Stereochemical aspects of intramolecular palladium catalysed [3+2] cycloadditions of methylenecyclopropanes

Autor: Michael Stepp, Alexandra M. Z. Slawin, Hervé Corlay, Andrew M. K. Pennell, David J. Williams, Michael Shipman, William B. Motherwell, Paul Binger
Rok vydání: 1996
Předmět:
Zdroj: Tetrahedron. 52:4883-4902
ISSN: 0040-4020
DOI: 10.1016/0040-4020(96)00160-3
Popis: The preparation and intramolecular palladium catalysed [3+2] cycloaddition reactions of a range of substrates containing either stereochemically defined 2,3-disubstituted methylenecyclopropanes 3 or acrylate accepters 12-15 are described. Evidence is presented which supports the hypothesis that these cycloaddition reactions proceed via palladium-trimethylenemethane type intermediates and that the two carbon-carbon bonds are formed in a highly asynchronous manner.
Databáze: OpenAIRE