γ-Heteroatom directed stereocontrolled Staudinger cycloaddition reaction of vinylketenes and imines
作者:Aarif L. Shaikh、Vedavati G. Puranik、A.R.A.S. Deshmukh
DOI:10.1016/j.tetlet.2006.05.189
日期:2006.8
Vinylketenes possessing a γ-heteroatom, on Staudinger cycloadditionreaction with imines gave trans-3-vinyl-β-lactams in very good yields. The vinyl side chain stereoselectively adopts the Z-configuration in the transition state to stabilize the vinylketene and produces, exclusively, trans-3-vinyl-β-lactams.