Cooperative Ligand-Promoted P<sup>(III)</sup>-Directed Ruthenium-Catalyzed Remote <i>Meta</i>-C–H Alkylation of Tertiary Phosphines
作者:Zheng-Xin Zhou、Jia-Wei Li、Liang-Neng Wang、Ming Li、Yue-Jin Liu、Ming-Hua Zeng
DOI:10.1021/acs.orglett.1c00237
日期:2021.3.19
ruthenium-catalyzed meta-selective C–H activation of phosphines by using intrinsic P(III) as a directing group. 2,2,6,6-Tetramethylheptane-3,5-dione acts as the ligand and exhibits an excellent performance in boosting the meta-alkylation. The protocol allows an efficient and straightforward synthesis of meta-alkylated tertiary phosphines. Several meta-alkylated phosphines were evaluated for Pd-catalyzed Suzuki coupling
在本文中,我们公开了钌催化的元通过使用固有的P.膦-选择性C-H活化(III)作为定向基团。2,2,6,6-四甲基庚烷-3,5-二酮充当配体并在促进间位烷基化方面表现出出色的性能。该方案允许间位烷基化的叔膦的有效而直接的合成。评估了几种间位烷基化的膦在Pd催化的Suzuki偶联中的作用,发现其优于市售的邻位取代的膦。通过双官能化膦的合成进一步证明了该方法的实用性。