Current Organic Chemistry - Volume 13, Issue 2, 2009

Polyphenols are a very diverse class of compounds. In the present volume the emphasis is on Schiff bases and azo compounds containing one or more hydroxy group. Such polyphenols have many interesting properties and uses. Many Schiff bases with hydroxy groups have a hydroxy group in ortho position to the imine function resulting in intra molecular hydrogen bonding and possibly tautomerism. This can happen both in th Read More

Aza-derivatives of phenols such as Schiff bases and hydrazones are an important and interesting group of chemical compounds. They exhibit a number of biological activities and play an important role in the regulation of many biochemical processes. Due to these properties, these compounds are potentialy useful for the design and production of novel anticancer, antimalaria, antivirus and antimicrobial drugs. The p Read More

A brief overview of computational chemistry methods for the design of Schiff base derivatives with certain materials properties is presented. The problem of azo - hydrazo or imino enol - enaminone tautomerism, especially calculations on its influence on dying properties/dye stability of hydroxy azo dyes is described. Design strategies for nonlinear optic materials based on Schiff bases and their metal complexes, guided Read More

This review is composed of several chapters dealing with research on the o-hydroxy aryl Schiff bases. The introduction comments on modern problems of quasi-aromatic formation which participates in o-hydroxy aryl Schiff bases as well as some potential applications of compounds of this type. The main part of the paper describes quantummechanical calculations of potential curves, electron-topological parameters depen Read More

The review covers the use of chemical shifts, isotope effects on chemical shifts and coupling constants in the description of Schiff bases. o-Hydroxy Schiff bases are often tautomeric and special attention is devoted to this feature. Nuclei in question are 1H, 13C, 15N, 19F and 17O. As well primary as secondary isotope effects are treated. Deuterium isotope effects on 13C and 15N chemical shifts are treated in detail and the theoret Read More