbons including at ...
Question: Tell if the given pair of compounds are keto-enol tautomers or constitutional isomers, but not tautomers. Keto-Enol Tautomerism: For the existence of keto-enol tautomerism it is crucial that the one and the same carbon comprises of double bond an...
In order to study the effect of substituents on the preferential keto/enol forms of six mono-substituted 2-OH-pyridines, the energies corresponding to their DFT-optimized structures for both tautomeric forms were compared. To obtain an idea of how solvent dielectric effects affect such a tautomeric...
Base hydrolysis of these vinyl benzoates gave the corresponding 2-(heterocyclic)-1-phenylethenols, which exist in both keto and enol tautomeric forms. These tautomers were used as starting materials for the syntheses of fused-ring heterocycles. The reactivity of the keto鈥揺nol tautomers depends...
in conditions embraced by the general term "cancer", which compounds normally exist us a keto-enol tautomeric pair, the racetalc keto form of which is rapresented by formula (Ia), wherein R is a hydrogen, lower alkyl, acyl, or another functional group of up to 6 carbons including at ...
The keto‐enol tautomeric equilibrium of acetylacetone in trifluoromethane were studied at 300±0.5 K (1 K above the critical temperature) from 130 kg m−3to 800 kg m−3by using FT–NMR. No anomalous behavior near the critical point has been found within the experimental error. The...
Dep.AKAODep.Y.Dep.YOSHIMURADep.John Wiley & Sons, Ltd.ChemInformAkao, K., and Y. Yoshimura, "Keto-enol Tautomeric Equilibrium of Acetylacetone in Trifluoromethane near the Critical Temperature," J . Chem. Phys., 94, 5243 (1991).
effectsKeto-EnoltautomerismN-acetoacetylpyrroleIntroduction Organic compounds usually have labile bonds. It is well known that thousands of reactions are carried out in solutions, only a few in the gas-phase. Most chemists are now familiar with the fact that solvent may have a strong influence on...
The solvent effects on the keto-enol tautomeric equilibriums of ethyl acetoacetate (EAA) and tetronic acid (TA) are theoretically investigated. The present study shows that the most stable keto tautomer of EAA corresponds to the trans diketo, E, Z form; while the most stable enol tautomer ...
in conditions embraced by the general term "cancer", which compounds normally exist us a keto-enol tautomeric pair, the racetalc keto form of which is rapresented by formula (Ia), wherein R is a hydrogen, lower alkyl, acyl, or another functional group of up to 6 carbons including at ...