Prof. Elena Tupikina

Prof. Elena Tupikina

Saint Petersburg University
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
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
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 …

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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 …

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Artyom Yakubenko

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
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
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