Platinum(II)-Catalyzed 1,6-Diene Cycloisomerizations: Turnover in the Absence of β-Hydride Elimination
Organic Letters2004Vol. 6(17), pp. 3013–3015
Citations Over TimeTop 10% of 2004 papers
Abstract
Electrophilic pincer-ligated Pt(II)-dications are efficient catalysts for the cycloisomerization of 1,6-dienes, initiated by alkene activation. The tridentate ligands inhibit beta-hydride elimination and thus enable cationic mechanisms that turnover by Pt(II) extrusion. PPP ligands lead to cyclopropane products, while PNP ligands provide cyclohexene products; mechanistic issues are also discussed.
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