a derivative that could serve as a cocaine inhibitor. A compound that blocks binding of the cocaine analog carboxyfluorotropane (CFT), allows dopamineuptake and exhibits low side effects could serve as a good candidate for that purpose. All analogs were tested for the extent to which they inhibit CFT binding, dopamineuptake and n-methyl scopolamine (NMS) binding. Several structure-function relationships
Redox-Neutral ortho Functionalization of Aryl Boroxines via Palladium/Norbornene Cooperative Catalysis
作者:Renhe Li、Feipeng Liu、Guangbin Dong
DOI:10.1016/j.chempr.2019.02.005
日期:2019.4
cooperative catalysis, also known as the Catellani reaction, has become an increasingly useful method for site-selective arenefunctionalization; however, certain constraints still exist because of its intrinsic mechanistic pathway. Herein, we report a redox-neutral ortho functionalization of aryl boroxines via Pd/NBE catalysis. An electrophile, such as carboxylic acid anhydrides or O-benzoyl hydroxylamines,
Friedel–Crafts acylation reaction using carboxylic acids as acylating agents
作者:Masato Kawamura、Dong-Mei Cui、Shigeru Shimada
DOI:10.1016/j.tet.2006.07.031
日期:2006.9
Dehydrative Friedel–Craftsacylationreaction of aromatic compounds with carboxylic acids as acylating agents was investigated in the presence of Lewis acid- or Brønsted acid-catalyst. Various metal triflates and bis(trifluoromethanesulfonyl)amides showed catalytic activity at high temperature, among which Eu(NTf2)3 proved to be the most effective and efficiently catalyzed the acylationreaction of alkyl-
Herein, we report that merging palladium catalysis with hydrogen atom transfer (HAT) photocatalysis enabled direct arylations and alkenylations of aldehyde C–H bonds, facilitating visible light-catalyzed construction of a variety of ketones. Tetrabutylammonium decatungstate and anthraquinone were found to act as synergistic HAT photocatalysts. Density functional theory calculations suggested a Pd0–PdII–PdIII–PdI–Pd0
在本文中,我们报道了钯催化与氢原子转移(HAT)光催化的合并使醛C–H键的直接芳基化和烯基化成为可能,从而促进了可见光催化的各种酮的构建。发现四丁基癸酸铵和蒽醌可作为HAT的协同光催化剂。密度泛函理论计算表明,Pd 0 -Pd II -Pd III -Pd I -Pd 0途径,并揭示了在存在KHCO 3的情况下,Pd 0催化剂和光催化剂的再生同时发生。这种再生具有低能垒,促进了钯催化循环与光催化循环的有效耦合。本文报道的工作表明,HAT光催化在钯催化的交叉偶联和CH官能化反应中的进一步应用有望成功。
Friedel–Crafts Acylation of Arenes Catalyzed by Bromopentacarbonylrhenium(I)
作者:Hiroyuki Kusama、Koichi Narasaka
DOI:10.1246/bcsj.68.2379
日期:1995.8
The intermolecular Friedel–Crafts acylation of aromatic compounds (such as toluene, m-xylene, and anisole) with various acid chlorides proceeds by using a catalytic amount of bromopentacarbonylrhen...