Preparation of Heterocyclic Amines by an Oxidative Amination of Zinc Organometallics Mediated by CuI: A New Oxidative Cycloamination for the Preparation of Annulated Indole Derivatives
作者:Marcel Kienle、Andreas J. Wagner、Cora Dunst、Paul Knochel
DOI:10.1002/asia.201000367
日期:2011.2.1
Functionalized heterocyclic zinc reagents are easily aminated by an oxidativeaminationreaction of zinc amidocuprates prepared from various lithium amides. For the oxidation step, PhI(OAc)2 proved to be the best reagent. The required heterocyclic zinc organometallics can be prepared either by direct metalation, by magnesium insertion in the presence of ZnCl2, or by transmetalation of a suitable magnesium