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On the nature of carbenoids generated from bicyclo[1.1.0]butanes and transition metal complexes

✍ Scribed by R. Noyori

Publisher
Elsevier Science
Year
1973
Tongue
French
Weight
341 KB
Volume
14
Category
Article
ISSN
0040-4039

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✦ Synopsis

In valence bond description, a complex of a transition metal MxLn (x = oxidation number, L = ligand) and a carbene :CRR' (R, R' = H or carbon function) exists as a resonance hybrid consisting of the ylene form Ia and the two polar contributors, the metal-bonded carbanion Ib (ylide) and the metal-bonded carbocation Ic (inverse ylide).

2 The relative significance of the canonical forms is determined by the nature of the metal, its ligands, and the carbene substituents

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