Matches in SemOpenAlex for { <https://semopenalex.org/work/W8675803> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W8675803 abstract "The work described in this thesis is concerned with three areas relating to nueleophilic reactions of novel-polyfluorinated alkenes-. a) Very highly strained fluorinated epoxides have been synthesised from bicyclic internal alkenes using Ca(OCl)(_2). These molecules display an almost unprecedented therira.1 and chemical stability. b) Aromatic bifunctional nucleophiles have been reacted with a variety of perfluorinated alkenes and cycloalkenes to give high yielding heterocyclic compounds. These are discussed within a mechanistic framework which my rationalise the product structures. c) Additions of fluoride ion from CsF and TAS-F to fluorinated alkenes in a suitable solvent are shown to yield long-lived fluorocarbanions. N.m.r. observations indicate the systems are whollyin the form of the respective anions and are essentially static on then.m.r. timescale. Competition experiments for a deficiency of CsF are available and can render useful infornmtion on F(^-) affinities. The (^13) and (^19)F n.m.r. spectra of the anions display unusual chemical shift and coupling constant phenomena. The n.m.r. spectra are unchanged over a wide temperature range but at a distinct threshold temperature line broadening occurs. This is indicative of the onset of F exchange on the n.m.r. timescale, is specific to the M(^+)C(^-) system and. therefore, is a guide to the carbanion stabilities. High yielding trapping reactions with simple electrophiles are described but, in some cases F(^-) donation from the carbanion is preferred. This competing reaction is found for particular electrophiles and above the threshold exchange temperature as determined by n.m.r." @default.
- W8675803 created "2016-06-24" @default.
- W8675803 creator A5029380893 @default.
- W8675803 date "1986-01-01" @default.
- W8675803 modified "2023-09-27" @default.
- W8675803 title "Chemistry of novel fluorinated alkenes" @default.
- W8675803 hasPublicationYear "1986" @default.
- W8675803 type Work @default.
- W8675803 sameAs 8675803 @default.
- W8675803 citedByCount "0" @default.
- W8675803 crossrefType "dissertation" @default.
- W8675803 hasAuthorship W8675803A5029380893 @default.
- W8675803 hasConcept C142724271 @default.
- W8675803 hasConcept C147597530 @default.
- W8675803 hasConcept C155647269 @default.
- W8675803 hasConcept C161790260 @default.
- W8675803 hasConcept C178790620 @default.
- W8675803 hasConcept C178907741 @default.
- W8675803 hasConcept C185592680 @default.
- W8675803 hasConcept C204787440 @default.
- W8675803 hasConcept C24961977 @default.
- W8675803 hasConcept C2776910235 @default.
- W8675803 hasConcept C2780443040 @default.
- W8675803 hasConcept C2780471494 @default.
- W8675803 hasConcept C50027330 @default.
- W8675803 hasConcept C71924100 @default.
- W8675803 hasConcept C82894169 @default.
- W8675803 hasConceptScore W8675803C142724271 @default.
- W8675803 hasConceptScore W8675803C147597530 @default.
- W8675803 hasConceptScore W8675803C155647269 @default.
- W8675803 hasConceptScore W8675803C161790260 @default.
- W8675803 hasConceptScore W8675803C178790620 @default.
- W8675803 hasConceptScore W8675803C178907741 @default.
- W8675803 hasConceptScore W8675803C185592680 @default.
- W8675803 hasConceptScore W8675803C204787440 @default.
- W8675803 hasConceptScore W8675803C24961977 @default.
- W8675803 hasConceptScore W8675803C2776910235 @default.
- W8675803 hasConceptScore W8675803C2780443040 @default.
- W8675803 hasConceptScore W8675803C2780471494 @default.
- W8675803 hasConceptScore W8675803C50027330 @default.
- W8675803 hasConceptScore W8675803C71924100 @default.
- W8675803 hasConceptScore W8675803C82894169 @default.
- W8675803 hasLocation W86758031 @default.
- W8675803 hasOpenAccess W8675803 @default.
- W8675803 hasPrimaryLocation W86758031 @default.
- W8675803 hasRelatedWork W191981962 @default.
- W8675803 hasRelatedWork W1986780480 @default.
- W8675803 hasRelatedWork W2001988008 @default.
- W8675803 hasRelatedWork W2014386909 @default.
- W8675803 hasRelatedWork W2017714884 @default.
- W8675803 hasRelatedWork W2021884897 @default.
- W8675803 hasRelatedWork W2041726370 @default.
- W8675803 hasRelatedWork W2072039124 @default.
- W8675803 hasRelatedWork W2121765510 @default.
- W8675803 hasRelatedWork W2132574712 @default.
- W8675803 hasRelatedWork W2188386759 @default.
- W8675803 hasRelatedWork W2255525733 @default.
- W8675803 hasRelatedWork W2469136497 @default.
- W8675803 hasRelatedWork W2559122791 @default.
- W8675803 hasRelatedWork W2883761776 @default.
- W8675803 hasRelatedWork W2952857708 @default.
- W8675803 hasRelatedWork W3117275386 @default.
- W8675803 hasRelatedWork W3139007310 @default.
- W8675803 hasRelatedWork W61344304 @default.
- W8675803 hasRelatedWork W257730225 @default.
- W8675803 isParatext "false" @default.
- W8675803 isRetracted "false" @default.
- W8675803 magId "8675803" @default.
- W8675803 workType "dissertation" @default.