Highly efficient synthesis of 1,2-disubstituted acetylenes derivatives from the cross-coupling reactions of 1-bromoalkynes with organotitanium reagents
作者:Chuan Wu、Qing-Han Li
DOI:10.1016/j.tet.2021.132370
日期:2021.9
A Highly efficient route for the synthesis of 1,2-disubstituted acetylene derivatives has been developed by nickel catalyzed cross-couplings of alkynyl halides with aryl titanium reagents under mild conditions. This has given corresponding cross-coupling products good to excellent isolated yields of up to 92 %. The aryls bearing electron-donating or electron-withdrawing groups in either alkynylhalides
通过在温和条件下炔基卤化物与芳基钛试剂的镍催化交叉偶联,开发了一种高效合成 1,2-二取代乙炔衍生物的途径。这使得相应的交叉偶联产品具有高达 92% 的优良分离产率。在炔基卤化物或芳基钛底物中带有给电子或吸电子基团的芳基产生了良好的交叉偶联产物。该过程简单易行,为合成1,2-二取代乙炔衍生物提供了一种有效的方法。