Dr. Alexander Antonov

Dr. Alexander Antonov

Group Leader
Regensburg University
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 …

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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 …

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Dr. Valeriia Mulloyarova

Sterically Facilitated Intramolecular Nucleophilic NMe2 Group Substitution in the Synthesis of Fused Isoxazoles: Theoretical Study

The influence of steric repulsion between the NMe2 group and a second ortho-(peri-)substituent in the series of 1-dimethylaminonaphthalene and N,N-dimethylanilene ortho-oximes on …

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Dr. Alexander Antonov

Symmetry/Asymmetry of the NHN Hydrogen Bond in Protonated 1,8-Bis(dimethylamino)naphthalene

Experimental and theoretical results are presented based on vibrational spectra and motional dynamics of 1,8-bis(dimethylamino)naphthalene (DMAN) and its protonated forms (DMANH+ …

p.-piekos
Aggregation behaviour of lithionaphthalenes in solution: experimental and theoretical study featured image

Aggregation behaviour of lithionaphthalenes in solution: experimental and theoretical study

The aggregation of a series of mono- and dilithionaphthalenes in THF solutions in the presence of tetramethylethylenediamine (TMEDA) and pentamethyldiethylenetriamine (PMDTA) was …

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Dr. Alexander Antonov
How strong is hydrogen bonding to the amide nitrogen? featured image

How strong is hydrogen bonding to the amide nitrogen?

The protonation of the carboxamide nitrogen atom is an essential part of in vivo and in vitro processes (cis-trans isomerization, amides hydrolysis etc). This phenomenon is well …

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Dr. Vladimir Mikshiev
Unusual behaviour of the spin–spin coupling constant 1JCH upon formation of CH⋯X hydrogen bond featured image

Unusual behaviour of the spin–spin coupling constant 1JCH upon formation of CH⋯X hydrogen bond

One-bond coupling constants 1JXY are usually used as a measure of the corresponding X⋯Y interatomic distances. However, the physical nature of this correlation is not well …

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Prof. Elena Tupikina
Sterically facilitated meta-lithiation of arenes, containing electron donating groups featured image

Sterically facilitated meta-lithiation of arenes, containing electron donating groups

The influence of the bulky trimethylsilyl substituent on the selectivity of metallation of dimethylaniline, anisole and 1-dimethylaminonaphthalene is studied. The neighboring SiMe3 …

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Dr. Alexander Antonov
Proton-induced fluorescence in modified quino[7,8-h]quinolines: dual sensing for protons and π-donors featured image

Proton-induced fluorescence in modified quino[7,8-h]quinolines: dual sensing for protons and π-donors

The synthesis, as well as spectral, structural and photoluminescence properties of dipyrido[3,2-e:2′,3′-h]acenaphthene 5 and quinazolino[7,8-h]quinazolines 6 as representatives of …

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Prof. Alexander Pozharskii
Non-covalent Li···H interaction in the synthesis of peri-disubstituted naphthalene proton sponges featured image

Non-covalent Li···H interaction in the synthesis of peri-disubstituted naphthalene proton sponges

Noncovalent Li···H interaction was utilised as a tool for the second lithiation of 4-lithio-1,8-bis(dimethylamino)naphthalene with n-BuLi in the presence of TMEDA in hexane. …

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Dr. Alexander Antonov