Camphordisulfonamides: good chiral ligands for the addition of dialkylzinc to aliphatic aldehydes
作者:Oscar Prieto、Diego J Ramón、Miguel Yus
DOI:10.1016/s0957-4166(00)00100-2
日期:2000.4
preparation of several disulfonamides derived from camphor and their use in the titanium tetraisopropoxide-promoted enantioselective addition of dialkylzinc to aldehydes is described. The enantiomeric ratio is up to 98:2, the best results being obtained for aliphatic aldehydes.