Publication :
Recyclable iron(II) caffeine-derived ionic salt catalyst in the Diels–Alder reaction of cyclopentadiene and α,β-unsaturated N-acyloxazolidinones in dimethyl carbonate

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Date
2019-07-15
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Direction de recherche
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Éditeur
Royal Society of Chemistry
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Résumé
Iron(II) triflate was used in combination with caffeine-derived salts as recyclable catalysts for the Diels–Alder reaction run in dimethyl carbonate (DMC) as a green solvent. The catalyst was prepared as an ionic salt from a xanthinium salt and Fe(OTf)2. Various substrates including α,β-unsaturated carbonyl and N-acyloxazolidinone derivatives were reacted with cyclopentadiene using this recyclable catalyst. The use of a low catalyst loading (1 mol%) afforded high yields (up to 99%) of the corresponding cycloadducts. The recycling and the efficiency of the catalyst were demonstrated for several runs.
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Revue
RSC Advances, Vol. 38 (9), 21956–21963 (2019)
DOI
10.1039/c9ra04098f
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Type de document
article de recherche