Design of an Electron-Withdrawing Benzonitrile Ligand for Ni-Catalyzed Cross-Coupling Involving Tertiary Nucleophiles
作者:L. Reginald Mills、Racquel K. Edjoc、Sophie A. L. Rousseaux
DOI:10.1021/jacs.1c05281
日期:2021.7.14
The design of new ligands for cross-coupling is essential for developing new catalytic reactions that access valuable products such as pharmaceuticals. In this report, we exploit the reactivity of nitrile-containing additives in Ni catalysis to design a benzonitrile-containing ligand for cross-coupling involving tertiary nucleophiles. Kinetic and Hammett studies are used to elucidate the role of the
设计用于交叉偶联的新配体对于开发获得有价值产品(如药物)的新催化反应至关重要。在本报告中,我们利用含腈添加剂在 Ni 催化中的反应性来设计含苄腈的配体,用于涉及三级亲核试剂的交叉偶联。动力学和哈米特研究用于阐明优化配体的作用,这表明苄腈部分充当电子受体,以促进还原消除而不是 β-氢化物消除并稳定低价镍。在这些条件下,进行了脱氰-金属化和镍催化芳基化的方案,从而能够从双取代丙二腈中获得四元 α-芳基腈。
HETEROCYCLIC COMPOUNDS FOR THE INHIBITION OF PASK
申请人:McCall John M.
公开号:US20120277224A1
公开(公告)日:2012-11-01
Disclosed herein are new heterocyclic compounds and compositions and their application as pharmaceuticals for the treatment of disease. Methods of inhibiting PAS Kinase (PASK) activity in a human or animal subject are also provided for the treatment of diseases such as diabetes mellitus.
Direct Oxidation of Aryl Malononitriles Enabling a Copper-Catalyzed Intermolecular Alkene Carbochlorination
作者:Prakash Basnet、Gang Hong、Charles E. Hendrick、Marisa C. Kozlowski
DOI:10.1021/acs.orglett.0c03941
日期:2021.1.15
A copper-catalyzed carbochlorination of alkenes with aryl malononitriles and chloride is disclosed. This net oxidative transformation proceeds with activated and unactivated alkenes with moderate to excellent yields. Mechanism experiments suggest addition of the malononitrile radical to form a secondary carbon radical which is intercepted by a chloride source. The resultant products can be transformed
Coordination, heterolysis, and electron-transfer reactions involving delocalized carbocations and carbanions in solution
作者:E. B. Troughton、K. E. Molter、E. M. Arnett
DOI:10.1021/ja00334a043
日期:1984.10
Mise en evidence d'equilibres de coordinateurs/heterolyse pour les reactions reversibles entre carbocations et carbanions. Cette possibilite est etudiee avec les trimethyl- et triphenyl-cyclopropene-2yl nitro-4' phenyl malononitriles
Mise en evidence d'equilibres de coordinaurs/heterolyse pour les reactors reversibles entre carbocations et carbionions。Cette possibilite est etudiee avec les trimethyl- et triphenyl-cyclopropene-2yl nitro-4' phenyl malononitriles
Arylmalononitriles were prepared from the corresponding benzoyl chlorides by three reaction steps . Treatment of the starting substances with cyanotrimethylsilane in the presence of pyridine gave dicyanotrimethylsiloxymethylbenzenes, which were transformed into chlorodicyanomethylbenzenes with POCl3-pyridine in the second step. Finally, reduction of chlorodicyanomethylbenzenes with Zn–CH3CO2H afforded