<scp>Nickel‐Catalyzed</scp>Reductive Coupling of Aldehydes with Alkynes Mediated by Alcohol<sup>†</sup>
作者:Yan‐Long Zheng、Mengchun Ye
DOI:10.1002/cjoc.201900543
日期:2020.5
A nickel‐catalyzed reductive coupling of aldehydes with alkynes using 1‐phenylethanol as reducing agent has been developed. The key achievement of this work is that we demonstrate environmentally benign 1‐phenylethanol can serve as a viable alternative reducing agent to Et3B, ZnEt2 and R3SiH for the nickel‐catalyzed reductive coupling reaction of aldehyde and alkynes.
We have developed a redox-economical coupling reaction of alcohols and alkynes to form allylic alcohols under mild conditions. The reaction is redox-neutral as well as redox-economical and thus free from any additives such as a reductant or an oxidant. This atom-economical coupling can be applied for the conversion of both aliphatic and benzylic alcohols to the corresponding substituted allylic alcohols in a single synthetic operation.