Metal‐Free Oxidative Annulation/Cyclization of 1,6‐Enynes for the Synthesis of 4‐Carbonylquinolines
作者:Xiao‐Feng Xia、Wei He、Dawei Wang
DOI:10.1002/adsc.201900013
日期:2019.6.18
Herein we report on the development of a metal‐freeoxidativeannulation reaction of 1,6‐enynes, leading to 4‐carbonylquinolines by using dioxygen as a green sustainable oxidant. Key advances include the use of readily available tert‐butyl nitrite (TBN) to promote radical annulation of 1,6‐enynes and easy‐to‐handle reaction conditions. Preliminary mechanistic studies including radical capture reactions