Pd(0)-Catalyzed Tandem Deprotection/Cyclization of Tetrahydro-β-carbolines on Allenes: Application to the Synthesis of Indolo[2,3-<i>a</i>]quinolizidines
作者:Valerian Gobé、Xavier Guinchard
DOI:10.1021/ol500448j
日期:2014.4.4
The pallado-catalyzed tandemdeprotection/cyclization reaction of enantioenriched N-allyl tetrahydro-β-carbolines on allenes is described. The first step generates in situ a deprotected tetrahydro-β-carboline, which then undergoes a cyclization on the allene function via an intermediate π-allyl Pd(II) derivative. This reaction results in the synthesis of various chiralindolic tetracycles (mainly indolo[2