Recent advances in ring transformation of five-membered heterocycles
ČlánekOtevřený přístuppeer-reviewedpublishedDatum publikování
2006
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Univerzita Pardubice
Abstrakt
Ring transformations of heterocyclic rings by temporary opening and subsequent closure to a new molecule are of particular interest both synthetically and theoretically. Only rearrangement of five-membered heterocycles are discussed and reviewed. These transformations are classified into four groups: (a) "classical ring transformations", where the starting and resulting ring system is of the same size, but the heteroatoms and/or their positions have been changed: (b) "degenerate ring transformations" where during the course of the transformation the starting compound and product have the same ring system, but the reaction proceeds by a ring opening and subsequent ring closure process: (c) "ring contractions" and "ring expansions" where the sizes of the product rings are smaller or larger, respectively, than those of the starting compound, and (d) "pseudo ring transformations" or "ring-chain transfer", where the process is formally a ring transformation, but is realised by a ring closure of a side chain of the starting heterocycle and opening of the orirignal ring. Reaction mechanism of the most interesting ring transformations are also discussed.
Rozsah stran
p. 93-120
ISSN
1211-5541
Trvalý odkaz na tento záznam
Projekt
Zdrojový dokument
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 11(2005)
Vydavatelská verze
Přístup k e-verzi
open access
Název akce
ISBN
Studijní obor
Studijní program
Signatura tištěné verze
47333
Umístění tištěné verze
Univerzitní knihovna (studovna)
Přístup k tištěné verzi
Klíčová slova
heterocyklické sloučeniny, transformační reakce, syntézy