Site-selective cross-coupling of dihalogenated acetophenones and dihalogenated benzophenones with aryl titanium reagents under catalyst control
作者:He Zhang
DOI:10.1007/s00706-023-03101-3
日期:2023.8
products viapalladium-catalyzedcross-coupling of aryl titanium reagents and dihalogenated benzophenone or dihalogenated acetophenone scaffolds is described. The method uses Pd(dba)2 as catalyst and 2-diisopropylphosphino-2′-dimethylaminobiphenyl as ligand in THF/NMP (3:1) (4.0 cm3) for 10 h at 0 °C. The system can tolerate various functional groups such as aldehydes, esters, etc. In the process of optimizing
描述了一种通过芳基钛试剂和二卤代二苯甲酮或二卤代苯乙酮支架的钯催化交叉偶联选择性形成C2偶联产物的方法。该方法使用Pd(dba) 2作为催化剂,2-二异丙基膦-2'-二甲基氨基联苯作为配体,在THF/NMP (3:1) (4.0 cm 3 )中于0℃反应10小时。该体系可以耐受醛、酯等多种官能团。在优化偶联方法的过程中,我们还合成了两种新的配体,并制备了五种新的单取代芳香酮,这在本文中为首次出现。 图形概要