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ChemInform Abstract: Carbon Nucleophile Addition to sp2-Unsaturated Fischer Carbene Complexes

✍ Scribed by Jose Barluenga; Josefa Florez; Francisco J. Fananas


Publisher
John Wiley and Sons
Year
2010
Weight
27 KB
Volume
32
Category
Article
ISSN
0931-7597

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1,2 and 1,6 Additions of Lithium Reagent
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1,2 and 1,6 additions of lithium reagents to Ξ³-methylenepyran Fischer-type carbene complexes are described. The 1,2 adducts obtained from alkynyllithium addition evolve by a 1,3 shift of the W(CO) 5 fragment to give allenyltungsten carbonyl intermediates. Reaction with degassed water affords