Results 121 to 130 of about 17,390 (287)

On the Structural Evolution Mechanism of Lignin‐Derived Hard Carbon for Refining Sodium‐Ion Storage

Electron, EarlyView.
The lignin‐derived hard carbons with different microstructures were prepared under different carbonization temperature (600°C–1600°C) and carbonization time (0–6 h). The correlation between the local structure of all hard carbons and sodium‐ion storage performance was statistically analyzed. The optimized hard carbon anode has high‐rate performance and
Lei Zhong, Shuhua Hao, Junjun Yao, Fangbao Fu, Xihong Zu, Xueqing Qiu, Wenli Zhang   +6 more
wiley   +1 more source

Tandem dehydrogenation-olefination-decarboxylation of cycloalkyl carboxylic acids via multifold C–H activation

Nature Communications
Dehydrogenation chemistry has long been established as a fundamental aspect of organic synthesis, commonly encountered in carbonyl compounds. Transition metal catalysis revolutionized it, with strategies like transfer-dehydrogenation, single electron ...
Tanay Pal, Premananda Ghosh, Minhajul Islam, Srimanta Guin, Suman Maji, Suparna Dutta, Jayabrata Das, Haibo Ge, Debabrata Maiti   +8 more
doaj   +1 more source

Two-electron transfer stabilized by excited-state aromatization

Nature Communications, 2019
Excited state aromaticity gives rise to unique photophysical properties which may aid the design of functional photoactive materials. Here, the authors spectroscopically characterize an acceptor-donor-acceptor system featuring a two-electron transfer ...
Jinseok Kim, Juwon Oh, Seongchul Park, Jose L. Zafra, Justin R. DeFrancisco, David Casanova, Manho Lim, John D. Tovar, Juan Casado, Dongho Kim   +9 more
doaj   +1 more source

Amine-Triggered 6 pi-Electrocyclization-Aromatization Cascade of Ynedienamines

, 2017
An unprecedented 6 pi-electrocyclization-aromatization cascade reaction of ynedienamines is described. The electron-rich ynedienamine is converted by gamma-protonation to an electrophilic allenyl iminium species which is susceptible to amine addition ...
Li, Xijian, Yong Huang, Huang, Yong, Yu, Huidong, Xijian Li, Huidong Yu   +5 more
core   +1 more source

The EU's Strategy for Sustainability: A Landmark Turn With the European Green Deal?

European Policy Analysis, EarlyView.
ABSTRACT While the European Green Deal (EGD) has been widely recognized as a milestone in the EU's sustainability strategy, scholars disagree on the nature of the policy change it represents. Critics highlight its limited social and environmental ambitions, despite its portrayal as a “man on the moon” moment.
Ekaterina Domorenok, Franco Gatti
wiley   +1 more source

Synthesis and Structure of Unsymmetrical Anthracenyl-Isoxazole Antitumor Agents Via the Diastereoselective Bromination of 3-(9′-Anthryl)-Isoxazole Esters

Crystals
In pursuit of unsymmetrical precursors for the novel series of anthracenyl-isoxazole amide (AIM) antitumor agents, a series of substituted anthracenes were subjected to bromination and re-aromatization in our study, during which we solved four single ...
Michael J. Campbell, Daniel A. Decato, Chun Li, Matthew J. Weaver, Nicholas R. Natale   +4 more
doaj   +1 more source

Hydrogen isotope fractionation during aromatization to form alkylnaphthalene: Insights from pyrolysis experiments of 1-n-butyldecalin

Alkylnaphthalene homologues are important components of aromatic fraction in sedimentary organic matter and contain significantly geochemical information relative to formation and evolution of the host organic matter.
Liao, Zewen, Wei, Zhiwei, Cheng, Bin, Deng, Hanyu, Li, Yuxian, Wang, Haozhe, Zhang, Yiman   +6 more
core   +1 more source

Binuclear Copper‐Dependent Oxidative Enzymes Involved in Fungal Natural Product Modifications

Journal of the Chinese Chemical Society, EarlyView.
This article summarizes recent biochemical characterizations of a new enzyme family named by the authors as binuclear copper‐dependent oxidative enzymes (BiNCOs). Found in fungal natural product biosynthesis, BiNCOs catalyze diverse CH functionalization reactions, including C(sp3)H halogenation, C(sp3)H hydroxylation, C(sp3)O macrocyclization, and ...
Chen‐Yu Chiang, Masao Ohashi, Yi Tang
wiley   +1 more source

Propane aromatization on hierarchical Ga/HZSM-5 catalysts

, 2018
Gallium containing ZSM-5 zeolites were prepared by ion exchange and mechanical mixture from the parent ZSM-5 and two desilicated zeolites to be tested in propane aromatization.
Hamieh, T.; id_orcid, Pinard, L., Toufaily, J., Hamieh, S., Raad, M.   +4 more
core   +1 more source

A Solvent‐Free Synthesis of Imidazo[1,5‐a]pyridines Using CCl4 as an Oxidant

Journal of Heterocyclic Chemistry, EarlyView.
A solvent‐free synthesis of imidazo[1,5‐a]pyridines (Impys) using CCl4 as an oxidant reagent and DBU as the base is informed. An array of Impys derived from different benzylic, heteroaryl aldehydes and others was synthesized in moderate to good yields.
Alejandro Castillo‐Baltazar, Luis E. Mendoza‐Herrera, Alfredo Toscano, J. Armando Luján‐Montelongo, M. Carmen Ortega‐Alfaro, José G. López‐Cortés   +5 more
wiley   +1 more source