An Efficient Route to Quinolines and Other Compounds by Iron-Catalysed Cross-Dehydrogenative Coupling Reactions of Glycine Derivatives
作者:Peng Liu、Zhiming Wang、Jue Lin、Xianming Hu
DOI:10.1002/ejoc.201101656
日期:2012.3
A simple method has been developed for functionalizing glycinederivatives by iron-catalysedcross-dehydrogenativecoupling (CDC) reactions. In particular, N-arylglycine derivatives reacted with alkynes by oxidative C–H/C–H couplingreactions to provide a series of substituted quinolines starting from commercially inexpensive materials. Moreover, N-arylglycine esters can be oxidatively coupled to ketones
AbstractA novel CBr4‐mediated dehydrogenative Povarov/aromatization tandem reaction of glycine derivatives with alkenes, leading to complex quinoline derivatives, and a CBr4‐mediated dehydrogenative CH functionalization of N‐aryl tetrahydroisoquinolines with nucleophiles to form CC and CP bonds are reported. The reactions were performed under very simple and mild reaction conditions; only CBr4 was used as a promoter. A plausible mechanism involving a radical process is proposed.