通过以 O 2作为唯一氧源的电化学瓦克型氧化,开发了一种从三芳基取代的烯烃中有效合成各种 1,2,2-三芳基乙酮的方法。它提出了瓦克型氧化将其底物范围扩展到三取代烯烃的第一个实例。该方法不含过渡金属,与各种官能团相容,并且可以在温和的条件下进行,从而获得令人满意的产率。机械实验表明 C O 键的形成是通过阳离子碳物质和超氧自由基之间的反应发生的,其中涉及富电子取代基的 1,2-位移。
PROCESS FOR CREATING CARBON-CARBON BONDS USING CARBONYL COMPOUNDS
申请人:CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N. R.S.)
公开号:US20150166464A1
公开(公告)日:2015-06-18
The present invention concerns a process for preparing a compound of formula (I) by reaction between a compound of formula (II) and a compound of formula (III) in the presence of a copper-containing catalyst, a ligand and base. The invention also concerns the implementing of this process for the preparation of building blocks to prepare molecules of interest in particular in the pharmaceutical, agro-chemical fields, etc.
No activation needed: The first efficient method for direct α‐arylation of non‐activated or non‐protected family of enolizable ketones with simple aryliodides employs a catalytic copper system. The method shows potential for the easy and step‐economical synthesis of tamoxifen, the most commonly administrated drug for the management of breast cancer. R, R′, R′′ = electron‐donating or electron‐withdrawing
Low-Valent Titanium Promoted Self-Coupling of <i>N</i>-Acylbenzotriazoles and Their Cross-Coupling with Diarylketones
作者:Xiaoxia Wang、Yongmin Zhang
DOI:10.1081/scc-120021983
日期:2003.1.8
The self-coupling reaction of N-acylbenzotriazoles and their cross-coupling with diarylketones promoted by Sm/TiCl4 system were investigated. Self-coupling reaction could afford alpha-diketones or benzoins in moderate yields, while the cross-coupling reaction gave 1,2,2-triaryl ethanones in good yields.
PROCEDE DE CREATION DE LIAISONS CARBONE-CARBONE A PARTIR DE COMPOSES CARBONYLES
申请人:Centre National de la Recherche Scientifique
(CNRS)