Cobalt-Catalyzed Hydrohydrazination of Dienes and Enynes: Access to Allylic and Propargylic Hydrazides
摘要:
The cobalt-catalyzed hydrohydrazination reaction of dienes and enynes is presented. Allylic and propargylic hydrazines were obtained in synthetically useful yields (allylic amines, 60-90%; propargylic arnines, 47-83%) and good chemo- and regioselectivity.
Catalytic Azido‐Hydrazination of Alkenes Enabled by Visible Light: Mechanistic Studies and Synthetic Applications
作者:Peng Wang、Yunxuan Luo、Songsong Zhu、Dengfu Lu、Yuefa Gong
DOI:10.1002/adsc.201901041
日期:2019.12.17
visible‐light‐enabled catalytic intermolecular azido‐hydrazination method for unactivated alkenes is developed via an orderly radical addition sequence. This transformation features metal‐free and redox‐neutral conditions and is applicable to a wide range of alkenes with commercially available reagents. Mechanistic and kinetic studies reveal that the efficient generation of azide radical enabled by fluorenone