Anionic Boron- and Carbon-Based Hetero-Diradicaloids Spanned by a p-Phenylene Bridge

A Maiti, F Zhang, I Krummenacher… - Journal of the …, 2021 - ACS Publications
Herein we report the synthesis and characterization of anionic boron-and carbon-based
Kekulé diradicaloids spanned by ap-phenylene bridge. In contrast to Thiele's hydrocarbon, a …

A crystalline radical cation derived from Thiele's hydrocarbon with redox range beyond 1 V

YK Loh, P Vasko, C McManus, A Heilmann… - Nature …, 2021 - nature.com
Thiele's hydrocarbon occupies a central role as an open-shell platform for new organic
materials, however little is known about its redox behaviour. While recent synthetic …

Disclosing Cyclic (Alkyl)(Amino) Carbenes as One‐Electron Reductants: Synthesis of Acyclic (Amino)(Aryl) Carbene‐Based Kekulé Diradicaloids

A Maiti, BJ Elvers, S Bera, F Lindl… - … A European Journal, 2022 - Wiley Online Library
Herein, we disclose cyclic (alkyl)(amino) carbenes (CAACs) to be one‐electron reductants
under the formation of a transient radical cation as indicated by EPR spectroscopy. The …

Carbodicarbenes and striking redox transitions of their conjugate acids: influence of NHC versus CAAC as donor substituents

R Dolai, R Kumar, BJ Elvers, PK Pal… - … A European Journal, 2023 - Wiley Online Library
Herein, a new type of carbodicarbene (CDC) comprising two different classes of carbenes is
reported; NHC and CAAC as donor substituents and compare the molecular structure and …

Cross-Coupling of NHC/CAAC-Based Carbodicarbene: Synthesis of Electron-Deficient Diradicaloids

V Malhotra, BJ Elvers, R Dolai… - Journal of the …, 2024 - ACS Publications
Herein, we report nickel (0)-catalyzed cross-coupling reactions of NHC/CAAC-based
carbodicarbene (NHC= N-heterocyclic carbene and CAAC= cyclic (alkyl)(amino) carbene) …

Reduction of 2-H-substituted pyrrolinium cations: the carbon–carbon single bond in air stable 2, 2′-bipyrrolidines as a two-electron-source

MK Nayak, BJ Elvers, D Mandal, A Das… - Chemical …, 2023 - pubs.rsc.org
Reduction of 2-H-substituted pyrrolinium cations via initially formed secondary radicals
results in either dimerisation or H-abstracted products, while the outcome depends on the N …

Interception and Synthetic Application of Diradical and Diene Forms of Dual‐Nature Azabicyclic o‐Quinodimethanes Generated by 6π‐Azaelectrocyclization

M Shankar, DJ Lee… - Angewandte Chemie …, 2024 - Wiley Online Library
We demonstrate that 2‐alkenylarylaldimines and ketimines undergo thermal 6π‐
azaelectrocyclization to generate a wide range of azabicyclic o‐quinodimethanes (o …

α,α′-Diamino-p-tetrafluoroquinodimethane: Stability of One- and Two-Electron Oxidized Species and Fixation of Molecular Oxygen

A Mahata, N Chrysochos, I Krummenacher… - The Journal of …, 2021 - ACS Publications
Herein, we report the synthesis, characterization, and reactivity of α, α′-diamino-p-
tetrafluoroquinodimethane, ap-tetrafluorophenylene-bridged monosubstituted carbene …

Diamidocarbene-Based Thiele and Tschitschibabin Hydrocarbons: Carbonyl Functionalized Kekulé Diradicaloids

A Maiti, S Sobottka, S Chandra, D Jana… - The Journal of …, 2021 - ACS Publications
Herein, we report diamidocarbene (DAC)-based Thiele and Tschitschibabin hydrocarbons,
diradicaloids that contain four carbonyl/amido functional groups. The impact of two different …

Highly Stable Self‐Regenerating Organic Multi‐Redox Systems derived from Bicyclic (Alkyl)(amino) carbenes (BICAACs)

A Das, S Saha, S Maji, P Sarkar, A Jose… - … A European Journal, 2024 - Wiley Online Library
An extended class of organic multi‐redox systems was derived from bicyclic (alkyl) amino
carbenes (BICAACs). The highly‐conjugated system undergoes a total of 4 redox events …