Ir(III)-Catalyzed Direct C–H Functionalization of Arylphosphine Oxides: A Strategy for MOP-Type Ligands Synthesis
作者:Zhong Liu、Ji-Qiang Wu、Shang-Dong Yang
DOI:10.1021/acs.orglett.7b02710
日期:2017.10.6
efficiently applied to Ir(III)-catalyzed direct C–H functionalization of arylphosphine oxides. Involving C–H activation, carbene insertion, and tautomerism, this reaction proceeds under mild conditions, thus proving an approach to the synthesis of MOP-type ligand precursor in a single step. The utility of this transformation has been further demonstrated in ligand synthesis as well as in the construction
Rh(II)-Catalyzed Synthetic Strategy for Diverse and Functionalized Halonaphthalenyl Ethers and Esters from Diazo Compounds and Its Application to Polyaromatic Compounds
作者:Yong Lee、Ek Baral、Sung Kim、Young-Jung Wee
DOI:10.1055/s-0035-1561295
日期:——
various functionalized halonaphthalenyl ethers and esters in moderate to good yield was achieved via rhodium(II)-catalyzed reaction of readily available diazo compounds with benzyl halides or acid halides. This methodology has several advantages, such as ease of handling, mild reaction conditions, bromine- or chlorine-free route, and the use of an effective catalyst. The synthesized compounds were further
Rhodium(<scp>iii</scp>)-catalyzed synthesis of spirocyclic isoindole <i>N</i>-oxides and isobenzofuranones <i>via</i> C–H activation and spiroannulation
作者:Xi Han、Lingheng Kong、Jiami Feng、Xingwei Li
DOI:10.1039/d0cc00830c
日期:——
Rhodium(iii)-catalyzed mild and oxidative [4+1] spiroannulation has been realized via C-Hactivation of oximes and benzoic acids with 1-diazonaphthelen-2(1H)-ones as coupling reagents. This transformation integrates C-Hactivation and dearomatization and provides a direct approach to spirocyclic isoindole N-oxides and isobenzofuranones with functional group tolerance.
Synthesis of Diverse Indene Derivatives from 1-Diazonaphthalen-2(1<i>H</i>)-ones via Thermal Cascade Reactions
作者:Krishna Bahadur Somai Magar、Yong Rok Lee
DOI:10.1021/ol4019908
日期:2013.9.6
generates 1H-indene-3-carboxamides or 1H-indene-3-carboxylates. This constitutes an unprecedented three-component coupling reaction that allows for the synthesis of functionalized indenederivatives under catalyst-free thermal conditions.
1-重氮萘-2(1 H)-的连续Wolff重排,然后在存在各种醛的情况下用伯胺和芳族胺或醇和酚捕获烯酮中间体,生成1 H-茚3羧酰胺或1 H -茚-3-羧酸盐。这构成了前所未有的三组分偶联反应,可在无催化剂的热条件下合成官能化的茚衍生物。
Oxygen‐Linked Cyclopentadienyl Rhodium(III) Complexes‐Catalyzed Asymmetric C−H Arylation of Benzo[
<i>h</i>
]quinolines with 1‐Diazonaphthoquinones
作者:Chongqing Pan、Si‐Yong Yin、Shao‐Bo Wang、Qing Gu、Shu‐Li You
DOI:10.1002/anie.202103638
日期:2021.7.5
functionalization reactions have witnessed a significant progress in organic synthesis. In sharp contrast, the reported chiral Cp ligands are limited to C-linked Cp and are often synthetically challenging. To address these issues, we have developed a novel class of tunable chiral cyclopentadienyl ligands bearing oxygen linkers, which were efficient catalysts for C−H arylation of benzo[h]quinolines with