Stereoselective synthesis and Lewis acid mediated functionalization of novel 3-methylthio-β-lactams
作者:Shamsher S. Bari、Reshma、Aman Bhalla、Geeta Hundal
DOI:10.1016/j.tet.2009.09.086
日期:2009.11
subjected to Lewis acid (TiCl4 or SnCl4) mediated functionalization using various active aromatic, heterocyclic and aliphatic compounds (nucleophiles). This reaction provides an easy access to novel, stereoselective cis-3-monosubstituted-3-methylthio-β-lactams, which further undergo smooth desulfurization with Raney-nickel to afford C-3 cis- and trans-monosubstituted-β-lactams. The cis or trans configuration