G. I. Nikishin

Bio: G. I. Nikishin is an academic researcher from Russian Academy of Sciences. The author has contributed to research in topics: Radical & Homolysis. The author has an hindex of 11, co-authored 280 publications receiving 540 citations.

Reaction of peroxydisuccinic acid with salts of metals of variable valence

Abstract: A study was made of the effect of the salts FeSO4, MnSO4, and CoSO4 on the decomposition of peroxydisuccinic acid in aqueous medium. Both the composition and the yield of the reaction products are determined to a large degree by the nature of the metal ion.

Free radical synthesis of 2-alkoxytetrahydrofurans

Abstract: A new method is presented for obtaining 2-alkoxy tetrahydrofurans by reacting alcohols withα, β- unsaturated aldehydes in the presence of a peroxide.

Generation and reactions of 3-carboxy- and 3-carbalkoxypropyl radicals

Abstract: 1. The oxidative decarboxylation of glutaric acid and its monoesters (methyl, ethyl, isopropyl, and benzyl) under the influence of Na2S2O8, in the presence of AgNO3, led to the generation of the ROOC (CH2)2 CH2 radicals, where R = H, CH3, C2H5, i-C3H7 or C6H5CH2. 2. The principal transformation products of these radicals are butyric acid and alkyl butyrates, and also γ-butyrolactone. The yield of the lactone relative to butyric acid and its ester increases as follows in the R series: H > i-C3H7 > C2H5 > CH3 ∼ C6H5CH2.

I and i

Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

Cobalt-Catalyzed C―H Activation

Abstract: Catalytic C–H activation has emerged as a powerful tool for sustainable syntheses. In the recent years, notable success was achieved with the development of cobalt-catalyzed C–H functionalizations with either in situ generated or single-component cobalt-complexes under mild reaction conditions. Herein, recent progress in the field of organometallic cobalt-catalyzed C–H activation is reviewed until November 2015.

Catalytic Enantioselective Transformations Involving C-H Bond Cleavage by Transition-Metal Complexes.

Abstract: The development of new methods for the direct functionalization of unactivated C–H bonds is ushering in a paradigm shift in the field of retrosynthetic analysis. In particular, the catalytic enantioselective functionalization of C–H bonds represents a highly atom- and step-economic approach toward the generation of structural complexity. However, as a result of their ubiquity and low reactivity, controlling both the chemo- and stereoselectivity of such processes constitutes a significant challenge. Herein we comprehensively review all asymmetric transition-metal-catalyzed methodologies that are believed to proceed via an inner-sphere-type mechanism, with an emphasis on the nature of stereochemistry generation. Our analysis serves to document the considerable and rapid progress within in the field, while also highlighting limitations of current methods.