Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023199199> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2023199199 endingPage "357" @default.
- W2023199199 startingPage "357" @default.
- W2023199199 abstract "The 13C n.m.r. spectra of a series of 5-, 6-, and 2-substituted quinoxalines have been analysed by consideration of their 1H-coupled spectra. Typical values of the coupling constants are: C(2,3),1JCH 181.9,2JCH 11.4; C(5,8), 1JCH 162.6, 3JCH 6.5, C(6,7), 1JCH 159.4, 3JCH 9.1; C(9), 3JCH(2)=3JCH(7)= 10.0, 3JCH(5) 5.4; C(10), 3JCH(3)=3JCH(6)= 10.0, 3JCH(8) 5.4 Hz. The magnitudes of the coupling constants in the benzenoid ring [C(5)–C(10)] are similar to these for the corresponding positions in naphthalene, but application of naphthalene chemical shift substitutions effects leads in some cases to the wrong peak sequence in the related quinoxalines. Within the quinoxaline series itself, however, acceptable additivity of substituent effects is found (±0.8 p.p.m.), provided that the reference compounds are carefully chosen. Analysis of mixtures of quinoxalines from substituted o-phenylenediamines and α-oxo-aldehydes is possible by consideration of the multiplicity of the ring-junction quaternary carbon signals in the fully coupled spectra." @default.
- W2023199199 created "2016-06-24" @default.
- W2023199199 creator A5060898366 @default.
- W2023199199 date "1982-01-01" @default.
- W2023199199 modified "2023-09-26" @default.
- W2023199199 title "13C nuclear magnetic resonance spectra of quinoxaline derivatives" @default.
- W2023199199 doi "https://doi.org/10.1039/p19820000357" @default.
- W2023199199 hasPublicationYear "1982" @default.
- W2023199199 type Work @default.
- W2023199199 sameAs 2023199199 @default.
- W2023199199 citedByCount "26" @default.
- W2023199199 countsByYear W20231991992015 @default.
- W2023199199 crossrefType "journal-article" @default.
- W2023199199 hasAuthorship W2023199199A5060898366 @default.
- W2023199199 hasConcept C109214941 @default.
- W2023199199 hasConcept C111429119 @default.
- W2023199199 hasConcept C121332964 @default.
- W2023199199 hasConcept C125047889 @default.
- W2023199199 hasConcept C1276947 @default.
- W2023199199 hasConcept C134306372 @default.
- W2023199199 hasConcept C147597530 @default.
- W2023199199 hasConcept C147789679 @default.
- W2023199199 hasConcept C156004811 @default.
- W2023199199 hasConcept C178790620 @default.
- W2023199199 hasConcept C183276030 @default.
- W2023199199 hasConcept C185592680 @default.
- W2023199199 hasConcept C2778689049 @default.
- W2023199199 hasConcept C2779255514 @default.
- W2023199199 hasConcept C2780362310 @default.
- W2023199199 hasConcept C2780378348 @default.
- W2023199199 hasConcept C33923547 @default.
- W2023199199 hasConcept C46141821 @default.
- W2023199199 hasConcept C4839761 @default.
- W2023199199 hasConcept C62520636 @default.
- W2023199199 hasConcept C71240020 @default.
- W2023199199 hasConceptScore W2023199199C109214941 @default.
- W2023199199 hasConceptScore W2023199199C111429119 @default.
- W2023199199 hasConceptScore W2023199199C121332964 @default.
- W2023199199 hasConceptScore W2023199199C125047889 @default.
- W2023199199 hasConceptScore W2023199199C1276947 @default.
- W2023199199 hasConceptScore W2023199199C134306372 @default.
- W2023199199 hasConceptScore W2023199199C147597530 @default.
- W2023199199 hasConceptScore W2023199199C147789679 @default.
- W2023199199 hasConceptScore W2023199199C156004811 @default.
- W2023199199 hasConceptScore W2023199199C178790620 @default.
- W2023199199 hasConceptScore W2023199199C183276030 @default.
- W2023199199 hasConceptScore W2023199199C185592680 @default.
- W2023199199 hasConceptScore W2023199199C2778689049 @default.
- W2023199199 hasConceptScore W2023199199C2779255514 @default.
- W2023199199 hasConceptScore W2023199199C2780362310 @default.
- W2023199199 hasConceptScore W2023199199C2780378348 @default.
- W2023199199 hasConceptScore W2023199199C33923547 @default.
- W2023199199 hasConceptScore W2023199199C46141821 @default.
- W2023199199 hasConceptScore W2023199199C4839761 @default.
- W2023199199 hasConceptScore W2023199199C62520636 @default.
- W2023199199 hasConceptScore W2023199199C71240020 @default.
- W2023199199 hasLocation W20231991991 @default.
- W2023199199 hasOpenAccess W2023199199 @default.
- W2023199199 hasPrimaryLocation W20231991991 @default.
- W2023199199 hasRelatedWork W1520554170 @default.
- W2023199199 hasRelatedWork W1975022871 @default.
- W2023199199 hasRelatedWork W1976414231 @default.
- W2023199199 hasRelatedWork W2021591181 @default.
- W2023199199 hasRelatedWork W2036830573 @default.
- W2023199199 hasRelatedWork W2070540150 @default.
- W2023199199 hasRelatedWork W2127944850 @default.
- W2023199199 hasRelatedWork W2127959664 @default.
- W2023199199 hasRelatedWork W2401333456 @default.
- W2023199199 hasRelatedWork W2949416756 @default.
- W2023199199 isParatext "false" @default.
- W2023199199 isRetracted "false" @default.
- W2023199199 magId "2023199199" @default.
- W2023199199 workType "article" @default.