cobalt-catalyzed enantioconvergent radical Negishi C(sp3)–C(sp2) cross-coupling of racemic benzyl chlorides with arylzinc reagents has been developed in good yield with moderate enantioselectivities. This strategy provides an expedient access toward a range of enantioenriched 1,1-diarylmethanes. Key to this discovery is the utilization of a chiral multidentate anionic N,N,P-ligand to strongly coordinate with the
Nickel-catalyzed Enantioselective Hydroarylation and Hydroalkenylation of Styrenes
作者:Yue-Gang Chen、Bin Shuai、Xue-Tao Xu、Yi-Qian Li、Qi-Liang Yang、Hui Qiu、Kun Zhang、Ping Fang、Tian-Sheng Mei
DOI:10.1021/jacs.8b13524
日期:2019.2.27
We have developed a Ni-catalyzed enantioselective hydroarylation of styrenes with arylboronic acids using MeOH as the hydrogen source, providing an efficient method to access 1,1-diarylalkanes, which are essential structural units in many biologically active compounds. In addition, Ni-catalyzed enantioselective hydrovinylation of styrenes with vinylboronic acids is also realized with good yields and
我们开发了一种使用 MeOH 作为氢源的 Ni 催化的苯乙烯与芳基硼酸的对映选择性加氢芳基化反应,提供了一种获得 1,1-二芳基烷烃的有效方法,这些烷烃是许多生物活性化合物的基本结构单元。此外,Ni催化苯乙烯与乙烯基硼酸的对映选择性加氢乙烯基化也以良好的产率和对映选择性实现。(R)-(-)-布洛芬的有效合成证明了其合成效用。
Copper-Catalyzed Site-Selective Electrophilic Aromatic Alkylation of Monosubstituted Simple Arenes
作者:Wanting Fu、Jing Tian、Yuanli Ding、Xi Wang、Meiyan Wang、Zikun Wang
DOI:10.1021/acs.orglett.4c00475
日期:2024.4.5
A copper-catalyzed highly para-selective electrophilic aromatic alkylation of monosubstituted simple arenes has been accomplished. This method provides a practical platform for the transformation from simple commercial arenes to well-defined di- and multisubstituted aromatics with high added value. Control experiments and DFT calculations reveal that the achievement of the excellent site-selectivity