Matches in SemOpenAlex for { <https://semopenalex.org/work/W2036272040> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W2036272040 endingPage "106" @default.
- W2036272040 startingPage "96" @default.
- W2036272040 abstract "Aldehyde und Ketone reagieren mit Trichlormethan im Zweiphasensystem mit 50proz. wäßrigem Natriumhydroxid unter Phasentransfer-Katalyse durch Benzyltriethylammonium-chlorid (BTEA) (1) bei tiefer Temperatur zu α-(Trichlormethyl)carbinolen 7, in Gegenwart von Dimethylsulfat zu den entsprechenden Methylethern 8. Bei 56 ± 2°C entstehen α-Hydroxy- 11, α-Chlor- 12 und α,β-ungesättigte Carbonsäuren 13, wobei die α-(Trichlormethyl)carbinole 7 als Zwischen-stufen auszuschließen sind. Als Alternativmechanismus wird die direkte Addition von Dichlor-carben an die CO-Doppelbindung zu Dichloroxiranen 5 und deren Umlagerung und Verseifung diskutiert. Reactions of Aldehydes and Ketones with the Makosza Dichlorocarbene Reagent Phase transfer-catalyzed reactions of aldehydes and ketones with trichloromethane and 50 per cent aqueous sodium hydroxide in the presence of benzyltriethylammonium chloride (BTEA) at low temperatures result in the formation of α-(trichloromethyl)carbinols 7; in the presence of dimethyl sulfate the corresponding methyl ethers 8 are obtained. At 56 ± 2°C the α-hydroxy-11, α-chloro- 12 and α,β-unsaturated carboxylic acids 13 are formed. In this reaction the α-(trichloromethyl)carbinols 7 can be excluded as intermediates. An alternative reaction mechanism for the formation of 11, 12, and 13 is discussed, which involves direct addition of dichlorocarbene to the CO double bond to form the dichlorooxiranes 5 followed by rearrangement and saponification." @default.
- W2036272040 created "2016-06-24" @default.
- W2036272040 creator A5009183259 @default.
- W2036272040 creator A5017966759 @default.
- W2036272040 date "1977-01-01" @default.
- W2036272040 modified "2023-09-26" @default.
- W2036272040 title "Zur Reaktion des <i>Makosza</i> ‐Reagens mit Aldehyden und Ketonen" @default.
- W2036272040 cites W1972471687 @default.
- W2036272040 cites W1976424313 @default.
- W2036272040 cites W1977639243 @default.
- W2036272040 cites W1984942658 @default.
- W2036272040 cites W2002564772 @default.
- W2036272040 cites W2022813049 @default.
- W2036272040 cites W2023998221 @default.
- W2036272040 cites W2038203145 @default.
- W2036272040 cites W2043049882 @default.
- W2036272040 cites W2047054363 @default.
- W2036272040 cites W2070478375 @default.
- W2036272040 cites W2076255228 @default.
- W2036272040 cites W2079865935 @default.
- W2036272040 cites W2086810704 @default.
- W2036272040 cites W2089450291 @default.
- W2036272040 cites W2091371562 @default.
- W2036272040 cites W2145722332 @default.
- W2036272040 cites W2316635312 @default.
- W2036272040 cites W2323956059 @default.
- W2036272040 cites W2327096138 @default.
- W2036272040 cites W2329343170 @default.
- W2036272040 cites W4237857367 @default.
- W2036272040 cites W4243883303 @default.
- W2036272040 cites W4382122019 @default.
- W2036272040 doi "https://doi.org/10.1002/cber.19771100111" @default.
- W2036272040 hasPublicationYear "1977" @default.
- W2036272040 type Work @default.
- W2036272040 sameAs 2036272040 @default.
- W2036272040 citedByCount "41" @default.
- W2036272040 countsByYear W20362720402012 @default.
- W2036272040 countsByYear W20362720402014 @default.
- W2036272040 countsByYear W20362720402015 @default.
- W2036272040 countsByYear W20362720402018 @default.
- W2036272040 countsByYear W20362720402021 @default.
- W2036272040 crossrefType "journal-article" @default.
- W2036272040 hasAuthorship W2036272040A5009183259 @default.
- W2036272040 hasAuthorship W2036272040A5017966759 @default.
- W2036272040 hasConcept C155647269 @default.
- W2036272040 hasConcept C161790260 @default.
- W2036272040 hasConcept C178790620 @default.
- W2036272040 hasConcept C185592680 @default.
- W2036272040 hasConcept C188027245 @default.
- W2036272040 hasConcept C2777458374 @default.
- W2036272040 hasConcept C2777738585 @default.
- W2036272040 hasConcept C2779825165 @default.
- W2036272040 hasConcept C40875361 @default.
- W2036272040 hasConcept C68381374 @default.
- W2036272040 hasConceptScore W2036272040C155647269 @default.
- W2036272040 hasConceptScore W2036272040C161790260 @default.
- W2036272040 hasConceptScore W2036272040C178790620 @default.
- W2036272040 hasConceptScore W2036272040C185592680 @default.
- W2036272040 hasConceptScore W2036272040C188027245 @default.
- W2036272040 hasConceptScore W2036272040C2777458374 @default.
- W2036272040 hasConceptScore W2036272040C2777738585 @default.
- W2036272040 hasConceptScore W2036272040C2779825165 @default.
- W2036272040 hasConceptScore W2036272040C40875361 @default.
- W2036272040 hasConceptScore W2036272040C68381374 @default.
- W2036272040 hasIssue "1" @default.
- W2036272040 hasLocation W20362720401 @default.
- W2036272040 hasOpenAccess W2036272040 @default.
- W2036272040 hasPrimaryLocation W20362720401 @default.
- W2036272040 hasRelatedWork W2003237320 @default.
- W2036272040 hasRelatedWork W2031503377 @default.
- W2036272040 hasRelatedWork W2094622799 @default.
- W2036272040 hasRelatedWork W2328763573 @default.
- W2036272040 hasRelatedWork W2943193913 @default.
- W2036272040 hasRelatedWork W2951672427 @default.
- W2036272040 hasRelatedWork W2953021960 @default.
- W2036272040 hasRelatedWork W2953155228 @default.
- W2036272040 hasRelatedWork W4210677244 @default.
- W2036272040 hasRelatedWork W2182362362 @default.
- W2036272040 hasVolume "110" @default.
- W2036272040 isParatext "false" @default.
- W2036272040 isRetracted "false" @default.
- W2036272040 magId "2036272040" @default.
- W2036272040 workType "article" @default.