Design, Synthesis, and Evaluation of Extended C<sub>4</sub>–Symmetric Dirhodium Tetracarboxylate Catalysts
作者:Zachary J. Garlets、Yannick T. Boni、Jack C. Sharland、Randall P. Kirby、Jiantao Fu、John Bacsa、Huw M. L. Davies
DOI:10.1021/acscatal.2c03041
日期:2022.9.2
C4-symmetric bowl-shaped dirhodium tetracarboxylate catalysts are described. These elaborate high-symmetry catalysts are readily generated by means of the self-assembly of four C1-symmetric ligands around the dirhodium core. These catalysts are capable of highly site-selective, diastereoselective, and enantioselective C–H functionalization reactions by means of donor/acceptor carbene-induced C–H insertions
描述了六种C 4对称碗形四羧酸二铑催化剂的合成和评价。这些精细的高对称性催化剂很容易通过四个 C 1对称配体在二铑核心周围的自组装产生。这些催化剂能够通过供体/受体卡宾诱导的 C-H 插入进行高度位点选择性、非对映选择性和对映选择性 C-H 官能化反应。
Synthesis, characterization, spectroscopy, electronic and redox properties of a new nickel dithiolene system
作者:Partha Basu、Archana Nigam、Benjamin Mogesa、Suzanne Denti、Victor N. Nemykin
DOI:10.1016/j.ica.2010.04.004
日期:2010.10
A new dithiolene ligand with 3,5-dibromo substituted phenyl groups was designed and synthesized. The protected form of the ligand was reacted with a nickel salt providing neutral Ni(S(2)C(2)(3,5-C(6)H(3)Br(2))(2))(2) and anionic [Ni(S(2)C(2)(3,5-C(6)H(3)Br(2))(2))(2)] isolated as a Bu(4)N(+) salt. Both were characterized by UV-Vis and IR spectroscopy and compared with the similar known molecular systems. They exhibit intense low energy transitions that are characteristic of such systems. The electrochemical behavior of these molecules was investigated by cyclic voltammetry. (C) 2010 Elsevier B.V. All rights reserved.