Oxidative Palladium(II) Catalysis: A Highly Efficient and Chemoselective Cross-Coupling Method for Carbon−Carbon Bond Formation under Base-Free and Nitrogenous-Ligand Conditions
作者:Kyung Soo Yoo、Cheol Hwan Yoon、Kyung Woon Jung
DOI:10.1021/ja063710z
日期:2006.12.1
For instance, oxidativepalladium(II) catalysis is effective with highly substituted alkenes and cyclic alkenes, which are known to be incompatible with other known catalytic conditions. Most examined reactions progressed smoothly to completion at low temperatures and in short times. These interesting results provide mechanistic insights and utilities for a new paradigm of palladium catalytic cycles
我们在此报告了氧促进 Pd(II) 催化的通用和温和协议的开发,导致烯基和芳基硼化合物与各种烯烃的选择性交叉偶联。与大多数交叉偶联反应不同,这种新方法即使在没有碱基的情况下也能很好地工作,因此避免了不需要的同源偶联。包括二甲基菲咯啉在内的基于氮的配体增强了反应性,并提供了一种高效的立体选择性方法来克服具有挑战性的底物限制。例如,氧化钯 (II) 催化对于高度取代的烯烃和环烯烃是有效的,已知它们与其他已知的催化条件不相容。大多数检查的反应在低温和短时间内顺利完成。
Synthetic and Mechanistic Studies of a Versatile Heteroaryl Thioether Directing Group for Pd(II) Catalysis
作者:Andrew M. Romine、Kin S. Yang、Malkanthi K. Karunananda、Jason S. Chen、Keary M. Engle
DOI:10.1021/acscatal.9b01471
日期:2019.9.6
an arene C–H olefination method was also successfully developed. Reaction progress kinetic analysis provides insights into the role of the directing group in each reaction, which is supplemented with computational data for the oxidative Heck reaction. Furthermore, this (BT)S directing group can be transformed into a number of synthetically useful functional groups, including a sulfone for Julia olefination
Palladium/Tris(
<i>tert</i>
‐butyl)phosphine‐Catalyzed Suzuki Cross‐ Couplings in the Presence of Water
作者:Sha Lou、Gregory C. Fu
DOI:10.1002/adsc.201000267
日期:2010.10.9
Dipalladiumtris(dibenzylideneacetone)/tris(tert-butyl)phosphonium tetrafluoroborate/potassium fluoride dihydrate [Pd2(dba)3/[HP(t-Bu)3]BF4/KF⋅2 H2O] serves as a mild, robust, and user-friendly method for the efficient Suzuki cross-coupling of a diverse array of aryl and heteroaryl halides with aryl- and heteroarylboronic acids.
reaction for the first time. A catalyst-free three-component synthesis of α-aryl- and α-alkenylglycine derivatives starting from glyoxylicacid, sulfonamides, and aryl- or alkenylboronic acids is described. This operationally simple method tolerates a broad range of functional groups and enables the generation of a wide array of α-aminoacids. Sulfonamides were utilized as amine component in the classic
Synthesis and structure–activity relationship of disubstituted benzamides as a novel class of antimalarial agents
作者:Katsuhiko Mitachi、Yandira G. Salinas、Michele Connelly、Nicholas Jensen、Taotao Ling、Fatima Rivas
DOI:10.1016/j.bmcl.2012.05.124
日期:2012.7
identified a novel series of disubstituted benzamide compounds with significant activity against malaria strains 3D7 and K1. These compounds represent a new antimalarial molecular scaffold exemplified by compound 1, which demonstrated EC50 values of 60 and 430 nM against strains 3D7 and K1, respectively. Herein we report our findings on the efficient synthesis, structure–activityrelationships, and biological