Zobrazit minimální záznam
dc.contributor.author |
Hejtmánková, Ludmila
|
|
dc.contributor.author |
Sedlák, Miloš
|
|
dc.date.accessioned |
2009-03-12T16:12:37Z |
|
dc.date.available |
2009-03-12T16:12:37Z |
|
dc.date.issued |
2006 |
|
dc.identifier |
Univerzitní knihovna (studovna) |
cze |
dc.identifier.issn |
1211-5541 |
|
dc.identifier.uri |
http://hdl.handle.net/10195/32751 |
|
dc.description.abstract |
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. |
eng |
dc.format |
p. 93-120 |
cze |
dc.language.iso |
eng |
|
dc.publisher |
Univerzita Pardubice |
cze |
dc.relation.ispartof |
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 11(2005) |
eng |
dc.rights |
open access |
eng |
dc.subject |
heterocyklické sloučeniny |
cze |
dc.subject |
transformační reakce |
cze |
dc.subject |
syntézy |
cze |
dc.title |
Recent advances in ring transformation of five-membered heterocycles |
eng |
dc.type |
article |
cze |
dc.identifier.signature |
47333 |
|
dc.peerreviewed |
yes |
eng |
dc.publicationstatus |
published |
eng |
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