General Stereoselective Route to (E)-3-Hydroxy-1-alkenyl Chlorides and Phenyl Ethers
作者:Seiichi Takano、Yoshiaki Sugihara、Kunio Ogasawara
DOI:10.3987/com-94-s(b)42
日期:——
Treatment of 2,3-epoxyalkyl chlorides with potassium tert-butoxide affords the corresponding (E)-1-chloro-3-hydroxyalkenes stereoselectively when dicyclohexano-18-crown-6 is present. On the other hand, 2,3-epoxyalkyl phenyl ethers furnish (E)-3-hydroxy-1-alkenyl phenyl ethers stereoselectively upon exposure to n-butyllithium in the presence of hexamethylphosphoric triamide.