%0 Journal Article %T Crown Ethers As new Catalysts in the Highly Regioselective Halogenative Cleavage of Epoxides with Elemental Halogen %A Hashem Sharghi %A Ahmad Reza Massah %A Eshghi, Hossein %A Khodabakhsh Niknam %J Journal of Organic Chemistry %@ 0022-3263 %D 1998