Table of contents

Theoretical studies of the dynamics and kinetics of proton and hydrogen atom transfer processes occupy a special place in the kinetics of chemical reactions. The transition state theory is often inapplicable to these processes due to substantial quantum effects. Different approaches to the description of these reactions are discussed and compared. Calculations for a number of particular condensed-phase reactions involving proton or hydrogen atom transfer are analysed. Data of calculations of potential energy surfaces for the considered systems and the results of experimental kinetic and spectroscopic studies are presented.

Main types of crystal structures with different atomic defects (point, volume, planar and linear) are considered using inorganic compounds as an example. The review presents the results of composite analysis of such real structures. Their symmetry, ordering, ways of description, nomenclature and the possibility of the diagnostics from diffraction patterns are discussed. The results of studies provide evidence that polymorphism is typical of real crystal structures.

Data on rearrangements of monoterpenoids with the bicyclo[4.1.0]heptane skeleton occurring by ionic, radical and concerted mechanisms are generalised and analysed.

The review surveys the state-of-the-art in the methodology of multicomponent cascade heterocyclisation and its prospects as applied to the targeted synthesis of polyfunctional pyridines and their hydrogenated and fused analogues.

The published data on the methods for the synthesis of furazans fused to six-membered heterocycles with two heteroatoms in positions 1 and 4, their reactivities and practical applications are considered and systematised.