A
<scp>Copper‐Catalyzed</scp>
[5+1] Cycloaddition of Terminal Alkynes with Diazo Esters through a Tandem 1,
<scp>
5‐
<i>H</i>
‐Shift
</scp>
Cyclization
作者:Tonggang Hao、Min Shi、Yin Wei
DOI:10.1002/cjoc.202200614
日期:2023.2
A copper-catalyzed [5+1] cycloaddition reaction of terminal alkynes with diazo esters for the rapid construction of protected naphthalen-1(2H)-one derivatives in moderate to good yields has been disclosed along with good functional group compatibility and a broad substrate scope. The mechanistic investigations reveal that this tandem cyclization process proceeds through a Cu(I)-catalyzed coupling of
已经公开了铜催化的末端炔烃与重氮酯的 [5+1] 环加成反应,用于以中等至良好的收率快速构建受保护的萘-1(2 H )-酮衍生物,以及良好的官能团相容性和广泛的应用底物范围。机理研究表明,该串联环化过程通过 Cu(I) 催化的末端炔烃与重氮乙酸酯的偶联、1,5 -H转移过程和通过丙二烯中间体的热诱导周环反应进行。本文还介绍了所获得的环加合物向萘酮、萘酚和二氢萘酚的合成用途和进一步转化。