Intramolecular iodoetherification of ene or diene ketals: facile synthesis of spiroketals.

@article{Fujioka2011IntramolecularIO,
  title={Intramolecular iodoetherification of ene or diene ketals: facile synthesis of spiroketals.},
  author={H. Fujioka and Kenji Nakahara and Hideki Hirose and Kie Hirano and Tomohiro Oki and Y. Kita},
  journal={Chemical communications},
  year={2011},
  volume={47 3},
  pages={
          1060-2
        }
}
A novel and rapid approach to chiral mono- or di-substituted spiroketals based on remote asymmetric induction by intramolecular iodoetherification of ene or diene ketals has been developed. This strategy concisely offers 5,5- and 5,6-spiroketals including the natural insect pheromone of the wasp. 

Topics from this paper

Asymmetric total synthesis of clavolonine.
Asymmetric total synthesis of (-)-stenine and 9a-epi-stenine.
Halogen Bonding Helicates Encompassing Iodonium Cations
Substituent Effects on the [N–I–N]+ Halogen Bond

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