通过AIBN / O 2催化剂体系实现了sp 3 C H键的官能化和C C键的裂解,在温和的反应条件下提供了一系列的二苯甲酮。机理研究表明,过氧化物中间体参与了这一转变,在二苯基甲烷的情况下,sp 3 C C键通过过氧化物重排而断裂,这可能提供了一种断裂相对较强的C C键并被应用的新方法。更一般的C C键活化。
Reductive Activation and Hydrofunctionalization of Olefins by Multiphoton Tandem Photoredox Catalysis
作者:Milena L. Czyz、Mitchell S. Taylor、Tyra H. Horngren、Anastasios Polyzos
DOI:10.1021/acscatal.1c01000
日期:2021.5.7
of olefin feedstocks to architecturally complex alkanes represents an important strategy in the expedient generation of valuable molecules for the chemical and life sciences. Synthetic approaches are reliant on the electrophilicactivation of unactivated olefins, necessitating functionalization with nucleophiles. However, the reductive functionalization of unactivated and less activatedolefins with
Calcium(II)-Catalyzed Intermolecular Hydroarylation of Deactivated Styrenes in Hexafluoroisopropanol
作者:Chenxiao Qi、Vincent Gandon、David Lebœuf
DOI:10.1002/anie.201809470
日期:2018.10.22
A challenging catalytic hydroarylation of highly electron deficient styrenes has been developed on the basis of efficient cooperation between a calcium(II) triflimide salt and hexafluoroisopropanol (HFIP). This method affords a large variety of diaryl alkanes, notably diaryl ethanes, in good to excellent yields, and is simple to implement and compatible with various functional groups. Furthermore,
intermolecular hydroacylation reaction of alkenes with simple aldehydes has been developed. This reaction offers a new approach to the selective preparation of branched ketones in high yields (up to 99%) and branched selectivities (up to 99:1). Experimental data provide evidence for reversible formation of acyl-nickel-alkyl intermediate, and DFT calculations show that the aldehydeC-H bond transfer
Indium Tribromide‐Catalysed Transfer‐Hydrogenation: Expanding the Scope of the Hydrogenation and of the Regiodivergent DH or HD Addition to Alkenes
作者:Luomo Li、Gerhard Hilt
DOI:10.1002/chem.202101259
日期:2021.8.2
The transfer-hydrogenation as well as the regioselective and regiodivergentaddition of H−D from regiospecific deuterated dihydroaromatic compounds to a variety of 1,1-di- and trisubstituted alkenes was realised with InBr3 in dichloro(m)ethane. In comparison with the previously reported BF3⋅Et2O-catalysed process, electron-deficient aryl-substituents can be applied reliably and thereby several restrictions
使用 InBr 3在二氯(甲烷)中实现转移氢化以及从区域特异性氘代二氢芳族化合物到各种 1,1-二和三取代烯烃的 HD 的区域选择性和区域发散加成。与之前报道的 BF 3 ⋅Et 2 O 催化工艺相比,缺电子芳基取代基可以可靠地应用,从而可以取消一些限制,并且可以在加氢氘化和氘化氢化转移中成功转化新型底物-氢化反应。
[EN] DUAL INHIBITORS OF SOLUBLE EPOXIDE HYDROLASE AND 5-LIPOXYGENASE<br/>[FR] INHIBITEURS DOUBLES D'ÉPOXYDE HYDROLASE SOLUBLE ET DE 5-LIPOXYGÉNASE
申请人:JOHANN WOLFGANG GOETHE UNIV FRANKFURT AM MAIN
公开号:WO2021214048A1
公开(公告)日:2021-10-28
The invention pertains to a novel structure (I) that provides an activity as a dual inhibitor of the enzymes soluble epoxide hydrolase (sEH) and 5-lipoxygenase (5-LOX). The invention pertains to multiple derivatives of the new class of dual inhibitors, their application in medicine, pharmaceutical compositions comprising them as well as to methods for synthesizing the new compounds.