35 Result(s)
within
A. Yu. Bykov
Chemistry
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Article
Development of Approaches for Obtaining Fluorine-Containing Derivatives of Boronated Amidines Based on the closo-Dodecaborate Anion
The reactivity of model amidines with general structure (NBu4)[B12H11NHC(CH3)HNCH(CH2OTos)2] under nucleophilic fluorination conditions has been investigated in the study. The obtained products have been characte...
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Article
Reaction of the [B10H11]– Anion with Phenanthrene-1,10-Dicarbonitriles
In this study, the reaction of the [B10H11]– anion with phenanthrene-9,10-dicarbonitriles containing various substituents has been studied. A series of new mono- and disubstituted nitrile derivatives of the closo
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Article
Synthesis of New Iminium Derivatives of Sulphonio-сloso-Decaborate Anion (Bu4N)[2-B10H9SC(NH2)R] (R = –CH3, –CH2CH3, –CH(CH3)2, –Ph, –PhCH3)
New iminium derivatives of the sulfonio-closo-decaborate anion have been obtained in the form of tetrabutylammonium salts (Bu4N)[2-B10H9SC(NH2)R] (R = –CH3, –CH2CH3, –CH(CH3)2, –Ph, –PhCH3), in which the iminium ...
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Article
New Method for Synthesis of Substituted 1-Amidine-closo-decaborates [1-B10H9NH=C(R1)NHR2] (R1 = Me, iPr, Ph; R2 = nBu, Bn)
The process of nucleophilic substitution of the phenyliodonium substituent in the [1-B10H9IPh]– anion with primary amines in organic nitriles has been studied. It has been shown that the reaction proceeds with th...
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Article
Nucleophilic Addition of Aliphatic Diamines NH2(CH2)nNH2 (n = 6, 9) to Nitrilium Derivatives of the closo-Decaborate Anion [2-B10H9NCR]– (R = CH3, C2H5, nC3H7)
The reaction of a number of nitrilium derivatives of the closo-decaborate anion with hexamethylene- and nonamethylenediamine has been studied. It has been shown that the process proceeds with the functionalizatio...
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Article
Study of Crystal Structures of the [B10Cl10]2– Anion with Imidazolium Cations
A new method for the synthesis of imidazolium salts of the perchlorinated closo-decaborate anion (RMIM)2[B10Cl10] (R = H, n-Et, n-Bu, n-C8H17) has been proposed. The synthesis of these compounds can be carried ou...
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Article
Study of Hydrolysis of Nitrile Derivatives of closo-Dodecaborate Anion (Et4N)[B12H11N≡C–R] (R = Me, Et, nPr, iPr)
The reaction of nitrile derivatives of closo-dodecaborate anion (Et4N)[B12H11N≡C–R] (R = Me, Et, nPr, iPr) with water has yielded a series of (Et4N)[B12H11NH=C(OH)–R] iminols. It has been demonstrated that the hy...
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Article
Synthesis and Structure of Trisubstituted closo-Decaborane [B10H7(1-IPh)(6(7),10-NHOCCH3)]: Specifics of Interaction between the [2-B10H9NH=C(OH)CH3]– Ion and PhI(OAc)2
The preparation of trisubstituted closo-decaboranes by reacting 1,2-boroxazoles with PhI(OAc)2 was studied. The process could be implemented in a one-pot variant proceeding from borylated iminol. The reaction pro...
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Article
Open AccessErratum to: New Methods for Preparation of the Monofluorosubstituted Derivative of the closo-Borate Anion [2-B10H9F]2–, Its Properties, and Analysis of Its Reactivity
An Erratum to this paper has been published: https://doi.org/10.1134/S0036023622330014
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Article
New Method for Synthesis of N-Borylated Amino Acids Based on closo-Decaborate and closo-Dodecaborate Anions
Methods for the direct synthesis of N-borylated amino acids have been developed. The approach used is based on the interaction of free amino acids and nitrile derivatives of the closo-decaborate and closo-dodecab...
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Article
Nucleophilic Addition of Polyfunctional Amines to Acetonitrile Derivatives of closo-Borate Anions [BnHn – 1NCCH3]– (n = 10, 12)
Methods for the preparation of new amidine-closo-borates based on the processes of nucleophilic addition of bifunctional amines containing free functional groups –NH2, –SH to nitrile derivatives of the closo-deca...
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Article
Open AccessNew Methods for Preparation of the Monofluorosubstituted Derivative of the closo-Borate Anion [2-B10H9F]2–, Its Properties, and Analysis of Its Reactivity
New methods for the preparation of a monofluoro-substituted derivative of the closo-decaborate anion [2-B10H9F]2– have been developed. Various synthetic strategies have been used, where Bu4NF, Me4NF, KF/18-crown-...
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Article
Study of Protonation of Ethyloxy Derivative of closo-Decaborate anion [B10H9OC2H5]2–
At present, the chemistry of protonated complexes of closo-borate anions is being actively studied. Interest is dictated by the possibility of using these complexes for further directed functionalization. In this...
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Article
Open AccessHydride Intercalation of Lithium into Ni3GaTe2
In order to expand the methods of lithium intercalation into layered multicomponent matrices, the reaction of lithium hydride with layered telluride Ni3GaTe2 through the stage of formation of mechanocomposites ha...
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Article
Study of Protonation of the Monocarbonyl Derivative of the closo-Decaborate Anion [B10H9CO]–
Currently, the chemistry of carbonyl derivatives of the closo-borate anions is actively develo**. It is of great interest to obtain protonated complexes of these types of clusters for further directed functiona...
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Article
Open AccessSynthesis of Derivatives of closo-Dodecaborate Anion Based on Amino Acid Esters
This work proposes a new method for the synthesis of N-borylated amino acids based on nucleophilic substitution reactions in the [B12H11IPh]– anion. Esters of glycine and L-phenylalanine were used as nucleophiles...
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Article
Chlorination of Sulfonium Derivatives of closo-Decaborate Anion with Carboxyl-Containing Substituents
The reaction of sulfonium closo-decaborate derivatives containing carboxyl groups with sulfuryl chloride SO2Cl2 as a halogenating agent was studied. The reaction gave fully halogenated derivatives of the closo-de...
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Article
Open AccessNew Method for Synthesis of Substituted N-Borylated Dipeptides Based on Acetonitrile Derivative of the closo-Dodecaborate Anion
A new multistage synthesis of the N-borylated dipeptide B12-PheGlyOH has been proposed. The approach is based on the reaction of nucleophilic addition of amino acid derivatives to the [B12H11NCCH3]– anion. The pr...
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Article
Synthesis and Physicochemical Properties of C-Borylated Esters and Amides Based on the closo-Dodecaborate Anion
The nucleophilic addition of the monocarbonyl derivative of the closo-dodecaborate anion [B12H11CO]– with N- and O-nucleophiles has been studied. This process proceeds under mild conditions in high yield. Not onl...
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Article
Synthesis and Physicochemical Properties of C-Borylated Esters Based on the closo-Decaborate Anion
The interaction of the monocarbonyl derivative of the closo-decaborate anion [2-B10H9CO]– with O-nucleophiles has been considered. It has been found that primary, secondary, and tertiary alcohols can enter the ad...
