Matches in SemOpenAlex for { <https://semopenalex.org/work/W3927171> ?p ?o ?g. }
Showing items 1 to 72 of
72
with 100 items per page.
- W3927171 endingPage "457" @default.
- W3927171 startingPage "446" @default.
- W3927171 abstract "As early as 1922, Klason (1922) postulated the presence of carbonyl groups, in particular conjugated carbonyl groups, in coniferyl aldehyde-type structures, in spruce lignins on the basis of the chemical characteristics of lignosulfonates. Direct evidence for the presence of carbonyl groups of this type in lignins was, however, obtained only 25 years later by Adler and co-workers and by Pew (Adler et al. 1948, Adler and Ellmer 1948, Adler 1951, Pew 1951) during an investigation on the reaction mechanism of the Wiesner reaction. In this reaction, plant tissues containing lignins form a purple color when treated with phloroglucinol (4) in concentrated hydrochloric acid (Chap. 2.1.3). As shown in Fig. 7.4.1, the color is attributed to the formation of the cationic chromophore (6), a conjugate acid of the extended quinonemethide (5) produced by condensation of etherified p-hydroxycinnamaldehyde-type substructures, (1), (2), and (3), in lignins with phloroglucinol (4) (Adler et al. 1948, Adler 1951, Pew 1951). Using a procedure based on this reaction, the total content of etherified p-hydroxycinnamaldehyde-type substructures in spruce lignin was estimated to be approximately 2–3/100C9 units by UV spectroscopy (Adler and Ellmer 1948)." @default.
- W3927171 created "2016-06-24" @default.
- W3927171 creator A5000471298 @default.
- W3927171 date "1992-01-01" @default.
- W3927171 modified "2023-10-15" @default.
- W3927171 title "Determination of Carbonyl Groups" @default.
- W3927171 cites W1976565995 @default.
- W3927171 cites W1994105317 @default.
- W3927171 cites W2003622069 @default.
- W3927171 cites W2003730069 @default.
- W3927171 cites W2009862597 @default.
- W3927171 cites W2022257511 @default.
- W3927171 cites W2045264216 @default.
- W3927171 cites W2059550889 @default.
- W3927171 cites W2068507968 @default.
- W3927171 cites W2077155485 @default.
- W3927171 cites W2090320343 @default.
- W3927171 cites W2092874286 @default.
- W3927171 cites W2326894332 @default.
- W3927171 cites W4241117043 @default.
- W3927171 doi "https://doi.org/10.1007/978-3-642-74065-7_30" @default.
- W3927171 hasPublicationYear "1992" @default.
- W3927171 type Work @default.
- W3927171 sameAs 3927171 @default.
- W3927171 citedByCount "15" @default.
- W3927171 countsByYear W39271712013 @default.
- W3927171 countsByYear W39271712015 @default.
- W3927171 countsByYear W39271712016 @default.
- W3927171 countsByYear W39271712020 @default.
- W3927171 countsByYear W39271712021 @default.
- W3927171 countsByYear W39271712023 @default.
- W3927171 crossrefType "book-chapter" @default.
- W3927171 hasAuthorship W3927171A5000471298 @default.
- W3927171 hasConcept C161790260 @default.
- W3927171 hasConcept C178790620 @default.
- W3927171 hasConcept C183882617 @default.
- W3927171 hasConcept C185592680 @default.
- W3927171 hasConcept C188027245 @default.
- W3927171 hasConcept C2776538354 @default.
- W3927171 hasConcept C2778626014 @default.
- W3927171 hasConcept C2779825165 @default.
- W3927171 hasConcept C2781052789 @default.
- W3927171 hasConcept C71240020 @default.
- W3927171 hasConceptScore W3927171C161790260 @default.
- W3927171 hasConceptScore W3927171C178790620 @default.
- W3927171 hasConceptScore W3927171C183882617 @default.
- W3927171 hasConceptScore W3927171C185592680 @default.
- W3927171 hasConceptScore W3927171C188027245 @default.
- W3927171 hasConceptScore W3927171C2776538354 @default.
- W3927171 hasConceptScore W3927171C2778626014 @default.
- W3927171 hasConceptScore W3927171C2779825165 @default.
- W3927171 hasConceptScore W3927171C2781052789 @default.
- W3927171 hasConceptScore W3927171C71240020 @default.
- W3927171 hasLocation W39271711 @default.
- W3927171 hasOpenAccess W3927171 @default.
- W3927171 hasPrimaryLocation W39271711 @default.
- W3927171 hasRelatedWork W1499914130 @default.
- W3927171 hasRelatedWork W1869439268 @default.
- W3927171 hasRelatedWork W1974727999 @default.
- W3927171 hasRelatedWork W2030507274 @default.
- W3927171 hasRelatedWork W2066589590 @default.
- W3927171 hasRelatedWork W2166686366 @default.
- W3927171 hasRelatedWork W2374790073 @default.
- W3927171 hasRelatedWork W2950054227 @default.
- W3927171 hasRelatedWork W2952989232 @default.
- W3927171 hasRelatedWork W4229599758 @default.
- W3927171 isParatext "false" @default.
- W3927171 isRetracted "false" @default.
- W3927171 magId "3927171" @default.
- W3927171 workType "book-chapter" @default.