The synthesis of aryl fluorides has been studied intensively because of the importance of aryl fluorides in pharmaceuticals, agrochemicals, and materials. The stability, reactivity, and biological properties of aryl fluorides can be distinct from those of the corresponding arenes. Methods for the synthesis of aryl fluorides, however, are limited. We report the conversion of a diverse set of aryl iodides to the corresponding aryl fluorides. This reaction occurs with a cationic copper reagent and silver fluoride. Preliminary results suggest this reaction is enabled by a facile reductive elimination from a cationic arylcopper(III) fluoride.
Palladium(II)-Catalyzed Oxidative Homo- and Cross-Coupling of Aryl <i>ortho</i>-sp<sup>2</sup> C–H Bonds of Anilides at Room Temperature
作者:Chong Mei、Wenjun Lu
DOI:10.1021/acs.joc.8b00120
日期:2018.4.20
The preparation of secondary 2,2′-bisanilides has been successfully achieved through an oxidative coupling of aryl ortho-sp2 C–H bonds of anilides in the presence of catalytic Pd(OAc)2 and K2S2O8 as an oxidant in MsOH/CF3CO2H (TFA) at roomtemperature (25 °C). The aromatic rings of anilides substituted by various electron-donating or electron-withdrawing groups are tolerant in these coupling reactions
通过在催化性Pd(OAc)2和K 2 S 2 O 8作为氧化剂的存在下,通过对苯甲酸酯的芳基邻-sp 2 C-H键进行氧化偶联,成功地完成了2,2'-双苯胺的制备。在室温(25°C)下在MsOH / CF 3 CO 2 H(TFA)中溶解。在这些偶联反应中,被各种给电子或吸电子基团取代的苯甲酸酯的芳环是可容忍的。
Oxidative C−H/C−H Cross-Coupling Reactions between <i>N</i>
-Acylanilines and Benzamides Enabled by a Cp*-Free RhCl<sub>3</sub>
/TFA Catalytic System
作者:Yang Shi、Luoqiang Zhang、Jingbo Lan、Min Zhang、Fulin Zhou、Wenlong Wei、Jingsong You
DOI:10.1002/anie.201804528
日期:2018.7.16
oxidative C−H/C−H cross‐coupling reaction between an N‐acylaniline and a benzamide has been accomplished for the first time. This process constitutes a step‐economic and highly efficient pathway to 2‐amino‐2′‐carboxybiaryl scaffolds from readily available substrates. A Cp*‐free RhCl3/TFA catalytic system was developed to replace the [Cp*RhCl2]2/AgSbF6 system generally used in oxidative C−H/C−H cross‐coupling
An Annulative Synthetic Strategy for Building Triphenylene Frameworks by Multiple C−H Bond Activations
作者:Bijoy P. Mathew、Hyun Ji Yang、Joohee Kim、Jae Bin Lee、Yun-Tae Kim、Sungmin Lee、Chang Young Lee、Wonyoung Choe、Kyungjae Myung、Jang-Ung Park、Sung You Hong
DOI:10.1002/anie.201700405
日期:2017.4.24
C−H activation is a versatile tool for appending aryl groups to aromatic systems. However, heavy demands on multiple catalytic cycle operations and site‐selectivity have limited its use for graphene segment synthesis. A Pd‐catal‐ yzed one‐step synthesis of functionalized triphenylene frameworks is disclosed, which proceeds by 2‐ or 4‐fold C−H arylation of unactivated benzene derivatives. A Pd2(dibenzylideneacetone)3
5,5-disubstituted-1,5-dihydro-4,1-benzoxazepin-2 (3H)-ones useful as HIV
申请人:Dupont Pharmaceuticals Company
公开号:US06140320A1
公开(公告)日:2000-10-31
The present invention relates to benzoxazepinones of formula I: ##STR1## or stereoisomeric forms or mixtures, or pharmaceutically acceptable salt forms thereof, which are useful as inhibitors of HIV reverse transcriptase, and to pharmaceutical compositions and diagnostic kits comprising the same and methods of using the same for treating viral infection or as an assay standard or reagent.
The present invention is a compound and pharmaceutical composition comprising a compound of formula (I):
wherein R1 is a 4-(lower) alkyl-imidazol-1-yl or a 4,5-di(lower) alkyl-imidazol-1-yl group, R2 is a hydrogen atom or a lower alkyl group, and R3 is a fluorenyl group. The compound of formula (I) includes pharmaceutically acceptable salts: The compound of formula (I) and salts thereof have 5-HT antagonism activity.