Molecular iodine-catalyzed one-pot synthesis of substituted quinolines from imines and aldehydes
作者:Xu-Feng Lin、Sun-Liang Cui、Yan-Guang Wang
DOI:10.1016/j.tetlet.2006.02.136
日期:2006.5
A mild, efficient, and general method for the synthesis of substitutedquinolines via a molecular iodine-catalyzed one-pot domino reaction of imines with enolizable aldehydes has been described.
A rigid bicyclicketene was used to generate highlyconstrained polycyclic spiro-β-lactams through the Staudingerreaction. Depending on the imine component, high diastereoselectivity was observed in the process, leading to mainly the cis diastereoisomer in the case of aromatic imines. This results from an anti addition of the imine to the ketene, followed by a conrotatory ring closure in which the