Alexander Antonov

Outstanding work!

17.08.2025 10:48 — 👍 3    🔁 0    💬 0    📌 0

Beautiful structure!

17.08.2025 10:47 — 👍 0    🔁 0    💬 0    📌 0

Absolutely magnificent lecture. Insight on how to properly apply computations to polar organometallics!

10.07.2025 10:59 — 👍 4    🔁 2    💬 0    📌 0

Great pleasure to participate in #eucomc2025 in beautiful Bern. Many thanks to @evaheviagroup.bsky.social and Martin Albrecht for excellent organization and the opportunity to share our #organolithium chemistry.

10.07.2025 08:12 — 👍 14    🔁 3    💬 0    📌 0

Day 4 at #eucomc2025 starts with a feast on #alkalimetalchemistry and the unique perspectives that #Cs offers in catalysis with first #plenary speaker @remglasgow.bsky.social @unistrathclyde.bsky.social #group1metals #theheavierthebetter

09.07.2025 07:28 — 👍 26    🔁 5    💬 0    📌 1

Opening the conference #EuCOMC2025 @laurelschafer.bsky.social on the intricacies of #hydroaminoalkylation chemistry

06.07.2025 15:05 — 👍 21    🔁 6    💬 0    📌 1

Stunning second #plenary talk #eucomc2025 by #DannyBroere @utrechtuniversity.bsky.social on the power of #bimetallic #cooperation in #catalysis

07.07.2025 08:02 — 👍 18    🔁 4    💬 0    📌 0

Today at the age of 86 my PhD supervisor Prof. Dr. Alexander Pozharskii passed away.
Rest in peace dear friend, thank you for everything, your work will not be forgotten, and your legacy will live on forever in your students, and in the students of your students.

10.05.2025 12:28 — 👍 2    🔁 0    💬 0    📌 0

Hydrogen-Bond-Assisted Chalcogen Transfer between Phosphine Selenides and Arsine Oxides The Brønsted acid catalysis is widely regarded as one of the most effective methods for activating inert substrates and enabling unique reactivity. In this work, we introduce the first example of H-bond-assisted chalcogen exchange between arsine oxides and phosphine selenides under mild conditions, providing a powerful approach to the synthesis of arsine selenides. The reaction proceeds successfully in both protic and aprotic solvents and is accelerated by the presence of any nonaqueous acid. This newly discovered reaction is tested for various arsine oxides R3AsO (R = Ph, Et, nBu, iPr) and phosphine selenides R3PSe (R = Ph, Me, Et, tBu) and overall demonstrates high conversion, although the use of reagents with bulky substituents significantly hinders its efficiency. The reaction mechanism involves the formation of a four-membered cyclic transition state, which requires overcoming steric and electrostatic repulsion, as well as significant distortion of the reagents’ tetrahedral geometry. Hydrogen bonding with the As═O fragment helps to reduce electrostatic repulsion between the P═Se and As═O groups, making the formation of the cyclic intermediate more favorable.

Check our new paper in @pubs.acs.org Inorganic Chemistry on how hydrogen bonding facilitates chalcogen exchange between arsine oxides and phosphine selenides.
pubs.acs.org/doi/10.1021/...
in Memoriam Prof. Dr. Lina M. Epstein (A.N.Nesmeyanov Institute of Organoelement Compounds RAS)

06.05.2025 08:25 — 👍 3    🔁 1    💬 0    📌 0

Very happy to have the opportunity to share our research at the Chemiedozententagung 2025

18.03.2025 14:35 — 👍 3    🔁 0    💬 0    📌 0

A Precise Synthetic Toolbox: H-Bond-Assisted Quadruple Reactivity of o-Dimethylaminoaryloximes Non-covalent interactions are a highly promising tool for the development of transition-metal-free chemospecific synthetic transformations. Here, we demonstrate the implementation of non-covalent interactions as a simple, precise, and flexible synthetic toolbox, allowing the controlled transformation of o-dimethylaminoaryloximes into nitriles and hard-to-reach nitrogen heterocycles under mild conditions. This diverse reactivity is activated via hydrogen bonding and facilitated via the “buttressing effect” of the substituents next to the NMe2 group. All transformations require only simple and easily available acids and solvents, which generally provide precise control over the direction of the reaction, allowing the selective synthesis of nitriles, fused pyrazoles, isoxazoles, and pyrroles.

Our new paper in @acs.org JOC on the Quadruple Reactivity of ortho-Dimethylaminoaryloximes. Check how non-covalent interactions allow precise control over reaction pathway with the usage of simple acids and solvents.
pubs.acs.org/doi/10.1021/...

13.03.2025 21:51 — 👍 3    🔁 0    💬 1    📌 0

Join us in Bern this summer in @eucomc2025.bsky.social it is going to be so much fun!👇#EUCOMC2025

06.02.2025 05:59 — 👍 20    🔁 5    💬 0    📌 0

Cover Feature: Flipping the Metalation of 4‐Dimethylaminopyridine: Steric Repulsion versus London Dispersion Attraction (Chem. Eur. J. 6/2025) Dispersion interactions serve as a driving force for ortho-lithiation: A significantly large and bulky substituent, rich in C−H bonds, attached to the pyridine nitrogen of 4-dimethylaminopyridine, st...

Very happy to see our paper on the cover! Go dispersion interactions!
@chemistryeurope.bsky.social
chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/...

27.01.2025 19:15 — 👍 9    🔁 3    💬 1    📌 0

Can't wait to attend this wonderful meeting of organometallic chemists! Have you already registered? If not, it is time to be an early bird!

11.01.2025 17:28 — 👍 5    🔁 3    💬 0    📌 0

Please add me as well

28.11.2024 08:51 — 👍 2    🔁 0    💬 0    📌 0

Flipping the Metalation of 4‐Dimethylaminopyridine: Steric Repulsion versus London Dispersion Attraction We demonstrate the effective utilization of steric interactions for flipping the lithiation of 4-dimethylaminopyridine (DMAP). Introduction of a Me3Si substituent to the position 1 of DMAP or simple ...

Check our new paper, where we demonstrate that dispersion interaction can serve as directing force for lithiation. New principle of DOM effect.
chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/...

#organometallic #dispersion #NCIs
@chemistryeurope.bsky.social

28.11.2024 08:04 — 👍 2    🔁 1    💬 1    📌 0