Current Organic Chemistry - Volume 17, Issue 3, 2013

The set up of sustainable procedures of synthesis requires, inter alia, a careful reconsideration of the role of the solvent and of the catalyst. In the last years, room temperature ionic liquids (RTILs) and N-heterocyclic carbenes (NHCs) have drawn considerable attention as new rising generation of green solvents and organocatalysts. A simple cathodic reduction of C2-H imidazolium based ionic liquids yields, in mild conditions, a R Read More

The application of ionic liquids revealed a new dimension in many fields of chemistry. In the particular field of hydrogen storage system ionic liquids find application in several different ways. After a short introduction about the matter of hydrogen storage and its advantages and challenges, the different approaches of ionic liquid application in this field are presented. The different approaches can be classified into the application Read More

Biomass transformations would certainly play an important role in the partial or total substitution of petroleum-based products, either in production of materials and fuels. However, big challenges must still be addressed before sustainable processes from economic, energetic, environmental and social point of view would be available. In this manuscript are reviewed different attempts to develop new and efficient industrial proces Read More

In this review update we provide a critical analysis of recent results concerning the use of ionic liquids (ILs) as viable, effective, and environmental friendly media for the Heck reactions (HR). The examples selected illustrate the multifaceted action of ILs as nanoparticles stabilizers, promoters of ligand-assisted HR, promoters of phosphine-free HR, solvent for the Heck-Matsuda reactions employing arenediazonium salts, in the deh Read More

This review provides an overview of the use of mass spectrometry (MS) and its various ionization techniques and an evaluation of their suitability to investigate structures and physico-chemical properties of ionic liquids (IL) and the types of information that can be obtained from such experiments. We will focus on most representative and comprehensive work, and on the work that we are been performing in an collab Read More

The current manuscript describes state-of-the-art research for Nuclear Magnetic Resonance (NMR) as an analytical tool to explore catalyzed reactions carried out in ionic liquids (ILs) as the media. Due to its versatility and informative data, NMR has offered valuable information for studies on how ILs affect catalytic reactions performed in these media. The article covers representative developments and recent progress wit Read More

Organic semiconducting materials have been a subject of intensive studies recently, fueled by both academic interest and a series of potential technological applications. Their molecular structure characterized by extended π-electron systems can be easily tuned by chemical substitution. The most promising organic semiconducting materials combine a number of critical properties, including processiblity, stability, conjugat Read More

Aldehydes were respectively converted to the corresponding 2-imidazolines in good yields by the reaction with ethylenediamine using iron (III) phosphate on water under reflux condition. Furthermore nitriles were converted to the corresponding 2-imidazolines under solvent-free condition at 100 °C. Utilizing of heterogeneous and recyclable catalyst, water as a solvent and solvent-free condition is the best medium from a gree Read More

Suzuki-Miyaura cross-coupling of free (NH) indazoles is described. The reactions are carried out under microwave irradiation using various 3-bromoindazoles and boronic acids. Different reaction conditions were investigated and the best results were obtained using Pd(PPh3)4 and Cs2CO3 in a mixture of 1,4-dioxane/EtOH/H2O at 140 °C under microwave irradiation.

This article prepared a variety of novel singlet oxygen photosensitizers containing different numbers of bromine atoms, which could be divided into two groups (G1, G2) according to parent chemical structural characteristics. Effects of numbers of substituted bromine atoms on one- and two-photon optical properties of singlet oxygen photosensitizers were surveyed experimentally and theoretically. One-photon fluorescence e Read More