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Note | Special issue | Vol 66, No. 1, 2005, pp.645-649
Published online, 22nd November, 2005
DOI: 10.3987/COM-05-S(K)62
Hetero-Diels-Alder Reaction Catalyzed by Self-organized Polymeric Rare Earth Complexes under Solvent-free Conditions

Shuichi Ishida, Tetsuji Hayano, Hiroshi Furuno, and Junji Inanaga*

*Synthetic Methodology and Catalysis, Institute for Materials Chemistry and Engineering (IMCE), Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan


2-Substituted 2,3-dihydropyran-4-one derivatives were conveniently synthesized under solvent-free conditions by Lewis acid-catalysis with a polymeric scandium sulfonate complex, which can be prepared in a self-organized manner in one step and successfully reused for the next round of reactions.