Gold(I)-Catalyzed Intramolecular Cyclopropanation of Dienynes

Autor:	Antonio M. Echavarren, Cristina Nieto-Oberhuber, Eloisa Jimenez‐Nunez, Diego J. Cárdenas, Salomé López, M. Paz Muñoz, Elena Buñuel
Rok vydání:	2006
Předmět:	Cyclopropanation Organic Chemistry chemistry.chemical_element General Medicine General Chemistry Zinc Medicinal chemistry Catalysis Metal chemistry visual_art Intramolecular force visual_art.visual_art_medium Organic chemistry Platinum
Zdroj:	Chemistry - A European Journal. 12:1694-1702
ISSN:	1521-3765 0947-6539
Popis:	Gold(I) complexes are the most active catalysts for the biscyclopropanation of dienynes to form tetracyclic compounds. PtII and ZnII are also able to promote the biscyclopropanation, although less efficiently. The configurations obtained in all cases with the use of gold(I) catalysts can be explained by the pathway proceeding through anti cyclopropyl gold carbenes. Similar intermediates are most probably involved in reactions catalyzed by RuII and PtII. Two different cyclopropanation pathways have been found; they depend on the structures of the cyclopropyl gold carbenes (anti or syn) and the relative arrangements of the metal carbenes and the alkenes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66cfd80982c07f32687ef3422bfa172f https://doi.org/10.1002/chem.200501089 Zobrazit plný text záznamu Plný text