A rare, ruthenium‐catalyzed, oxazolinlyl assistedC−Hfunctionalization and three‐componentcascadecyclization for the synthesis of isoquinolinones via a metal‐carbenemigratoryinsertion is reported. The transformation is unique since it involves the formation of multiple bonds in onepot via C−Hfunctionalization and ring opening of oxazolines. Detailed mechanistic investigations reveal interesting
Rhodium(III)-Catalyzed Oxidative Cyclization of Oxazolines with Cyclopropanols: Synthesis of Isoindolinones
作者:Jidan Liu、Zhenke Yang、Jinyuan Jiang、Qiaohai Zeng、Liyao Zheng、Zhao-Qing Liu
DOI:10.1021/acs.orglett.1c02031
日期:2021.8.6
The synthesis of C3-substituted isoindolin-1-ones from oxazolines and cyclopropanols has been achieved with oxazoline as a bifunctional nucleophilic directing group. The reaction proceeds by the cleavage of three chemical bonds and allows the formation of three new chemical bonds, a C–N bond, a C–C bond, and a C–O bond, in a single step.
Sulfoxonium Ylides as Carbene Precursors: Rhodium(III)‐Catalyzed Sequential C−H Functionalization, Selective Enol Oxygen‐Atom Nucleophilic Addition, and Hydrolysis
作者:Yuanqiong Huang、Xueli Lyu、Hongjian Song、Qingmin Wang
DOI:10.1002/adsc.201900861
日期:2019.11.19
Herein, we report a protocol for Rh(III)‐catalyzed annulation reactions between oxazolines and sulfoxonium ylides via a sequence involving C−H activation, selective enol oxygen‐atom nucleophilic addition, and hydrolysis. This practical, operationally simple protocol has a wide substrate range, excellent regioselectivity, and moderate to good yields.
Ruthenium(II) 9,10-phenanthrenequinone thiosemicarbazone complexes: synthesis, characterization, and catalytic activity towards the reduction as well as condensation of nitriles
作者:Panneerselvam Anitha、Periasamy Viswanathamurthi、Devarayan Kesavan、Ray Jay Butcher
DOI:10.1080/00958972.2014.977269
日期:2015.1.17
with O, N, and S as the donor sites and are in the thiol form in all the complexes. Catalytic studies showed that all the complexes displayed good catalytic activity towards the reduction of nitriles and also the condensation of nitriles with 2-aminoalcohol under solvent-free conditions. Graphical Abstract
配体 9,10-菲醌-N4-取代的缩氨基硫脲 (HL1-3) 及其钌 (II) 配合物被合成并通过元素和光谱方法表征。配体是三齿一元螯合配体,以 O、N 和 S 作为供体位点,并且在所有配合物中都是硫醇形式。催化研究表明,所有配合物对腈的还原以及腈与 2-氨基醇在无溶剂条件下的缩合均表现出良好的催化活性。图形概要