Chemical reactivity from an activation strain perspective

P Vermeeren, TA Hamlin, FM Bickelhaupt - Chemical Communications, 2021 - pubs.rsc.org
Chemical reactions are ubiquitous in the universe, they are at the core of life, and they are
essential for industrial processes. The drive for a deep understanding of how something …

The Pauli repulsion-lowering concept in catalysis

TA Hamlin, FM Bickelhaupt… - Accounts of Chemical …, 2021 - ACS Publications
Conspectus Organic chemistry has undoubtedly had a profound impact on humanity. Day in
and day out, we find ourselves constantly surrounded by organic compounds …

Dual Ligand Enabled Nondirected C–H Chalcogenation of Arenes and Heteroarenes

SK Sinha, S Panja, J Grover, PS Hazra… - Journal of the …, 2022 - ACS Publications
Chalcogenide motifs are present as principal moieties in a vast array of natural products and
complex molecules. Till date, the construction of these chalcogen motifs has been restricted …

How Lewis Acids Catalyze Diels–Alder Reactions

P Vermeeren, TA Hamlin, I Fernández… - Angewandte …, 2020 - Wiley Online Library
The Lewis acid (LA)‐catalyzed Diels–Alder reaction between isoprene and methyl acrylate
was investigated quantum chemically using a combined density functional theory and …

Catalytic Enantioselective Intramolecular Oxa-Michael Reaction to α, β-Unsaturated Esters and Amides

G Su, M Formica, K Yamazaki, TA Hamlin… - Journal of the …, 2023 - ACS Publications
A bifunctional iminophosphorane (BIMP)-catalyzed, enantioselective intramolecular oxa-
Michael reaction of alcohols to tethered, low electrophilicity Michael acceptors is described …

Origin of the α‐Effect in SN2 Reactions

T Hansen, P Vermeeren… - Angewandte Chemie …, 2021 - Wiley Online Library
The α‐effect is a term used to explain the dramatically enhanced reactivity of α‐nucleophiles
(R− Y− X:−) compared to their parent normal nucleophile (R− X:−) by deviating from the …

Atroposelective Access to 1, 3‐Oxazepine‐Containing Bridged Biaryls via Carbene‐Catalyzed Desymmetrization of Imines

X Yang, L Wei, Y Wu, L Zhou, X Zhang… - Angewandte Chemie …, 2023 - Wiley Online Library
We disclose herein an atroposelective synthesis of novel bridged biaryls containing medium‐
sized rings via N‐heterocyclic carbene organocatalysis. The reaction starts with addition of …

Recovery of rubidium from brine sources utilizing diverse separation technologies

SK Sharma, J Guo, AK An, G Naidu, BJ Deka - Desalination, 2023 - Elsevier
A rare alkali metal, rubidium (Rb) has significant economic value and emerging industrial
applications including biomedical research, solar cells, atomic clocks, and electronics …

Photoexcitation of Distinct Divalent Palladium Complexes in Cross‐Coupling Amination Under Air

R Kancherla, K Muralirajan, S Dutta… - Angewandte Chemie …, 2024 - Wiley Online Library
The development of metal complexes that function as both photocatalyst and cross‐coupling
catalyst remains a challenging research topic. So far, progress has been shown in palladium …

Electrophilic reactivities of cyclic enones and α, β-unsaturated lactones

RJ Mayer, PWA Allihn, N Hampel, P Mayer… - Chemical …, 2021 - pubs.rsc.org
The reactivities of cyclic enones and α, β-unsaturated lactones were characterized by
following the kinetics of their reactions with colored carbon-centered reference nucleophiles …