Cycloaddition of atmospheric CO to epoxides under solvent-free conditions: a straightforward route to carbonates by green chemistry metrics.

The conversion of carbon dioxide (CO) into value-added organic compounds has received more and more attention over recent years, not only because this gas is one of the major anthropogenic greenhouse gases, but also because it has been regarded as an abundant, inexpensive, nontoxic, nonflammable, and renewable one-carbon (C1) resource. Along these lines, the synthesis of five-membered cyclic carbonates employing CO as a safe alternative to toxic reagents such as phosgene or its derivatives is of great interest because of their wide range of applications in organic synthesis. However, most of CO incorporation reactions into carbonates are carried out in toxic and non-recyclable organic solvents.

Recent advances in the application of nano-catalysts for Hiyama cross-coupling reactions.

This mini-review highlights the recent developments in the field of metal nanoparticle (NP) catalyzed Hiyama cross-coupling reactions. Most of the nanocatalysts outlined here allow convenient and green synthetic pathways for the construction of carbon-carbon bonds in water and fluoride-free conditions. Literature has been surveyed from 2005 to February 2018.

A DFT study on nanocones, nanotubes (4,0), nanosheets and fullerene C as anodes in Mg-ion batteries.

In this article, we studied the interactions between Mg atom and Mg ion and four nanostructures, including a nanocone, nanotube (4,0), nanosheet, and C nanocage, to obtain the cell voltages () for Mg-ion batteries (MIBs). Total energy, geometry optimization, frontier molecular orbital (FMO) and density of states (DOS) analyses have been performed using the ωB97XD level of theory and the 6-31G(d) basis set. The DFT calculations clarified that the changes in energy adsorption between Mg ion and the nanostructures, , are in the order tube > cone > sheet > cage.

Cross-Dehydrogenative C-H/S-H Coupling Reactions.

Carbon-sulfur bond formation represents a key step in the synthesis of thioethers, which are a common structural motif in many pharmaceutically compounds. The direct cross-dehydrogenative coupling of C-H/S-H bonds has become a powerful tool for C-S bond formation. As these coupling reactions avoid pre-functionalization of the starting materials, they are more atom-economical, practical, and environmentally friendly than traditional cross-coupling reactions.

Arylhydrazines: novel and versatile electrophilic partners in cross-coupling reactions.

Arylhydrazines are extremely valuable compounds in organic chemistry that are widely used for the synthesis of a variety of biologically active molecules such as indoles, indazoles, pyrazoles, aryltriazoles, β-lactams and quinazolines. These compounds have also been widely utilized as arylation agents in oxidative cross-coupling reactions. In this review, we will highlight the most important explorations and developments in the carbon-carbon and carbon-heteroatom (nitrogen, phosphorus, sulfur, and selenium) cross-coupling of arylhydrazines.

Advancements in six-membered cyclic carbonate (1,3-dioxan-2-one) synthesis utilizing carbon dioxide as a C1 source.

This review article surveys literature methods for the synthesis of six-membered cyclic carbonates using various substrates in the presence of CO with special emphasis on the mechanistic aspects of the reactions. We have classified these reactions based on the type of starting material.