Matches in SemOpenAlex for { <https://semopenalex.org/work/W1983893013> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W1983893013 endingPage "69" @default.
- W1983893013 startingPage "67" @default.
- W1983893013 abstract "Aqueous-phase equilibrium acidity constants have been determined for urazole (1,2,4-triazolidine-3,5-dione), several substituted urazoles and other selected imides. Aqueous phase pKa values for urazole (5.8), 1-methylurazole (5.3), 4-methylurazole (5.7) and 1,4-dimethylurazole (5.3) indicate that (in water) the methyl group acidifies the urazole moiety when bonded to N-1 but has little effect on acidity when bonded to N-4. Aqueous phase pKa values for hydantoin (9.0) and 1-methylhydantoin (9.1) suggest that a 1-methyl substituent has little effect on the acidity of the imide proton present in hydantoin. These data, combined with aqueous phase pKa values for 1,2-dimethylurazole (7.5), a substituted urazole lacking amide protons, indicate that an amide proton in urazole (i.e. the proton bound to either N-1 or N-2 in urazole) is ca 1.5 pKa units more acidic than the imide proton (i.e. the proton bound to N-4). Changes in 13C NMR chemical shifts for the carbonyl carbon atoms present in variously substituted D2O phase urazoles, hydantoins, succinimide and their conjugate bases also confirm that amide NH bonds found in urazole and 1-methylurazole are weaker, in a heterolytic acid—base sense, than imide NH bonds." @default.
- W1983893013 created "2016-06-24" @default.
- W1983893013 creator A5002560985 @default.
- W1983893013 creator A5026858936 @default.
- W1983893013 creator A5048304423 @default.
- W1983893013 creator A5088461004 @default.
- W1983893013 date "1991-01-01" @default.
- W1983893013 modified "2023-10-14" @default.
- W1983893013 title "Potentiometric and spectroscopic investigations of the aqueous phase acid-base chemistry of urazoles and substituted urazoles" @default.
- W1983893013 cites W2070245289 @default.
- W1983893013 cites W2091991697 @default.
- W1983893013 cites W2155604981 @default.
- W1983893013 cites W2316564858 @default.
- W1983893013 cites W2492101850 @default.
- W1983893013 doi "https://doi.org/10.1002/poc.610040111" @default.
- W1983893013 hasPublicationYear "1991" @default.
- W1983893013 type Work @default.
- W1983893013 sameAs 1983893013 @default.
- W1983893013 citedByCount "13" @default.
- W1983893013 countsByYear W19838930132016 @default.
- W1983893013 crossrefType "journal-article" @default.
- W1983893013 hasAuthorship W1983893013A5002560985 @default.
- W1983893013 hasAuthorship W1983893013A5026858936 @default.
- W1983893013 hasAuthorship W1983893013A5048304423 @default.
- W1983893013 hasAuthorship W1983893013A5088461004 @default.
- W1983893013 hasConcept C155647269 @default.
- W1983893013 hasConcept C178790620 @default.
- W1983893013 hasConcept C184651966 @default.
- W1983893013 hasConcept C185592680 @default.
- W1983893013 hasConcept C2776568683 @default.
- W1983893013 hasConcept C2776830054 @default.
- W1983893013 hasConcept C2777604212 @default.
- W1983893013 hasConcept C2778439535 @default.
- W1983893013 hasConcept C2778689049 @default.
- W1983893013 hasConcept C2778743342 @default.
- W1983893013 hasConcept C32909587 @default.
- W1983893013 hasConcept C71240020 @default.
- W1983893013 hasConceptScore W1983893013C155647269 @default.
- W1983893013 hasConceptScore W1983893013C178790620 @default.
- W1983893013 hasConceptScore W1983893013C184651966 @default.
- W1983893013 hasConceptScore W1983893013C185592680 @default.
- W1983893013 hasConceptScore W1983893013C2776568683 @default.
- W1983893013 hasConceptScore W1983893013C2776830054 @default.
- W1983893013 hasConceptScore W1983893013C2777604212 @default.
- W1983893013 hasConceptScore W1983893013C2778439535 @default.
- W1983893013 hasConceptScore W1983893013C2778689049 @default.
- W1983893013 hasConceptScore W1983893013C2778743342 @default.
- W1983893013 hasConceptScore W1983893013C32909587 @default.
- W1983893013 hasConceptScore W1983893013C71240020 @default.
- W1983893013 hasIssue "1" @default.
- W1983893013 hasLocation W19838930131 @default.
- W1983893013 hasOpenAccess W1983893013 @default.
- W1983893013 hasPrimaryLocation W19838930131 @default.
- W1983893013 hasRelatedWork W1967211672 @default.
- W1983893013 hasRelatedWork W1996369230 @default.
- W1983893013 hasRelatedWork W2033334763 @default.
- W1983893013 hasRelatedWork W2036273182 @default.
- W1983893013 hasRelatedWork W2063910665 @default.
- W1983893013 hasRelatedWork W2101686678 @default.
- W1983893013 hasRelatedWork W2513353724 @default.
- W1983893013 hasRelatedWork W3004999929 @default.
- W1983893013 hasRelatedWork W4232089198 @default.
- W1983893013 hasRelatedWork W4285448475 @default.
- W1983893013 hasVolume "4" @default.
- W1983893013 isParatext "false" @default.
- W1983893013 isRetracted "false" @default.
- W1983893013 magId "1983893013" @default.
- W1983893013 workType "article" @default.