Dr. Alexander Antonov

Dr. Alexander Antonov

Group Leader
Regensburg University
«Buttressing Effect» in the Halogen-Lithium Exchange in ortho-Bromo-N,N-dimethylanilines and Related Naphthalenes featured image

«Buttressing Effect» in the Halogen-Lithium Exchange in ortho-Bromo-N,N-dimethylanilines and Related Naphthalenes

Non-covalent interactions such as coordination of an organolithium reagent by a directing group and steric repulsion of substituents strongly affect the halogen-lithium exchange …

avatar
Stepan Meshalkin
The role of conjugation in the halogen-lithium exchange: lithiation of 4,6,7,9-tetrabromo-1,3-dimethyl-2,3-dihydro-1H-perimidine featured image

The role of conjugation in the halogen-lithium exchange: lithiation of 4,6,7,9-tetrabromo-1,3-dimethyl-2,3-dihydro-1H-perimidine

The first case of successful suppression of the coordination of a lithium atom with a dialkylamino group by the effective conjugation of the latter with the aromatic core has been …

avatar
Artyom Yakubenko
Spontaneous Cyclization of peri-Diiminonaphthalenes Leading to the Formation of Benzo[de]isoquinolines and Stable Benzo[de]isoquinoliniums featured image

Spontaneous Cyclization of peri-Diiminonaphthalenes Leading to the Formation of Benzo[de]isoquinolines and Stable Benzo[de]isoquinoliniums

The interaction of peri-dilithionaphthalenes with organic cyanides was studied. Instead of the expected peri-diimines, the reaction leads to the formation of three types of …

avatar
Dmitrii Tolochenko
Organometallic Synthesis of 2,3,6,7-Tetrasubstituted 1,8-Bis(dimethylamino)naphthalenes for Investigation of the Double Buttressing Effect in Proton Sponges featured image

Organometallic Synthesis of 2,3,6,7-Tetrasubstituted 1,8-Bis(dimethylamino)naphthalenes for Investigation of the Double Buttressing Effect in Proton Sponges

The first case of successful suppression of the coordination of a lithium atom with a dialkylamino group by the effective conjugation of the latter with the aromatic core has been …

a.-v.-marchenko
Organoboron Derivatives of 1,8-Bis(dimethylamino)naphthalene: Synthesis, Structure, Stability, and Reactivity featured image

Organoboron Derivatives of 1,8-Bis(dimethylamino)naphthalene: Synthesis, Structure, Stability, and Reactivity

A series of ortho-, meta-, and para-boronic acids and their pinacol esters of 1,8-bis(dimethylamino)naphthalene (DMAN), including the very first …

avatar
Victor Bardakov
Choice of computational protocol for carbon-lithium spin–spin coupling constants 1JCLi featured image

Choice of computational protocol for carbon-lithium spin–spin coupling constants 1JCLi

In this work, we tested various computational schemes for calculations of 1JCLi constants with a high accuracy. On the example of six organolithium reagents (phenyllithium monomer …

v.-v.-karpov
peri-Interactions in 1,8-bis(dimethylamino)naphthalene ortho-ketimine cations facilitate [1,5]-hydride shift: selective synthesis of 1,2,3,4-tetrahydrobenzo[h]quinazolines featured image

peri-Interactions in 1,8-bis(dimethylamino)naphthalene ortho-ketimine cations facilitate [1,5]-hydride shift: selective synthesis of 1,2,3,4-tetrahydrobenzo[h]quinazolines

Selective heterocyclization leading to 1,2,3,4-tetrahydrobenzo[h]quinazolines from ortho-ketimines of 1,8-bis(dimethylamino)naphthalene (DmanIms) under acid catalysis has been …

avatar
Dr. Vladimir Mikshiev
Self-association of diphenylpnictoginic acids in solution and solid state: covalent vs. hydrogen bonding featured image

Self-association of diphenylpnictoginic acids in solution and solid state: covalent vs. hydrogen bonding

Triphenylpnictogens were oxidized to access diphenylpnictioginic acids Ph2XOOH (X = P, As, Sb, Bi). It was shown that oxidation with chloramine-T does not lead to the cleavage of a …

avatar
Artyom Yakubenko
Lithiation of 2,4,5,7-tetrabromo-1,8-bis(dimethylamino)naphthalene:  peculiarities of directing groups' effects and the possibility of polymetallation featured image

Lithiation of 2,4,5,7-tetrabromo-1,8-bis(dimethylamino)naphthalene: peculiarities of directing groups' effects and the possibility of polymetallation

The bromine-lithium exchange sequence upon interaction of 2,4,5,7-tetrabromo-1,8-bis(dimethylamino)naphthalene with n-BuLi was studied. Experimental results were explained by means …

avatar
Artyom Yakubenko
Solid-State and Solution-State Self-Association of Dimethylarsinic Acid: IR, NMR and Theoretical Study featured image

Solid-State and Solution-State Self-Association of Dimethylarsinic Acid: IR, NMR and Theoretical Study

The structure of dimethylarsinic acid (Me2AsOOH, DMA) in crystal and in solution in aprotic medium was studied by X-ray, spectroscopic (IR, NMR and Raman) and quantum chemical …

avatar
Dr. Valeriia Mulloyarova