β,β-Disilylated Sulfones as Versatile Building Blocks in Organic Chemistry - A New Sulfonyl Carbanion Transmetalation
作者:Ullrich Jahn、Bertrand Puget
DOI:10.1055/s-0030-1258772
日期:2010.10
1,3-Bis(trimethylsilyl)propyl phenyl sulfone undergoes, in contrast to all reported sulfones bearing α-hydrogen atoms, an initial ortho metalation to an aryllithium at low temperature, which transmetalates quantitatively to the corresponding α-sulfonyl organolithium intermediate. Both organolithiums react selectively with aldehydes to give the corresponding products in good to excellent yields with high selectivity.