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New allene synthesis via carbocupration-zinc carbenoid homologation and beta-elimination sequence
J P Varghese1, P Knochel, I Marek
1Department of Chemistry and Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Technion City, 32000 Haifa, Israel.
Organic Letters
|August 31, 2000
Abstract:
[reaction: see text] Polysubstituted propadienes are obtained in good to excellent yields by the consecutive carbocupration-homologation-beta-elimination reactions on the easily accessible alkynyl sulfoxides or sulfones. This one-pot reaction also allows the preparation of functionalized allenes.