Nickel-mediated C(sp2)-H amidation in synthesis of secondary sulfonamides via sulfonyl azides as amino source

Studies of the Catalytic Activity of New Nickel(II) Compounds Containing Pyridine Carboxylic Acids Ligands in Oligomerization Processes of Selected Olefins and Cyclohexyl Isocyanide

Catalysts based on nickel(II) ions, due to their high reactivity and easiness of ligand modification, are among the most widely used catalytic systems in the world, with applications in a variety of catalytic processes. Herein, research that leads to the synthesis of new nickel(II) complex compounds containing nicotinic and isonicotinic acid ligands is presented. Their catalytic properties have been studied in oligomerization processes of olefins and isocyanides and the obtained oligomers are subjected to qualitative and quantitative analysis to determine their physicochemical properties. The catalytic activity values achieved in the oligomerization of olefins only in a few cases reach above 100 g mmol-1 h-1 bar-1. However, the newly obtained catalytic systems show very high (99%) and moderate (36%) efficiency in the oligomerization of cyclohexyl isocyanide. The conducted studies provide knowledge about the influence of modification of the main ligand and reaction conditions on the values of catalytic activity, process yields, as well as physicochemical properties of the obtained oligomers. Furthermore, it is possible to determine which of the processes carried out using the newly synthesized catalytic systems achieve better results and in which process they should be further used and developed.

Recent developments in polymer chemistry, medicinal chemistry and electro-optics using Ni and Pd-based catalytic systems

Catalysis is the fastest and continuously growing field in chemistry. A key component of this process is catalytic systems, which result in increased reaction rates and yields, as well as the ability to tailor the properties of products to the final application. With the development of catalysis, the requirements for catalysts used in these processes have also grown rapidly. Modern catalytic materials should overcome the challenges posed by the modern world of chemistry. They should be durable, and stable, have good catalytic properties, and allow catalytic processes to be carried out under mild and environmentally friendly conditions. In this article, we provide an overview of recent reports on the use of catalytic systems based on nickel and palladium ions in catalytic reactions, leading to functional materials used in the fields of medicinal chemistry, polymer chemistry and electro-optical materials chemistry. Research on the optimization and modification of existing synthetic methods, reports on the synthesis of new functional materials, and articles on new, more efficient catalytic systems that overcome the drawbacks of existing catalysts are described. The presented article reviews current knowledge, providing the newest information from the world of catalysis and synthesis of advanced functional materials, presenting potential directions for further development in these fields.

Recent advances in metal directed C-H amidation/amination using sulfonyl azides and phosphoryl azides

Transition metal-catalyzed C-N bond formation reactions have gained popularity as a method for selectively transforming common C-H bonds into N-functionalized molecules. This approach is particularly useful for synthesizing aminated molecules, which require aminating reagents and amidated building blocks. Over the past two decades, significant advancements have been achieved in transition-metal-catalyzed C-H functionalization, with organic azides emerging as promising amino sources and internal oxidants. This review focuses on recent developments in utilizing sulfonyl and phosphoryl azides as building blocks for directed intra- and intermolecular C-H functionalization reactions. Specifically, it discusses methods for synthesizing sulfonamidates and phosphoramidates using sulfonyl and phosphoryl azides, respectively. The article highlights the potential of C-H functionalization reactions with organic azides for efficiently and sustainably synthesizing N-functionalized molecules, providing valuable insights into the latest advancements in this field.

Pd-Catalyzed Aryl C-H Amination with Diaziridinone

This work describes an efficient Pd-catalyzed ortho-C-H amination of N-(quinolin-8-yl)benzamides with di-t-butyldiaziridinone, providing a variety of anthranilic amides in good yields. The reaction likely involves the formation of a pallada(II)heterocycle via aryl C-H activation and subsequent amination with di-t-butyldiaziridinone.

On the application of 3d metals for C-H activation toward bioactive compounds: The key step for the synthesis of silver bullets

Several valuable biologically active molecules can be obtained through C-H activation processes. However, the use of expensive and not readily accessible catalysts complicates the process of pharmacological application of these compounds. A plausible way to overcome this issue is developing and using cheaper, more accessible, and equally effective catalysts. First-row transition (3d) metals have shown to be important catalysts in this matter. This review summarizes the use of 3d metal catalysts in C-H activation processes to obtain potentially (or proved) biologically active compounds.