4.4 Article

A NHC-Involved, Cascade, Metal-Free, and Three-Component Synthesis of 2,3-Diarylated Fully Substituted Furans under Solvent-Free Conditions

Journal

SYNLETT
Volume -, Issue 16, Pages 2420-2424

Publisher

GEORG THIEME VERLAG KG
DOI: 10.1055/s-0030-1261229

Keywords

NHC; fully substituted furans; umpolung; solvent-free synthesis; multicomponent reaction

Funding

  1. Natural Science Foundation of the Jiangsu Higher Education Institutions [09KJA430003]
  2. Natural Science Foundation of Xuzhou City [XM09B016]
  3. Graduate Foundation of Xuzhou Normal University [2010YLB029]
  4. Qing Lan Project [08QLT001]

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An efficient synthesis of 2,3-diarylated fully substituted furans was performed through the sequential reactions of Knoevenagel reaction, Stetter reaction catalyzed by NHC, and intramolecular cyclization under solvent-free conditions. The protocol has the advantages of easy workup, high yields, and an environmental benign procedure compared with the reported methods.

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