Results 61 to 70 of about 6,361 (234)

Microenvironmental Tuning in Isostructural Conjugated Metal–Organic Frameworks for Superior Photocatalytic H2O2 Generation

Angewandte Chemie, EarlyView.
Two isostructural conjugated‐MOFs (Fe‐Tp and Mn‐Tp) photocatalysts were engineered with nonequivalent microenvironmental redox tuning for hydrogen peroxide production. The manganese analog engages both the oxygen reduction reaction and the water oxidation reaction while suppressing decomposition, delivering 10 487 µmol g−1 h−1 with an apparent quantum ...
Kayaramkodath Chandran Ranjeesh, Avanti Chakraborty, Pilar Pena Sánchez, Jose Ignacio Martinez, Abdul Khayum Mohammed, Nada Elmerhi, Stefano Canossa, Matjaž Finšgar, Felipe Gándara, Pradip Pachfule, Dinesh Shetty   +10 more
wiley   +2 more sources

Calcium‐Mechanochemistry Enabled Ketone Synthesis From Organic Iodides and Carboxylic Acids

Advanced Science, EarlyView.
Mechanochemically generated organocalcium species display unusual chemoselectivity toward carboxylates, enabling direct ketone synthesis without overaddition. Ball milling activates commercial calcium metal under ambient, solvent‐minimized conditions, providing a broad substrate scope, high functional‐group tolerance, and a practical one‐step ...
Mengyao Pei, Zekun Yang, Xueyan Yang, Yufang Yang, Yangyang Shen, Jiemin Wang, Peile Ma, Zezhu Li, Xiaoliang Zheng, Xiaofeng Wei   +9 more
wiley   +1 more source

Borylcyclopropanes: Synthetic Strategies and Applications

Angewandte Chemie, EarlyView.
Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley   +2 more sources

Ultrasonic and mechanochemical strategies for the synthesis of oxindole scaffolds mediated by hypervalent iodine(iii) reagents [PDF]

RSC Advances
We report a rapid and efficient methodology for the synthesis of 6H-isoindolo[2,1-a] indol-6-one scaffolds 18a–k mediated by hypervalent iodine(iii) reagents using ultrasonic and mechanochemical activation strategies.
Niharan Sivaraj, Fateh V. Singh
doaj   +1 more source

The two-step mechanochemical synthesis of porphyrins [PDF]

Faraday Discuss., 2014
Porphyrin synthesis under solvent-free conditions represents the “greening” of a traditional synthesis that normally requires large amounts of organic solvent, and has hindered the industrial-scale synthesis of this useful class of molecules.
Hannah, Shy, Paula, Mackin, Andrea S, Orvieto, Deepa, Gharbharan, Geneva R, Peterson, Nick, Bampos, Tamara D, Hamilton   +6 more
openaire   +2 more sources

Mechanochemical Piezoelectric Catalysis: Advancing the Hydrogenation of Alkenes

Advanced Science, EarlyView.
This study presents mechanochemical piezoelectric catalysis for alkene hydrogenation, eliminating the need for transition metals, H2, and solvents. The method effectively hydrogenates diverse activated and unactivated alkenes and shows potential for modifying bioactive molecules in pharmaceuticals.
Zixi Ai, Mengting Liu, Xiaohong Wang, Xiaochun He, Xuemei Zhang, Zhong Lian   +5 more
wiley   +1 more source

Expeditious, mechanochemical synthesis of BODIPY dyes [PDF]

Beilstein Journal of Organic Chemistry, 2013
BODIPY dyes have been synthesized under solvent-free or essentially solvent-free conditions, within about 5 minutes in an open-to-air setup by using a pestle and mortar, with yields that are comparable to those obtained via traditional routes that typically require reaction times of several hours to days.
Laramie P. Jameson, Sergei V. Dzyuba
openaire   +3 more sources

Biomimetic Gradient Hydrogels Regulate Osteochondral Regeneration Microenvironment Remodeling via Spatiotemporal Programming Engineering

Advanced Science, EarlyView.
Electric field‑driven continuous gradient hydrogel GHZF4 achieves spatiotemporal growth factor release, modulates immune microenvironment, angiogenesis and osteochondral differentiation. It realizes cell‑free functional osteochondral repair in rat/rabbit models, offering a promising biomimetic strategy for gradient tissue regeneration.
Xiaolian Niu, Shengzhao Xiao, Di Huang, Xuesong Wang, Yanwei Cao, Xiaodan Sun, Nicholas Dunne, Xiaoming Li   +7 more
wiley   +1 more source

Mechanochemical N-alkylation of imides

Beilstein Journal of Organic Chemistry, 2017
The mechanochemical N-alkylation of imide derivatives was studied. Reactions under solvent-free conditions in a ball mill gave good yields and could be put in place of the classical solution conditions. The method is general and can be applied to various
Anamarija Briš, Mateja Đud, Davor Margetić   +2 more
doaj   +1 more source

Metal Battery Anode: Rich in Electrons, Rich in Problems: A Critical Review from Industrial Perspectives

Advanced Science, EarlyView.
Metal‐anode batteries using Li, Na, Mg, and Ca offer exceptionally high energy density, but dendrites, unstable interphases, cracking, and pore formation hinder durability and safety. This review shows how careful electrolyte and interphase design can stabilize these reactive metals.
Jian Pan, Chan Shu, Oscar Tutusaus, Rana Mohtadi   +3 more
wiley   +1 more source