Matches in SemOpenAlex for { <https://semopenalex.org/work/W1986688886> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W1986688886 endingPage "499" @default.
- W1986688886 startingPage "499" @default.
- W1986688886 abstract "Oxidation of buta-1,3-diene, isoprene, and 2,3-dimethylbuta-1,3-diene with tellurium(IV) oxide and lithium bromide in acetic acid affords an isomeric mixture of the corresponding diacetoxyalkenes (1,2- and 1,4-addition products). The product yield and selectivity for 1,4-isomers are high [up to 61%(based on TeO2) and 1,4-/l,2-= 90/l0 respectively in the case of buta-1,3-diene] when an excess of LiBr is employed (LiBr/TeO2= 5–10). The reaction also proceeds in the presence of NaBr, KBr, LiCl, HBr, or I2, in the place of LiBr, but both the selectivity for 1,4-isomers and the product yield are lower. The reaction hardly occurs using LiF, Lil, NaCl, Br2 and NH4Br as a halogen source. The reaction proceeds catalytically with respect to TeO2 to some extent when a re-oxidant such as H2O2 or t-BuOOH is used. In the cases of 2,5-dimethylhexa-2,4-diene, cyclopenta-1,3-diene, cyclohexa-1,3-diene, and cyclo-octa-1,3-diene the results are unsatisfactory in either the product yield or the selectivity for 1,4-isomers. Halogeno- and/or acetoxy-telluriation of a diene followed by acetolysis of the produced C–X (X = halogen) and C–Te bonds are proposed as one of the possible reaction pathways." @default.
- W1986688886 created "2016-06-24" @default.
- W1986688886 creator A5001530888 @default.
- W1986688886 creator A5023081932 @default.
- W1986688886 creator A5025382574 @default.
- W1986688886 creator A5037982236 @default.
- W1986688886 date "1985-01-01" @default.
- W1986688886 modified "2023-10-11" @default.
- W1986688886 title "Liquid-phase 1,4-diacetoxylation of conjugated dienes with tellurium(IV) oxide and alkali metal halides" @default.
- W1986688886 doi "https://doi.org/10.1039/p19850000499" @default.
- W1986688886 hasPublicationYear "1985" @default.
- W1986688886 type Work @default.
- W1986688886 sameAs 1986688886 @default.
- W1986688886 citedByCount "8" @default.
- W1986688886 crossrefType "journal-article" @default.
- W1986688886 hasAuthorship W1986688886A5001530888 @default.
- W1986688886 hasAuthorship W1986688886A5023081932 @default.
- W1986688886 hasAuthorship W1986688886A5025382574 @default.
- W1986688886 hasAuthorship W1986688886A5037982236 @default.
- W1986688886 hasConcept C118792377 @default.
- W1986688886 hasConcept C134121241 @default.
- W1986688886 hasConcept C155647269 @default.
- W1986688886 hasConcept C161790260 @default.
- W1986688886 hasConcept C171560689 @default.
- W1986688886 hasConcept C176933379 @default.
- W1986688886 hasConcept C178790620 @default.
- W1986688886 hasConcept C179104552 @default.
- W1986688886 hasConcept C185592680 @default.
- W1986688886 hasConcept C191897082 @default.
- W1986688886 hasConcept C192562407 @default.
- W1986688886 hasConcept C198091228 @default.
- W1986688886 hasConcept C2776300020 @default.
- W1986688886 hasConcept C2776673659 @default.
- W1986688886 hasConcept C2778733088 @default.
- W1986688886 hasConcept C2780263894 @default.
- W1986688886 hasConcept C2781312896 @default.
- W1986688886 hasConcept C46062151 @default.
- W1986688886 hasConcept C517835270 @default.
- W1986688886 hasConcept C537181965 @default.
- W1986688886 hasConceptScore W1986688886C118792377 @default.
- W1986688886 hasConceptScore W1986688886C134121241 @default.
- W1986688886 hasConceptScore W1986688886C155647269 @default.
- W1986688886 hasConceptScore W1986688886C161790260 @default.
- W1986688886 hasConceptScore W1986688886C171560689 @default.
- W1986688886 hasConceptScore W1986688886C176933379 @default.
- W1986688886 hasConceptScore W1986688886C178790620 @default.
- W1986688886 hasConceptScore W1986688886C179104552 @default.
- W1986688886 hasConceptScore W1986688886C185592680 @default.
- W1986688886 hasConceptScore W1986688886C191897082 @default.
- W1986688886 hasConceptScore W1986688886C192562407 @default.
- W1986688886 hasConceptScore W1986688886C198091228 @default.
- W1986688886 hasConceptScore W1986688886C2776300020 @default.
- W1986688886 hasConceptScore W1986688886C2776673659 @default.
- W1986688886 hasConceptScore W1986688886C2778733088 @default.
- W1986688886 hasConceptScore W1986688886C2780263894 @default.
- W1986688886 hasConceptScore W1986688886C2781312896 @default.
- W1986688886 hasConceptScore W1986688886C46062151 @default.
- W1986688886 hasConceptScore W1986688886C517835270 @default.
- W1986688886 hasConceptScore W1986688886C537181965 @default.
- W1986688886 hasLocation W19866888861 @default.
- W1986688886 hasOpenAccess W1986688886 @default.
- W1986688886 hasPrimaryLocation W19866888861 @default.
- W1986688886 hasRelatedWork W1985992829 @default.
- W1986688886 hasRelatedWork W2000358835 @default.
- W1986688886 hasRelatedWork W2068828472 @default.
- W1986688886 hasRelatedWork W2070788373 @default.
- W1986688886 hasRelatedWork W2072221398 @default.
- W1986688886 hasRelatedWork W2166817866 @default.
- W1986688886 hasRelatedWork W2315795078 @default.
- W1986688886 hasRelatedWork W2330748441 @default.
- W1986688886 hasRelatedWork W2332777419 @default.
- W1986688886 hasRelatedWork W2486726644 @default.
- W1986688886 isParatext "false" @default.
- W1986688886 isRetracted "false" @default.
- W1986688886 magId "1986688886" @default.
- W1986688886 workType "article" @default.