作者:Mariam Zaky、Zhe Li、Timothy D. R. Morgan、François M. LeFort、Russell J. Boyd、D. Jean Burnell
DOI:10.1021/acs.joc.9b01900
日期:2019.11.1
nonheterocyclic allenyl aryl ketones was examined using boron trifluoride etherate and indium triflate to mediate the reaction. Yields with BF3 were low in most instances due mainly to competitive destruction of the substrates. With In(OTf)3, there was less decomposition, and the yields of the cyclized product were much higher, but only for substrates with electron-donating substituents. Cyclization did not
使用三氟化硼醚化物和三氟甲磺酸铟介导反应,检查了一系列非杂环烯基芳基酮的环化反应。在大多数情况下,BF3的收率较低,这主要是由于底物的竞争性破坏。使用In(OTf)3时,分解较少,并且环化产物的产率高得多,但仅适用于具有供电子取代基的底物。没有那些取代基就不会发生环化。使用ωB97X-D/ 6-311 + G(2d,p)//ωB97X-D/ 6-31 + G(d,p)方法进行的计算研究证实了铟(III)对σ复合衬底的稳定性更好底物苯环上的间位取代基显着影响环化的激活屏障,而对位取代基的作用几乎可以忽略不计。