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Ring expansion in the coupling of Fischer-carbene complexes with 1-alkynyl-1-hydroxy cyclic compounds

Zora, Metin
Herndon, JW
Li, YH
Rossi, J
The coupling of a variety of transition metal-carbene complexes with alkynols has been studied. In many cases, the intermediate vinylcarbene complexes formed in this reaction undergo a ring expansion to afford cyclic ketone derivatives. This scope and limit of this process is explored.