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46.5.6.1 Method 1: Cycloisomerization of Dienynes

DOI: 10.1055/sos-SD-046-00090

Gandon, V.; Thorimbert, S.; Malacria, M.Science of Synthesis, (200946232.

Dienynes have the same degree of unsaturation as the homologous allenynes so it is not surprising that, in the presence of transition-metal complexes, these polyunsaturated compounds are good candidates for cycloisomerizations. Such substrates include simple dienynes[‌196‌,‌178‌] and, for example, the diester 214 gives the corresponding bicyclic transannular diene 216 in 72% yield when gold complex 215 is employed as the catalyst (Scheme 74).[‌196‌]

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