Journal
GREEN CHEMISTRY
Volume 14, Issue 10, Pages 2912-2921Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2gc36131k
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- UFSM
- UDESC
- FAPERGS
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Indoles and benzaldehyde derivatives undergo an efficient one-pot smooth condensation and a further atmospheric-pressure aerobic dehydrogenation with CeCl3 in i-PrOH, to afford the corresponding oxidized bis(indol-3-yl) methanes. Use of 2,2'-bisindole as the heterocyclic precursor provides cyclic tetra(indolyl) dimethane derivatives, which further undergo partial oxidation to the related calix-shaped macrocycles, carrying an all cis 1,3,7-cyclodecatriene core and supporting a 2,2'-biindolylidene moiety. The syntheses of these high value-added compounds is operationally simple and can be performed at room temperature under mild, neutral and environmentally friendly conditions.
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