Ligand-controlled access to [4 + 2] and [4 + 3] cycloadditions in gold-catalyzed reactions of allene-dienes.
نویسندگان
چکیده
By adjustment of the electronic properties of the ancilliary ligands, high selectivity can be achieved for either [4 + 2] or [4 + 3] cycloaddition reactions of allene-dienes catalyzed by gold(I). Triarylphosphitegold(I) complexes are employed as catalysts for a [4 + 2] cycloaddition reaction leading to alkylidenecyclohexenes. Conversely, di-tert-butylbiphenylphosphinegold(I)-catalyzed reactions afford cycloheptadienes via [4 + 3] cycloaddition reactions.
منابع مشابه
Gold(I)-catalyzed enantioselective [4 + 2]-cycloaddition of allene-dienes.
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ورودعنوان ژورنال:
- Journal of the American Chemical Society
دوره 131 18 شماره
صفحات -
تاریخ انتشار 2009