[EN] REAGENTS AND PROCESS FOR DIRECT C-H FUNCTIONALIZATION<br/>[FR] RÉACTIFS ET PROCÉDÉ POUR LA FONCTIONNALISATION DIRECTE DE LA LIAISON C-H
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:WO2020094673A1
公开(公告)日:2020-05-14
Thianthrene derivative of the Formula (I): wherein R1 to R8 may be the same or different and are selected from hydrogen, Cl, F, a partially or fully fluorinated C1 to C6 alkyl group, and wherein n is 0 or 1, with the proviso that at least one of R1 to R8 is not hydrogen and process for C-H functionalization of aromatic compounds using this compound.
Site‐Selective C−H Oxygenation via Aryl Sulfonium Salts
作者:Ruocheng Sang、Stamatis E. Korkis、Wanqi Su、Fei Ye、Pascal S. Engl、Florian Berger、Tobias Ritter
DOI:10.1002/anie.201908718
日期:2019.11.4
Herein, we report a two-step process forming arene C-O bonds in excellent site-selectivity at a late-stage. The C-O bond formation is achieved by selective introduction of a thianthrenium group, which is then converted into C-O bonds using photoredox chemistry. Electron-rich, -poor and -neutral arenes as well as complex drug-like small molecules are successfully transformed into both phenols and various
在此,我们报告了一种在后期以优异的位点选择性形成芳烃CO键的两步过程。CO 键的形成是通过选择性引入铊基团来实现的,然后使用光氧化还原化学将其转化为 CO 键。富电子、贫电子和中性芳烃以及复杂的类药物小分子被成功转化为酚类和各种醚类。该序列在概念上不同于所有先前的芳烃氧化反应,因为氧官能团可以在后期选择性地结合到复杂的小分子中,这尚未通过芳基卤化物显示出来。
Regio‐ and Stereoselective Thianthrenation of Olefins To Access Versatile Alkenyl Electrophiles
作者:Junting Chen、Jiakun Li、Matthew B. Plutschack、Florian Berger、Tobias Ritter
DOI:10.1002/anie.201914215
日期:2020.3.27
we report a regioselective alkenyl electrophile synthesis from unactivated olefins that is based on a direct and regioselective C-H thianthrenation reaction. The selectivity is proposed to arise from an unusual inverse-electron-demand hetero-Diels-Alder reaction. The alkenyl sulfonium salts can serve as electrophiles in palladium- and ruthenium-catalyzed cross-coupling reactions to make alkenyl C-C,
C–N Cross-Couplings for Site-Selective Late-Stage Diversification via Aryl Sulfonium Salts
作者:Pascal S. Engl、Andreas P. Häring、Florian Berger、Georg Berger、Alberto Pérez-Bitrián、Tobias Ritter
DOI:10.1021/jacs.9b07323
日期:2019.8.28
We report diverse C-N cross-coupling reactions of aryl thianthrenium salts that are formed site-selectively by direct C-H functionalization. The scope of N-nucleophiles ranges fromprimary and secondary alkyl and aryl amines to various N-containing heterocycles, and the overall transformation is applicable to late-stage functionalization of complex, drug-like small molecules.
Incorporation of the CF3 group into arenes has found increasing importance in drug discovery. Herein, we report the first photoredox-catalyzed cross-coupling of aryl thianthrenium salts with a copper-based trifluoromethyl reagent, which enables a site-selective late-stagetrifluoromethylation of arenes. The reaction proceeds with broad functional group tolerance, even for complex small molecules on