First Diastereoselective Intramolecular Baylis−Hillman Reaction: An Easy Access to Chiral α-Methylene-β-hydroxylactones
作者:Palakodety Radha Krishna、V. Kannan、G. V. M. Sharma
DOI:10.1021/jo049511k
日期:2004.9.1
The first diastereoselective intramolecular Baylis−Hillman reaction of chiral substrates is reported wherein both aldehyde and activated olefin coexist as substituents to afford α-methylene-β-hydroxylactones in good yields exclusively as single isomers under the standard base-catalyzedreaction conditions in CH2Cl2. Formation of alkoxylactones by an in situ derivatization of adducts was also observed