Discovery and SAR study of novel dihydroquinoline containing glucocorticoid receptor ligands
摘要:
We report the discovery of a novel class of glucocorticoid receptor (GR) ligands based on 1,2-dihydroquinoline molecular scaffold. The compounds exhibit good GR binding affinity and selectivity profile against other nuclear hormone receptors. (C) 2005 Elsevier Ltd. All rights reserved.
Heterogeneous Pd/C-catalyzed ligand-free Suzuki–Miyaura coupling reaction using aryl boronic esters
摘要:
Heterogeneous Pd/C-catalyzed Suzuki-Miyaura cross-coupling reaction of aryl boronic esters with aryl bromides was successfully carried out in aqueous media at room temperature without the use of a ligand such as phosphine derivatives. (C) 2007 Elsevier Ltd. All rights reserved.
functions (sulfonic acid moieties) (Pd/CM) was developed. It was used as a catalyst for hydrogenation and ligand-freecross-coupling reactions, such as the Suzuki–Miyaura, Mizoroki–Heck, and copper- and amine-free Sonogashira-type reactions, together with a palladium catalyst supported on monolithic polymer (Pd/AM) bearing basic anion exchange functions (ammonium salt moieties), which has been in practical
Sublimable bis( β -iminoenolate)palladium(II) complexes and their application as catalysts in Suzuki-Miyaura reactions
作者:Mi Jin Kim、Myung Jin Jung、Yeong Joon Kim、Ha Kyoung Sung、Ju Young Lee、Sung Jin Ham、Chan Pil Park
DOI:10.1016/j.tetlet.2018.06.051
日期:2018.8
The Pd(II) complexes strongly chelated by two β-iminoenolate ligands were easily synthesized in only two steps, and purified based on their sublimable and highly stable property. The Pd(II) complexes anchored on a silica surface showed good catalytic activity in Suzuki-Miyaurareactions (up to 99% yield with 0.05 mol% catalyst). They tolerated a wide range of temperature (rt∼110 °C) and various solvents
Aromatic substitution. Part XXII. Polarity of aryl radicals
作者:R. A. Abramovitch、O. A. Koleoso
DOI:10.1039/j29690000779
日期:——
The rates of substitution of anisole relative to benzene by arylradicals generated from diazonium tetrafluoroborates and pyridine in homogeneous solution have been measured and follow, qualitatively, the order expected on the basis of the theory of polarised arylradicals. The substituent in the radical affects its permanent polarisation. Apparent contradictions in the literature concerning the behaviour
已经测量了在均匀溶液中苯甲醚相对于苯的取代度,该取代度是由四氟硼酸重氮鎓和吡啶生成的芳基产生的,并且定性地遵循了基于极化芳基自由基理论的预期顺序。自由基中的取代基会影响其永久极化。文献中有关苯甲醚作为底物的行为和对甲氧基苯基自由基的极性的明显矛盾通过使用这种自由基源得以解决。如所预期的,对甲氧基苯基比苯基更具亲核性。间甲氧基苯基不比苯基更具亲电性,并提出了一个解释。p甲苯基是多个亲核比预期的基础上σ p -Me。
Heterogeneous Catalysis by Covalent Organic Frameworks (COF): Pd(OAc)<sub>2</sub>@COF-300 in Cross-Coupling Reactions
作者:Raoni S. B. Gonçalves、Alline B. V. de Oliveira、Haryadylla C. Sindra、Bráulio S. Archanjo、Martín E. Mendoza、Leonardo S. A. Carneiro、Camilla D. Buarque、Pierre M. Esteves
DOI:10.1002/cctc.201500926
日期:2016.2
imine‐linked, crystalline, and microporouscovalent organic framework, modified by coordination of Pd(OAc)2 to its walls, afforded a hybrid material, Pd(OAc)2@COF‐300, which was used as an efficient heterogeneous catalyst for cross‐coupling reactions. This material showed excellent catalytic activity for the phosphine‐free Suzuki–Miyaura, Heck, and Sonogashira cross‐coupling reactions with low palladium loadings