Results 61 to 70 of about 85,771 (308)

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

open access: yesAngewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera   +2 more
wiley   +2 more sources

Hydroxylations of Biphenyl by Fungi [PDF]

open access: yesJournal of Applied Bacteriology, 1980
Sixty‐six species of fungi were screened for their ability to hydroxylate biphenyl. Thin‐layer and gas chromatographic analyses indicated that seven organisms actively hydroxylated this substrate. Of particular interest were Cunninghamella echinulata ATCC 9244 which produced 4‐hydroxybiphenyl
R V, Smith   +3 more
openaire   +2 more sources

Efficient and Site-Specific C–H Hydroxylation of Enones via a New Mechanism Useful for the Late-Stage Functionalization of Drugs and Natural Products

open access: yes, 2022
A mild and efficient method for the direct C(sp3)–H hydroxylation of enones in a site-specific way was developed via visible-light-induced hydrogen-atom transfer (HAT), which facilitates -hydroxylation of primary, secondary, and tertiary C–H bonds of ...
Jian-Min, Yue, Cheng-Yu , Zheng
core   +1 more source

A High‐Current‐Tolerant Multimetallic Phosphide Electrode for Alkaline Water Electrolysis Toward Industrial Conditions

open access: yesAdvanced Science, EarlyView.
A phosphide‐modified multimetallic HER electrode achieves industrial‐level performance with minimal noble‐metal content. It delivers 1.7 A cm−2 at 2.0 V in 6 M KOH at 70°C and operates stably for over 200 h at 500 mA cm−2. Phosphorus tuning of the electronic structure optimizes hydrogen adsorption, offering a durable, high‐rate pathway for alkaline ...
Yang Li   +5 more
wiley   +1 more source

Upcycling Water Pollutants Into Long‐Chain Polymers via Synergistic Interfacial Dechlorination and Organic Radical Stabilization

open access: yesAngewandte Chemie, EarlyView.
HEO‐regulated electronic structure drives nonradical PI activation, promoting ETP‐mediated polymerization of 4CP into high‐molecular‐weight products with enhanced surface enrichment. Concurrent dechlorination occurs via radical coupling and •OHads attack, enabling efficient carbon retention and selective product evolution at the liquid–solid interface.
Ziwei Yao   +8 more
wiley   +2 more sources

Active sites in Fe/ZSM-5 for nitrous oxide decomposition and benzene hydroxylation with nitrous oxide

open access: yes, 2008
The effect of the iron content and the pretreatment conditions of Fe/ZSM-5 catalysts on the Fe speciation and the catalytic activities in nitrous oxide decomposition and benzene hydroxylation with nitrous oxide has been investigated.
Sun, Keqiang   +7 more
core   +1 more source

Asparagine hydroxylation is a reversible post-translational modification [PDF]

open access: yes, 2020
Amino acid hydroxylation is a common post-translational modification, which generally regulates protein interactions or adds a functional group that can be further modified.
Peet, Daniel J.   +4 more
core   +1 more source

Efficient Concentration and Complete Destruction of Short‐Chain and Emerging PFAS in Contaminated Water via Integrated Interface Engineering‐Enhanced Carbon Felt Sorption and Photochemical Processes

open access: yesAdvanced Science, EarlyView.
A closed‐loop “Concentrate‐Destroy” strategy is presented for completely eliminating short‐chain and emerging PFAS, in which the new 3D PPy@P‐CF is used for efficiently concentrating PFAS and Cu2+‐mediated photodegradation is applied for the completely destroying PFAS in the sorbent regeneration eluent.
Hao Yu   +5 more
wiley   +1 more source

Enantioselective Synthesis of a New Class of Stable and Functionalized Cyclopentadienes via CuH‐Catalysis

open access: yesAngewandte Chemie, EarlyView.
Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa   +4 more
wiley   +2 more sources

Alkane Hydroxylation by Peroxy Acids: A Comparison with the Cytochrome P450 Hydroxylation

open access: yes, 2008
Alkane hydroxylation by peroxy acids proceeds by a synchronous nonconcerted peroxy oxygen insertion into the C-H bond according to density functional theory.
Groenhof, A.R.   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy