Bismuth(III) Triflate Catalyzed Three-Component Reactions of Indoles, Ketones, and α-Bromoacetaldehyde Acetals Enable Indole-to-Carbazole Transformation.
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DOI: 10.1021/acs.orglett.8b01707
Abstract: A three-component reaction of indoles, α-bromoacetaldehyde acetals, and ketones was developed by using bismuth(III) triflate as the catalyst to realize a straightforward approach for synthesizing carbazole derivatives. The reaction was established mechanistically through the autotandem… read more here.
Keywords: bromoacetaldehyde acetals; three component; iii triflate; bismuth iii ... See more keywords
Phenolic acetals from lignins of varying compositions via iron(III) triflate catalysed depolymerisation
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DOI: 10.1039/c7gc00195a
Abstract: Lignin is a highly abundant, renewable aromatic polymer that can potentially be obtained in large quantities from lignocellulosic biorefineries. Thus the valorisation of this renewable resource by the production of aromatic chemicals would be highly… read more here.
Keywords: lignin; iron iii; iii triflate;
One-step synthesis of 2,5-diformylfuran from monosaccharides by using lanthanum(III) triflate, sulfur, and DMSO.
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DOI: 10.1039/d0cc05582d
Abstract: The combination of lanthanum(iii) triflate, sulfur, and dimethyl sulfoxide prompted a facile, direct preparation of 2,5-diformylfuran from glucose and fructose. The one-step dehydration/oxidation of fructose afforded 2,5-diformylfuran in an excellent yield with high selectivity. The… read more here.
Keywords: lanthanum iii; diformylfuran; triflate sulfur; one step ... See more keywords