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.
With the assistance of a practical directing group (COAQ), the first catalytic protocol for the palladium-catalyzed C(sp3)–H monoarylation of methanol has been developed, offering an invaluable synthesis means to establish extensive derivatives of crucial arylmethanol functional fragments. Furthermore, the gram-scale reaction, broad substrate scope, excellent functional group compatibility, and even
Pd/Cu‐Catalyzed Defluorinative Carbonylative Coupling of Aryl Iodides and
<i>gem</i>
‐Difluoroalkenes: Efficient Synthesis of α‐Fluorochalcones
作者:Fu‐Peng Wu、Yang Yuan、Jiawang Liu、Xiao‐Feng Wu
DOI:10.1002/anie.202017365
日期:2021.4.12
An unprecedented and challenging defluorinative carbonylation was achieved. Enabled by a Pd/Cu cooperative catalyst system, the first example of defluorinative carbonylativecoupling has been established. With gem‐difluoroalkenes and aryl iodides as the substrates, this methodology offers flexible and facile access to privileged α‐fluorochalcones under mild reaction conditions in moderate‐to‐excellent
作者:Shentong Xie、Yuqing Yin、Ya Wang、Jiannan Wang、Xiaoqian He、Ruopeng Bai、Renyi Shi
DOI:10.1039/d2gc04427g
日期:——
direct convergent synthesis to target molecules from easily-available and cheap substrates has been developed. A wide range of alkyl aryl ketones are accessed from alkylhalides, aryl iodides and propyl chloroformate under mild conditions, avoiding the use of over-stoichiometric reductants, excess quantities of additives and activators, and superstoichiometric CO gas or metal carbonyl complexes which are
电还原交叉亲电子偶联作为构建具有挑战性的 C-C 键的一种强大、绿色和高效的方法,越来越受到有机化学家的关注。以前的大部分工作都集中在直接的双亲电试剂交叉偶联上。在这项工作中,开发了镍催化的三亲电试剂电还原交叉亲电试剂偶联,它可以从易于获得且廉价的底物中直接聚合合成目标分子。在温和条件下,从烷基卤化物、芳基碘化物和氯甲酸丙酯中获得多种烷基芳基酮,避免使用超化学计量的还原剂、过量的添加剂和活化剂,以及超化学计量的 CO 气体或有毒的金属羰基络合物,对环境不友好,处理起来不方便。放大实验表明,与传统合成相比,电合成具有良好的可扩展性。通过增加电流可以实现高化学选择性。机理研究表明,从阴极到 Ni 催化剂的电子转移速率在该协议中起着至关重要的作用。我们的方法在交叉亲电子偶联中展示了一种新型的电化学选择性控制策略。
Nickel-Catalyzed Highly Selective Reductive Carbonylation Using Oxalyl Chloride as the Carbonyl Source
作者:Jiannan Wang、Yuqing Yin、Xiaoqian He、Qiao-Lian Duan、Ruopeng Bai、Hai-Wei Shi、Renyi Shi
DOI:10.1021/acscatal.3c01090
日期:2023.6.16
available chemical, is one of the most versatile organic reagents used in chemical reactions. In this work, high chemoselectivity can be achieved with a 1:1:1 ratio of Ar–I to alkyl-I to oxalyl chloride. A wide range of alkyl aryl ketones which present an important class of molecules in synthetic and medicinal chemistry are accessed from alkyl halides, aryl iodides, under mild conditions. Primary and secondary
申请人:GLAXOSMITHKLINE INTELLECTUAL PROPERTY DEVELOPMENT LIMITED
公开号:US10407407B2
公开(公告)日:2019-09-10
Compounds of formula (I): wherein X, Y, R1 and R3-R11 are as herein defined, and salts thereof are PAD4 inhibitors and may be useful in the treatment of various disorders, for example rheumatoid arthritis, vasculitis, systemic lupus erythematosus, ulcerative colitis, cancer, cystic fibrosis, asthma, cutaneous lupus erythematosis, and psoriasis.