Practical C−H Functionalization of Quinones with Boronic Acids
作者:Yuta Fujiwara、Victoriano Domingo、Ian B. Seiple、Ryan Gianatassio、Matthew Del Bel、Phil S. Baran
DOI:10.1021/ja111152z
日期:2011.3.16
quinones with several boronic acids has been developed. This scalable reaction proceeds readily at room temperature in an open flask using inexpensive reagents: catalytic silver(I) nitrate in the presence of a persulfate co-oxidant. The scope with respect to quinones is broad, with a variety of alkyl- and arylboronicacids undergoing efficient cross-coupling. The mechanism is presumed to proceed through
[EN] ANTITUMOR CYCLOPENTANPHTHOQUINONE AND CYCLOPENTANTHRAQUINONE DERIVATIVES<br/>[FR] DERIVES DE CYCLOPENTANAPHTOQUINONE ET DE CYCLOPENTANTHRAQUINONE A ACTION ANTITUMORALE
申请人:SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH
公开号:WO1994020094A1
公开(公告)日:1994-09-15
(EN) The present invention provides compounds having structure (I) or having structure (II). The present invention also provides a pharmaceutical composition containing the compounds, methods of synthesizing the compounds, as well as methods of inhibiting growth of tumor cells and of treating a subject having a disease characterized by the proliferation of tumor cells.(FR) L'invention se rapporte à des composés ayant la structure (I) ou la structure (II). L'invention décrit également une composition pharmaceutique contenant ces composés, des procédés de synthèse de ces composés, ainsi que des procédés pour inhiber la croissance de cellules tumorales et pour traiter un sujet atteint d'une maladie se caractérisant par une prolifération de cellules tumorales.
Catalytic asymmetric [2+2] cycloaddition between quinones and fulvenes and a subsequent stereoselective isomerization to 2,3-dihydrobenzofurans
The catalytic enantioselective [2+2] cycloaddition between quinones and fulvenes was achieved, for the first time, by the use of a chiral copper(II) complex catalyst. The transformation afforded a series of enantiomerically enriched [6,4,5]-tricyclic cyclobutane derivatives in good yields with excellent regio- and stereoselectivities. Furthermore, the [2+2] adducts could be easily converted into formal
Palladium-Catalyzed Direct CH Functionalization of Benzoquinone
作者:Sarah E. Walker、James A. Jordan-Hore、David G. Johnson、Stuart A. Macgregor、Ai-Lan Lee
DOI:10.1002/anie.201408054
日期:2014.12.8
A direct Pd‐catalyzed CHfunctionalization of benzoquinone (BQ) can be controlled to give either mono‐ or disubstituted BQ, including the installation of two different groups in a one‐pot procedure. BQ can now be directly functionalized with aryl, heteroaryl, cycloalkyl, and cycloalkene groups and, moreover, the reaction is conducted in environmentally benign water or acetone as solvents.
可以控制直接 Pd 催化的苯醌 (BQ) 的C H 官能化以得到单取代或双取代的 BQ,包括在一锅法中安装两个不同的基团。BQ 现在可以直接用芳基、杂芳基、环烷基和环烯基官能化,而且,反应在环境友好的水或丙酮作为溶剂中进行。