Results 111 to 120 of about 4,472,736 (328)

HARMLESS Early Warning System for Advanced Materials

open access: yesAdvanced Sustainable Systems, EarlyView.
The HARMLESS Early Warning System tackles Advanced Materials (AdMa) risk governance by providing a framework, organised in two tiers, underpinned with methods/tools to support risk assessors in the pre‐assessment preceding risk assessment. It allows for initial screening to identify AdMa with concerns considering exposure, hazards, sustainability and ...
Julia Prinz   +11 more
wiley   +1 more source

Enhanced Oxygen Evolution Reaction Performance of Niobium–Cobalt Oxide Catalysts in Acidic and Alkaline Media

open access: yesAdvanced Sustainable Systems, EarlyView.
The electronic modulation of Nb‐doped Co3O4 catalyst showcases enhanced activity and extended stability for OER in both alkaline (1M KOH) and acidic (0.5M H2SO4) electrolytes. The higher activity emanated from the synergistic effect between the Nb5+ dopant and Co3O4.
Kassa Belay Ibrahim   +7 more
wiley   +1 more source

Decarboxylation-Driven Double Annulations: Innovative Multi-Component Reaction Pathways

open access: yesMolecules
A concerted five-component reaction strategy has been developed, featuring double [3+2] cycloadditions utilizing aspartic acid. This approach provides valuable insights into mechanistic pathways, allowing for the distinction between concerted and ...
Desheng Zhan   +4 more
doaj   +1 more source

C(sp3)─S Bond Formation via the Synergy of Oxidative With Reductive Photocatalysts Through Photoredox and Dual Hydrogen Atom Transfer Processes

open access: yesAdvanced Science, EarlyView.
The research reveals that polysulfide anions (K2Sx), which serve as reducing catalysts, can also effectively act as sulfur reagents, providing the formation of C(sp3)─S bonds through photoredox catalysis with an oxidative photocatalyst tetrabutylammonium decatungstate (TBADT) and dual hydrogen atom transfer (DHAT) process.
Chao Zhou   +8 more
wiley   +1 more source

One-pot Ugi-azide and Heck reactions for the synthesis of heterocyclic systems containing tetrazole and 1,2,3,4-tetrahydroisoquinoline

open access: yesBeilstein Journal of Organic Chemistry
A new method for the synthesis of heterocyclic systems containing tetrazole and tetrahydroisoquinoline is developed via the performance of one-pot Ugi-azide and Heck cyclization reactions.
Jiawei Niu   +6 more
doaj   +1 more source

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