The 'cesium effect': Syntheses of medio- and macrocyclic compounds

Autor:	Fritz Vögtle, Erich Koepp, Andreas Ostrowicki
Rok vydání:	1992
Předmět:	chemistry.chemical_classification chemistry.chemical_compound chemistry Caesium Potassium Special effects chemistry.chemical_element Organic chemistry Organic synthesis Ring (chemistry) Crown ether Cyclophane
Zdroj:	Topics in Current Chemistry ISBN: 9783540543480
DOI:	10.1007/3-540-54348-1_7
Popis:	This overview highlights the application of the “cesium effect” in synthetic reactions. Special attention is drawn to macrocyclizations. More recent examples published between 1983 and 1990 are selected critically. In a short introduction cesium salts which are usually applied in organic chemistry are introduced, followed by many concrete examples of the use of cesium salts in ring closure reactions leading to macro- and oligomacrocyclic compounds. It is shown that by using cesium salts instead of the corresponding sodium and potassium compounds in ring closure reactions yields can often be dramatically increased. The review is concluded with attempts to explain the special effects of cesium salts in organic synthesis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2a68c5232274e9be51d51aef9d2578a6 https://doi.org/10.1007/3-540-54348-1_7 Zobrazit plný text záznamu