Matches in SemOpenAlex for { <https://semopenalex.org/work/W2319720443> ?p ?o ?g. }
Showing items 1 to 55 of
55
with 100 items per page.
- W2319720443 abstract "The stability and tautomerism of imines(1a–1c) and enamines(2a–2c) in various protic solvents(methyl alcohol, ethyl alcohol, tert-butyl alcohol, acetic acid and CF3CO2 D DMSO-d6 solution) were investigated via 1H NMR spectral data. It was found that enamines(2a–2c) were stable in above solvents and imines(1a–1c) were stable at lower temperature(≤30 °C) in weak acid solvents(ethyl alcohol, tert-butyl alcohol), but imines converted into enamines in methyl alcohol, acetic acid and CF3CO2 D DMSO-d6 solution. It was also found that along with the increase of acidity in solution, the extension of time and the temperature rising, more and more imines converse to enamines. The kinetic and thermodynamic characteristics of the conversion of imines to enamines in acetic acid were studied by taking 1a and 1b as examples. The results showed that transformation from imines(1a and 1b) to enamines(2a and 2b) is endothermic and thermodynamically feasible in the temperature range of 283–333 K(△H 0, △G 0), and the values of entropy change are positive(△S 0). The transformation follows the second-order kinetic equation at above temperatures and the proton in solution catalyzes the conversion of imines to enamines." @default.
- W2319720443 created "2016-06-24" @default.
- W2319720443 creator A5040027560 @default.
- W2319720443 date "2014-01-01" @default.
- W2319720443 modified "2023-09-27" @default.
- W2319720443 title "The stability and tautomerism of imines and enamines based on benzothiazepines in protic solvents" @default.
- W2319720443 hasPublicationYear "2014" @default.
- W2319720443 type Work @default.
- W2319720443 sameAs 2319720443 @default.
- W2319720443 citedByCount "0" @default.
- W2319720443 crossrefType "journal-article" @default.
- W2319720443 hasAuthorship W2319720443A5040027560 @default.
- W2319720443 hasConcept C111233374 @default.
- W2319720443 hasConcept C150394285 @default.
- W2319720443 hasConcept C155647269 @default.
- W2319720443 hasConcept C178790620 @default.
- W2319720443 hasConcept C185592680 @default.
- W2319720443 hasConcept C20976626 @default.
- W2319720443 hasConcept C2776673659 @default.
- W2319720443 hasConcept C2781066024 @default.
- W2319720443 hasConceptScore W2319720443C111233374 @default.
- W2319720443 hasConceptScore W2319720443C150394285 @default.
- W2319720443 hasConceptScore W2319720443C155647269 @default.
- W2319720443 hasConceptScore W2319720443C178790620 @default.
- W2319720443 hasConceptScore W2319720443C185592680 @default.
- W2319720443 hasConceptScore W2319720443C20976626 @default.
- W2319720443 hasConceptScore W2319720443C2776673659 @default.
- W2319720443 hasConceptScore W2319720443C2781066024 @default.
- W2319720443 hasLocation W23197204431 @default.
- W2319720443 hasOpenAccess W2319720443 @default.
- W2319720443 hasPrimaryLocation W23197204431 @default.
- W2319720443 hasRelatedWork W1591149400 @default.
- W2319720443 hasRelatedWork W167181664 @default.
- W2319720443 hasRelatedWork W1988992686 @default.
- W2319720443 hasRelatedWork W1992976553 @default.
- W2319720443 hasRelatedWork W2016315198 @default.
- W2319720443 hasRelatedWork W2025250091 @default.
- W2319720443 hasRelatedWork W2057721603 @default.
- W2319720443 hasRelatedWork W2074462723 @default.
- W2319720443 hasRelatedWork W2113364893 @default.
- W2319720443 hasRelatedWork W2186175736 @default.
- W2319720443 hasRelatedWork W2187825554 @default.
- W2319720443 hasRelatedWork W2322248906 @default.
- W2319720443 hasRelatedWork W2330142565 @default.
- W2319720443 hasRelatedWork W2507949111 @default.
- W2319720443 hasRelatedWork W2902374269 @default.
- W2319720443 hasRelatedWork W2949748305 @default.
- W2319720443 hasRelatedWork W2951411874 @default.
- W2319720443 hasRelatedWork W2951513715 @default.
- W2319720443 hasRelatedWork W850670098 @default.
- W2319720443 hasRelatedWork W2228785930 @default.
- W2319720443 isParatext "false" @default.
- W2319720443 isRetracted "false" @default.
- W2319720443 magId "2319720443" @default.
- W2319720443 workType "article" @default.