Witryna24 paź 1995 · Abstract Imidates derived from α-amino esters as potential azomethine ylides, undergo 1,3-dipolar cycloaddition with imino-alcohols, in tautomeric equilibrium with 1,3-oxazolidines, without solvent at 70°C or under microwave irradiation. This reaction leads to a wide range of novel polyfunctionalized 4-yliden-2-imidazolin-5 … WitrynaDownload scientific diagram Tautomers of cytosine. In a) the keto form, in b) the enol form and in c) the imino form. from publication: A singlet and triplet excited-state …
The application of the Hammett equation to the theory of tautomeric …
Witryna17 sie 2015 · The calculations, in gas phase and in water, are performed at B3LYP/6-311++G(d,p) level. In gas phase, it is observed that any tautomeric form of investigated mismatches is more stabilized when adenine is protonated. As for the neutral mismatches, the mismatches containing amino form of cytosine and imino form of … WitrynaArwa W. El-Harby is an academic researcher. The author has contributed to research in topic(s): Tautomer & Substituent. The author has an hindex of 2, co-authored 2 publication(s) receiving 25 citation(s). make it and freeze it meals
Amino−Imino Tautomerism in Derivatives of Cytosine: Effect on …
Witryna28 lip 2014 · Schematic presentation of KP1212's mutagenic effect on viruses. (A) KP1212 exists as an array of different tautomeric forms, whereas cytosine almost exclusively exists as one form, the canonical keto-amino tautomer.(B) The deoxynucleotide analog of KP1212 is incorporated by viral polymerases, causing G-to … WitrynaThe preferred tautomeric forms of adenine and cytosine are the amino configurations, however, ... With low probability these bases can tautomerize into the imino form; if … WitrynaThe amino–imino tautomerism of mono- and diaminothiazoles in the gas, water and CCl 4 phases was investigated using the B3LYP and MP2(full) levels with the 6-311++G(d,p) basis set. The MP2 method predicted accurately the geometrical parameters of the compounds studied and showed that the amino forms predominate in solution as well … make it and bake it decorative bowls