Inserção C-H de carbenóides de ródio em água e reutilização do catalisador

AUTOR(ES)

Candeias, Nuno R., Gois, Pedro M. P., Afonso, Carlos A. M.

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2007

RESUMO

A five-session laboratory experiment is described for the synthesis of a beta-lactam via Rh(II) catalysed intramolecular C-H insertion of a alpha-diazo-alpha-ethoxycarbonylacetamide. The metallo-carbene, responsible for the C-H bond activation, was generated from the diazo substrate and the catalyst Rh2(OAc)4. The high stability and solubility of the catalyst and the exclusive C-H insertion of the Rh-carbene allows the synthesis of this important heterocycle in water and the catalyst reutilization.

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