Current Organic Synthesis - Volume 14, Issue 3, 2017

Background: In comparison with these platinum group metal catalysts, supported nano gold catalysts have emerged as a new type of catalysts highly active at low temperature and selective for the aerobic oxidation of alcohols. But catalytic data and detailed characterizations of the Au-Ag bimetal catalytic system are not available up to date. Objective: This work is aimed to develop bimetallic AuAg-based heterogeneous cat Read More

Background: A new approach for the simulation of branched hydrocarbons synthesis on platinum catalysts is provided. The kinetic and thermodynamic laws of low-temperature pentane-hexane fraction isomerization were established and studied. According to the performed research, development of hydrocarbons conversion mechanism on Pt/SO4-ZrO2 catalyst was provided. Objective: The objective of this Read More

Background: Starting from the mid-20th century, synthetic detergents produced from petrochemical raw materials have become more and more widely used and in many cases have better cleaning characteristics than natural soap. Objective: The purpose of this work was to reveal physical and chemical regularities of C9-C14 hydrocarbons transformations and to increase the selectivity of the steps of synthesis of highly biod Read More

Background: The work performed constituted thermodynamic kinetic analysis of the chemical transformations of C13-C40 hydrocarbons during the catalytic cracking process. Objective: The objective of the work was to increase the yield of light fractions during the catalytic cracking of C13-C40 hydrocarbons. Method: Laboratory research to determine the structural grouped and individual composition of feedstock and products Read More

Background: Physical-chemical regularities of diesel fuel catalytic hydrodewaxing process were studied. Objective: The objective of this work is to develop mathematical model of hydrodewaxing for numerical studying patterns of the process. Methods: The method of mathematical modelling was used in the current research. Results: In summer regime, when the required target product is summer grade diesel fuel, the tempe Read More

Background: The foam materials have a number of interesting properties which may be used in processes of high temperature alcohol partial oxidation to aldehydes and ketones. Foam materials have uniform cellular structure with isotropy of mechanical and fluidodynamic properties: an average diameter of the elementary cell - 0.5-5.0m; porosity - 80-98%; volume density - 0.1-0.5 g/cm3. Objective: The aim of the prese Read More

Background: Materials containing supported gold nanoparticles are considered as the most favorable for liquid-phase alcohol oxidation. Our previous studies showed that MgAl2O4 spinel can be an effective support for gold catalysts in liquid-phase alcohol oxidation. Objective: The aim of the present paper a comparative study of gold supported on different metal oxides (Al2O3, MgO, MgAl2O4 spinel) in liquid phase oxidati Read More

Background: Ring Opening Metathesis Polymerization (ROMP) can provide a wide range of possibilities for polymers and copolymers synthesis. Norbornene and its derivatives can serve as monomers for the synthesis of highly molecular mass polymers with widely varying structure. Objective: In this paper a new polymers based on dimethyl ether norbornenedicarboxylic acids were prepared by ring-opening metathes Read More

Background: Double metal phosphates, such as silver- and copper-zirconium phosphates, are considered promising materials for alcohol transformation to high-value chemicals (aldehydes, esters, olefins) due to high functional properties. Objective: The work was aimed to synthesize AgZr2(PO4)3 and Zr2.25(PO4)3 and study the influence of reduction conditions on their chemical and phase composition as well as catal Read More

Background: Virgaureoside A is a component of Solidago virgaurea L. (Goldenrod ordinary) which is a well-known remedy in folk Chinese medicine. However, the isolation and, consequently, pharmacological testing of this diglycoside is difficult due to its low content. Objective: To perform the first total synthesis of the diglycoside Virgaureoside A and apply the developed synthetic approach to the synthesis of analogues compo Read More

Heterocycles are widely spread in natural products and in many bioactive compounds, as well as in a variety of fine chemicals. Synthesis through catalysis is always an advantageous strategy and today it is difficult to consider an approach to a target molecule without the inclusion of a catalytic step. Moreover, it is indeed almost a required characteristic for all the synthetic transformations in line with the principles of green che Read More

This review deals with the utility of hydrazonoyl halides in synthesis of bioactive heterocylic compounds such as pyrazoles, triazoles and pyrimidines which showed wide range of biological activities. We discussed here the synthesis of heterocyclic ring system derived from hydrazonoyl halides and their significant biological properties as for example, antitumor, antimicrobial, analgesic, anti-inflammatory, anti-H1N1 and anti HCV activity.

Organic synthesis efficiency can take considerable advantage from microwave heating. Compared to conventional heating, it allows to improve the reactions speed and yield through an energy-efficient, clean, and easy-to-use processing tool. Transition-metal catalyzed cross-coupling reactions and in particular the Suzuki- Miyaura cross-coupling is powerful and widely used tool for the formation of carbon-carbon bonds. Crossco Read More

Examples of reactions and physicochemical processes influenced by preferential solvation run in binary liquid solvent mixtures have been reviewed. The catalytic role of solutions of inorganic salts has been discussed. Different methods of classification of pure solvents and binary solvent mixtures have been presented. We have also discussed studies on the preferential solvation of neutral and ionic species. The nature of influence Read More