Cp2ZrCl2-Catalyzed cycloalumination of acetylenic alcohols and propargylamines by Et3Al

Autor: Ilfir Ramazanov, Lilya Dzhemileva, Rita Kadikova, Usein Dzhemilev
Rok vydání: 2011
Předmět:
Zdroj: Russian Chemical Bulletin. 60:99-106
ISSN: 1573-9171
1066-5285
DOI: 10.1007/s11172-011-0013-2
Popis: The Cp2ZrCl2-catalyzed cycloalumination of acetylenic alcohols and propargylamines by Et3Al was studied. The process affords 2,3-disubstituted alumacyclopent-2-enes, which were identified by the analysis of the products of their deuterolysis and hydrolysis. The cycloalumination of alkyl- and phenyl-substituted propargylamines proceeds with high regio- and stereoselectivity to give the corresponding allylamine derivatives in high yield. Unlike the phenyl derivatives, the cycloalumination of alkyl-substituted acetylenic alcohols (propargyl, homopropargyl, and bishomopropargyl alcohols) is not regioselective.
Databáze: OpenAIRE