Results 111 to 120 of about 21,735 (237)

Advances in organic UV filters for sunscreens over the past decade

open access: yesPhotochemistry and Photobiology, EarlyView.
Highlighted organic UV filter frameworks that have been described for sunscreens over the past decade divided into three groups: derivatives of or inspired by approved organic UV filters, natural product‐based compounds, and miscellaneous. Abstract Ultraviolet (UV) radiation is a major environmental factor in photoaging, erythema, and skin cancer ...
Gabriela Zanella Marcon   +4 more
wiley   +1 more source

Rh(III)-Catalyzed Double Annulation of 3-Phenyl-1,2,4-oxadiazoles with 2-Diazo-1,3-diketones: Access to Pyran-Fused Isoquinolines

open access: yesMolecules
Efficient access to pyranoisoquinoline derivatives via rhodium-catalyzed double C-H functionalization of phenyl oxadiazoles and diazo compounds has been developed.
Enshen Zhang, Mei Sun, Lvlv Gao
doaj   +1 more source

Asymmetric Transformations of α,β‐Unsaturated Oxazolidinones Catalyzed by C2‐Symmetric Chiral Iron Triad Complexes

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.
This review highlights the evolution of highly enantioselective oxazolidinone transformations enabled by C2‐symmetric ligands, with emphasis on chiral iron triad complexes as cost‐effective, environmentally benign alternatives to late‐transition‐metal catalysts.
Arthur David, Thierry Ollevier
wiley   +1 more source

Recent advances in C(sp3)–H bond functionalization via metal–carbene insertions

open access: yesBeilstein Journal of Organic Chemistry, 2016
The recent development of intermolecular C–H insertion in the application of C(sp3)–H bond functionalizations, especially for light alkanes, is reviewed.
Bo Wang, Di Qiu, Yan Zhang, Jianbo Wang
doaj   +1 more source

It's a Gas: Bioconjugation With Vapor‐Phase Reagents

open access: yesChemistry – A European Journal, Volume 32, Issue 17, 5 May 2026.
Gaseous reagents are an emerging class of bioconjugation reagents that can offer alternative selectivity paradigms for the construction of precise bioconjugates. A variety of both inert and highly reactive gases have recently been developed for bioconjugation use.
Yuxuan Ding, Jun Ohata, Zachary T. Ball
wiley   +1 more source

Azobenzene‐Functionalized Ionic Liquids: Light‐Responsive Surfactants With Catalytic Potential

open access: yesChemistryOpen, Volume 15, Issue 5, May 2026.
Surface‐active imidazolium‐based ionic liquids containing an azobenzene group exhibit different micellization properties upon photoisomerization. Applying a sulfonate tag to the azobenzene moiety profoundly affects the physicochemical behavior of both isomers in water.
Markus Hegelmann   +7 more
wiley   +1 more source

Protocol for aqueous synthesis of bioactive quaternary ammonium betaine derivatives under blue LED

open access: yesSTAR Protocols
Summary: Quaternary ammonium compounds exhibit diverse applications as antibiotics, as surfactants, in paper industries, in sewage treatment, and in aquaculture.
Suchismita Rath, Subhabrata Sen
doaj   +1 more source

Rh(II)-mediated domino [4 + 1]-annulation of α-cyanothioacetamides using diazoesters: A new entry for the synthesis of multisubstituted thiophenes

open access: yesBeilstein Journal of Organic Chemistry, 2017
A new approach towards the synthesis of multisubstituted thiophenes is elaborated based on Rh(II)-catalyzed domino reactions of acyclic diazoesters with α-cyanothioacetamides.
Jury J. Medvedev   +5 more
doaj   +1 more source

Cytochrome P450-catalyzed insertion of carbenoids into N–H bonds [PDF]

open access: yes, 2013
Expanding nature’s catalytic repertoire to include reactions important in synthetic chemistry will open new opportunities for ‘green’ chemistry and biosynthesis. We demonstrate the first enzyme-catalyzed insertion of carbenoids into N–H bonds.
Arnold, Frances H.   +3 more
core   +1 more source

Lifelong Exercise as a Modulator of CD4+ T Cell Immunometabolism

open access: yesEuropean Journal of Clinical Investigation, Volume 56, Issue 5, May 2026.
Hypothetical framework illustrating how physical exercise initiated early in life acts as a critical immunomodulatory factor by promoting optimal immune function from childhood and establishing a better “immunometabolic functional peak”. This early advantage may confer sustained benefits to CD4+ T cell metabolism and immune competence across aging ...
Bruna Spolador de Alencar Silva   +9 more
wiley   +1 more source

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