Hot emerging area: Transition metal-catalysed (4 + 3) cycloaddition reactions involving allyl cations

Israel Fernández and José Luis Mascareñas review novel intramolecular (4 +3)-cycloaddition reactions of allenedienes in this Emerging Area article, focussing on recent examples where the allene acts as an allylic-cation surrogate.  These methodologies overcome problems with previous strategies involving unstable allyl cation precursors or the need for stoichiometric activators and conformationally restricted dienes.

Areas covered include:

  • (4 + 3)-Cycloaddition reactions mediated by platinum(II) and gold(I) complexes
  • Aromaticity in the (4 + 3)-cycloaddition
  • Concerted vs. stepwise reaction mechanisms

As with all our hot research, this article will be free to access for 4 weeks – so take a look today:

Transition metal-catalysed (4 + 3) cycloaddition reactions involving allyl cations
Israel Fernández and José Luis Mascareñas
DOI: 10.1039/C1OB06604H

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