Matches in SemOpenAlex for { <https://semopenalex.org/work/W2072716805> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2072716805 endingPage "449" @default.
- W2072716805 startingPage "440" @default.
- W2072716805 abstract "4-Vinylpyridine (1a) combines with 3 moles of dienophilic N-alkyl-maleinimides (2) in the presence of polymerization inhibitors. The first step of the reaction probably consists of 1:1-addition with participation of an aromatic double bond, comparable to the analogous behavior of styrene and its derivatives under similar conditions. The unstable intermediates 3, like other Schiff bases (imines), add 2 further moles of the N-alkyl-maleinimides forming the spiro compounds 4. These are split in an acidic medium into the N-alkyl-5,6,7,8-tetrahydroisoquinoline-7,8-dicarboximides (5), and N,N′-dialkyl-2-butene-1,2,3,4-tetracarboxylic 1,2,:3,4-diimides (6). LiAlH4 reduction of these two types of compounds leads to N-alkyl-1 H-(3,4-d)-pyrrolo-2,3,3a,4,5,9b-hexahydroisoquinolines (7) and to N,N′dialkyl-3,3′-bipyrrolidyls (8A) and their dehydro-products 8B, respectively. From the reaction of 2-vinylpyridine (1b) with N-alkyl-maleinimides (2) the 1:2-addition products 9 can be isolated in the presence of polymerization inhibitors, which are derivatives of N-alkyl-5,6,7,8-tetrahydroquinoline-5,6-dicarboximides (9). This again corresponds to the reaction type of cycloadditions with styrene. Furthermore 1:3 adducts are formed which according to 1H- and 13C-NMR.-data most likely have the structure 10, representing a new type of cycloaddition involving the pyridine nitrogen." @default.
- W2072716805 created "2016-06-24" @default.
- W2072716805 creator A5002765055 @default.
- W2072716805 creator A5011151064 @default.
- W2072716805 creator A5065574589 @default.
- W2072716805 date "1973-01-31" @default.
- W2072716805 modified "2023-09-23" @default.
- W2072716805 title "Neuartige Cycloadditionsreaktionen von 2- und 4-Vinylpyridin mit N-Alkyl-maleinimiden" @default.
- W2072716805 cites W1984661527 @default.
- W2072716805 cites W1985350140 @default.
- W2072716805 cites W2008884911 @default.
- W2072716805 cites W2045028461 @default.
- W2072716805 cites W2062485942 @default.
- W2072716805 cites W2066132924 @default.
- W2072716805 cites W2075438448 @default.
- W2072716805 cites W2108614218 @default.
- W2072716805 cites W2116968876 @default.
- W2072716805 doi "https://doi.org/10.1002/hlca.19730560134" @default.
- W2072716805 hasPublicationYear "1973" @default.
- W2072716805 type Work @default.
- W2072716805 sameAs 2072716805 @default.
- W2072716805 citedByCount "7" @default.
- W2072716805 crossrefType "journal-article" @default.
- W2072716805 hasAuthorship W2072716805A5002765055 @default.
- W2072716805 hasAuthorship W2072716805A5011151064 @default.
- W2072716805 hasAuthorship W2072716805A5065574589 @default.
- W2072716805 hasConcept C108204754 @default.
- W2072716805 hasConcept C155647269 @default.
- W2072716805 hasConcept C15920480 @default.
- W2072716805 hasConcept C178790620 @default.
- W2072716805 hasConcept C185592680 @default.
- W2072716805 hasConcept C188027245 @default.
- W2072716805 hasConcept C2777566558 @default.
- W2072716805 hasConcept C2779485729 @default.
- W2072716805 hasConcept C2780263894 @default.
- W2072716805 hasConcept C44228677 @default.
- W2072716805 hasConcept C521977710 @default.
- W2072716805 hasConcept C71240020 @default.
- W2072716805 hasConceptScore W2072716805C108204754 @default.
- W2072716805 hasConceptScore W2072716805C155647269 @default.
- W2072716805 hasConceptScore W2072716805C15920480 @default.
- W2072716805 hasConceptScore W2072716805C178790620 @default.
- W2072716805 hasConceptScore W2072716805C185592680 @default.
- W2072716805 hasConceptScore W2072716805C188027245 @default.
- W2072716805 hasConceptScore W2072716805C2777566558 @default.
- W2072716805 hasConceptScore W2072716805C2779485729 @default.
- W2072716805 hasConceptScore W2072716805C2780263894 @default.
- W2072716805 hasConceptScore W2072716805C44228677 @default.
- W2072716805 hasConceptScore W2072716805C521977710 @default.
- W2072716805 hasConceptScore W2072716805C71240020 @default.
- W2072716805 hasIssue "1" @default.
- W2072716805 hasLocation W20727168051 @default.
- W2072716805 hasOpenAccess W2072716805 @default.
- W2072716805 hasPrimaryLocation W20727168051 @default.
- W2072716805 hasRelatedWork W1971795656 @default.
- W2072716805 hasRelatedWork W2024404458 @default.
- W2072716805 hasRelatedWork W2026948689 @default.
- W2072716805 hasRelatedWork W2070466230 @default.
- W2072716805 hasRelatedWork W2118844951 @default.
- W2072716805 hasRelatedWork W2161750263 @default.
- W2072716805 hasRelatedWork W2163634197 @default.
- W2072716805 hasRelatedWork W2324898221 @default.
- W2072716805 hasRelatedWork W2358163852 @default.
- W2072716805 hasRelatedWork W3138097269 @default.
- W2072716805 hasVolume "56" @default.
- W2072716805 isParatext "false" @default.
- W2072716805 isRetracted "false" @default.
- W2072716805 magId "2072716805" @default.
- W2072716805 workType "article" @default.