Running rings around gold: A new cascade reaction catalysed by AuCl3 that is based upon an initial cycloisomerisation reaction of enynol or enynamine derivatives, which form 1,3-butadiene derivatives, followed by a Diels–Alder cycloaddition reaction to give fused or spirocyclic compounds is reported (see scheme).
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Barluenga et al. (2010) studied this question.
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