Synthesis of 3-Benzazepines by Metal-Free Oxidative C-H Bond Functionalization-Ring Expansion Tandem Reaction
作者:Andrea Gini、Julia Bamberger、Javier Luis-Barrera、Mercedes Zurro、Rubén Mas-Ballesté、José Alemán、Olga García Mancheño
DOI:10.1002/adsc.201600985
日期:2016.12.22
A metal‐free synthesis of biologically important benzazepines is achieved through a single synthetic operation involving an oxidative C–H bond functionalization and ring expansion with diazomethanes as key reagent. This represents a new, strong methodology for the straightforward construction of the seven‐ring N‐heterocyclic structures under mild conditions using a 2,2,6,6‐tetramethylpiperidine 1‐oxyl