Synthesis of Spiroannulated Dihydrofuran Compounds Utilizing Cerium(IV) Ammonium Nitrate

Cerium(IV) Ammonium Nitrate를 이용한 Spiroannulated 다이하이드로퓨란 화합물의 합성

  • Kim, Byung-SO (Div. of Chemical Engineering of Yeungnam College of Science Technology)
  • 김병소 (영남이공대학 물질공학계열)
  • Received : 2002.08.29
  • Accepted : 2002.11.19
  • Published : 2002.11.30

Abstract

An efficient synthesis of spiroannulated dihydrofurans is achieved from 1,3-dicarbonyl compounds and exocyclic alkenes in the presence of cerium ammonium nitrate(IV) in moderate yields. In the case of entries 3-9, as a single product was seen. Especially, reaction of 15 with methylenecyclohexane afforded the two regioisomeric cyclo adducts 21 and 22. The structures of these adducts were confirmed by IR and NMR-Spectra.

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