Ligand-Free Ullmann Arylation of Indole Using PEG3400-Cu2O-Cs2CO3

doi:10.1055/s-0030-1257787

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Synfacts 2010(8): 0963-0963
DOI: 10.1055/s-0030-1257787

Polymer-Supported Synthesis

Ligand-Free Ullmann Arylation of Indole Using PEG₃₄₀₀-Cu₂O-Cs₂CO₃

Contributor(s): Yasuhiro Uozumi, Toshimasa Suzuka
E. Colacino, L. Villebrun, J. Martinez, F. Lamaty*
Université de Montpellier II, France

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Publication History

Publication Date:
22 July 2010 (online)

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Significance

The ligand-free Ullmann arylation of indole with aryl halides was performed with a PEG₃₄₀₀-Cu₂O-Cs₂CO₃ system. The coupling reaction was carried out in a high molecular weight PEG matrix as a solvent. The catalytic composite PEG₃₄₀₀-Cu₂O-Cs₂CO₃ was recovered by precipitation with Et₂O.