In the present review, we discuss recent progress in the field of C-Z bond formation reactions (Z = S, Se, Te) catalyzed by transition metals. Two complementary methodologies are considered─catalytic cross-coupling reactions and catalytic addition reactions. The development of advanced catalytic systems is aimed at improved catalyst efficiency, reduced catalyst loading, better cost efficiency, environmental concerns, and higher selectivity and yields. The important rise of research efforts in sustainability and green chemistry areas is critically assessed. The paramount role of mechanistic studies in the development of a new generation of catalytic systems is addressed, and the key achievements, problems, and challenges are summarized for this field.

Transition-Metal-Catalyzed C-S, C-Se, and C-Te Bond Formations via Cross-Coupling and Atom-Economic Addition Reactions. Achievements and Challenges.

Nickel N-heterocyclic carbene complexes and their utility in homogeneous catalysis

Copper-oxide-catalyzed cross-coupling reaction is a well-known strategy in heterogeneous catalysis. A large number of applications have been developed, and catalytic cycles have been proposed based on the involvement of the copper oxide surface. In the present work, we have demonstrated that copper(I) and copper(II) oxides served as precursors in the coupling reaction between thiols and aryl halides, while catalytically active species were formed upon unusual leaching from the oxide surface. A powerful cryo-SEM technique has been utilized to characterize the solution-state catalytic system by electron microscopy. A series of different experimental methods were used to reveal the key role of copper thiolate intermediates in the studied catalytic reaction. The present study shows an example of leaching from a metal oxide surface, where the leaching process involved the formation of a metal thiolate and the release of water. A new synthetic approach was developed, and many functionalized sulfides were synthe...

Nature of the Copper-Oxide-Mediated C–S Cross-Coupling Reaction: Leaching of Catalytically Active Species from the Metal Oxide Surface

Conjugated micro-mesoporous poly(aniline)s for ultrafast Hg (II) capture

Metal-organic frameworks (MOFs) consist of metal ions or clusters coordinated with organic ligands such as imidazolate or carboxylate ligands. Owing to MOFs’ high porosity and surface area, researchers have applied...

Metal-Organic Framework Composites from Mechanochemical Process

Phase control of ZIF-7 nanoparticles via mechanochemical synthesis.

8-Hydroxyquinolin- N -oxide was identified as a superior ligand for CuI-catalyzed C–S coupling reactions of aryl iodides with thiols to afford the corresponding thioethers in excellent yield. The method shows excellent chemoselectivity and high functional-group tolerance in both coupling partners.

8-Hydroxyquinolin-N-oxide-Promoted Copper-Catalyzed C–S Cross-Coupling of Thiols with Aryl Iodides

The invention relates to a cyclic peptide compound and a preparation method thereof as well as a medicinal composition and application thereof. Specifically, the cyclic peptide compound has a structure as shown by the formula (I). The compound of the formula (I), and an isomer, a raceme, a pharmaceutically acceptable salt, a crystalline hydrate, a solvate or a mixture thereof of the compound have application of preparing a medicament for preventing or treating mammal diseases related to histone deacetylase dysregulation.

Cyclic peptide compound and preparation method thereof as well as medicinal composition and application thereof

The present invention relates to a cyclic peptide compound, and a preparation method, pharmaceutical composition and use thereof. In particular, the cyclic peptide compound of the present invention has a structure as shown by general formula (I). The compound of general formula (I), and isomers, racemates, pharmaceutically acceptable salts, crystalline hydrates, solvates or mixtures thereof have a use in the preparation of medicaments for preventing or treating mammalian diseases associated with histone deacetylase dysregulations.

Cyclic peptide compound, and preparation method, pharmaceutical composition and use thereof

The invention relates to a cyclic peptide compound, a preparation method, a pharmaceutical composition and a purpose Specifically, the cyclic peptide compound has a structure shown by the general formula (I) The compound of the general formula (I), an isomer thereof, a raceme thereof, pharmaceutically acceptable salts, crystalline hydrates, solvate or their mixtures have purposes of preparing drugs for preventing or treating mammalian diseases related to histone deacetylase dysregulation

Cyclic peptide compound, preparation method, pharmaceutical composition and purpose

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