Resorcin[4]arene-derived mono-, bis- and tetra-imidazolium salts as ligand precursors for Suzuki-Miyaura cross-coupling. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Organic & Biomolecular Chemistry Année : 2012

Resorcin[4]arene-derived mono-, bis- and tetra-imidazolium salts as ligand precursors for Suzuki-Miyaura cross-coupling.

Résumé

Eleven resorcinarene cavitands bearing either one, two or four (3-R-1-imidazolylium)-methyl substituents (R = (n)Bu, Ph, Mes, (i)Pr(2)C(6)H(3)) anchored at resorcinolic "ortho" positions have been synthesised from the appropriate bromomethylated precursor. Combining the imidazolium salts with palladium acetate and Cs(2)CO(3) gave active Suzuki-Miyaura cross coupling catalysts. The highest activities were observed with the doubly functionalised cavitands, which all have the imidazolylium groups attached to proximal resorcinol units.

Domaines

Chimie organique
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Dates et versions

hal-00855290 , version 1 (29-08-2013)

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Citer

Hani El Moll, David Semeril, Dominique Matt, Loïc Toupet, Jean-Jacques Harrowfield. Resorcin[4]arene-derived mono-, bis- and tetra-imidazolium salts as ligand precursors for Suzuki-Miyaura cross-coupling.. Organic & Biomolecular Chemistry, 2012, 10 (2), pp.372-82. ⟨10.1039/c1ob06404e⟩. ⟨hal-00855290⟩
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