Results 71 to 80 of about 7,061 (174)

Bromination of L-tryptophan in a Fermentative Process With Corynebacterium glutamicum

Frontiers in Bioengineering and Biotechnology, 2019
Brominated compounds such as 7-bromo-l-tryptophan (7-Br-Trp) occur in Nature. Many synthetic and natural brominated compounds have applications in the agriculture, food, and pharmaceutical industries, for example, the 20S-proteasome inhibitor TMC-95A ...
Kareen H. Veldmann, Steffen Dachwitz, Joe Max Risse, Jin-Ho Lee, Norbert Sewald, Volker F. Wendisch   +5 more
doaj   +1 more source

Facile Preparation Methods for Triarylmethyl‐Type Stable Luminescent Diradicals and Higher Multiradicals

European Journal of Organic Chemistry, Volume 29, Issue 10, 9 March 2026.
A range of synthetic methods for photophysically attractive stable luminescent diradicals have been developed, enabling the preparation of diverse derivatives. Direct substitution of the tris(2,4,6‐trichlorophenyl)methyl radical introduces donor groups to afford acceptor–donor–acceptor luminescent diradicals, while halogenated triarylmethanes are ...
Yohei Hattori, Gwénaël Rapenne
wiley   +1 more source

Chemoselectively Functionalized Ketoesters by Halogenative C–C Bond Cleavage of Cyclic Diketones

Molecules
Haloketoesters are synthetic intermediates in various cyclization reactions that facilitate the production of biologically active compounds. Nonetheless, the selective synthesis of dihaloketoesters and trihaloketoesters, which are expected to be highly ...
Hideyasu China, Nami Kageyama, Hodaka Yatabe, Mihoyo Fujitake, Yusei Matsumoto, Zhihan Jing, Toshifumi Dohi   +6 more
doaj   +1 more source

Revolutionary ZVI-Entrapped Sol–Gel Silica Matrices: Efficient Catalytic Reduction of High-Concentration Halo-Organic Compounds—Addressing Bromoacetic Acid Contamination in Industrial Wastewaters

Gels
The de-halogenation of highly concentrated halo-organic compounds using Zero Valent Iron entrapped in silica matrices as a catalyst was investigated. This study aimed to evaluate the effectiveness of the Zero Valent Iron-entrapped organically modified ...
Gifty Sara Rolly, Dan Meyerstein, Ariela Burg, Dror Shamir, Yael Albo   +4 more
doaj   +1 more source

Silent Partners in the Mill: Unveiling the Role of Additives in Mechanochemical Synthesis

Chemistry – A European Journal, Volume 32, Issue 9, 2 March 2026.
Mechanochemistry offers a sustainable, solvent‐free alternative to traditional synthesis, often enhanced by additives in a process known as additive‐assisted grinding. This review discusses how various additives, including liquids, ionic solids, and advanced materials like ionic liquids and piezoelectric compounds, improve reaction efficiency ...
Johanna Breinsperger, Nika Podlesnik, Francesco Mele, Michael Schnürch   +3 more
wiley   +1 more source

Bioinspired Bromination Enables Extensible, Strain‐Stiffening Resilin Peptide Scaffolds with Tunable Degradation

Advanced Functional Materials, Volume 36, Issue 19, 5 March 2026.
Bioinspired bromination of a resilin‐derived peptide enables the fabrication of electrospun nanofibrous scaffolds that uniquely combine strain‐stiffening elasticity, proteolytic stability, and antioxidant functionality. These brominated peptide–gelatin hybrids mimic the extensibility of natural elastomers, demonstrating tunable mechanical resilience ...
Elisa Marelli, Lorenzo Sori, Chiara Russo, Claudia Pigliacelli, Lorenza Draghi, Monica Soncini, Pierangelo Metrangolo   +6 more
wiley   +1 more source

(E,Z)-1,1,1,4,4,4-Hexafluorobut-2-enes: hydrofluoroolefins halogenation/dehydrohalogenation cascade to reach new fluorinated allene

Beilstein Journal of Organic Chemistry
A series of 2,3-dihalo-1,1,1,4,4,4-hexafluorobutanes and 2-halo-1,1,1,4,4,4-hexafluorobut-2-enes were prepared from commercially available hydrofluoroolefins 1,1,1,4,4,4-hexafluorobut-2-enes and their 1H, 19F and 13C chemical shifts measured.
Nataliia V. Kirij, Andrey A. Filatov, Yurii L. Yagupolskii, Sheng Peng, Lee Sprague   +4 more
doaj   +1 more source

Photo‐Catalyzed Labeling of Amyloid Deposits in Human Tissue to Proteotype Amyloidosis Diseases

Aggregate, Volume 7, Issue 3, March 2026.
Amyloid‐ID, a ThT‐like photocatalytic probe, enables proteotyping of amyloid deposits by ROS‐mediated protein labeling. Applied to patient biopsies, amyloid‐ID identifies potential fibrinogen‐derived amyloid in laryngeal amyloidosis, revealing a mechanically sensitive fibrillation mechanism linked to vocal cord friction.
Huan Feng, Fangliang Guo, Yan Wang, Meng You, Qiuxuan Xia, Wang Wan, Di Shen, Kaini Shen, Xin Zhang, Wei Li, Yu Liu   +10 more
wiley   +1 more source

Substrate Scope Expansion of Tryptophan Synthase for the Chemo‐Enzymatic Synthesis of Non‐Canonical Tryptophans

ChemCatChem, Volume 18, Issue 5, 13 March 2026.
The substrate scope of tryptophan synthase from Salmonella enterica (SeTrpS) was probed against 28 synthetic indole derivatives bearing aryl rings, N‐methylamino groups, alkynes, and halogens, accessing a broad range of nonnatural l‐tryptophans on analytical scale.
Celeste Nobbio, Dario Allevi, Antonia Iazzetti, Giancarlo Fabrizi, Antonella Goggiamani, Davide Tessaro, Fabio Parmeggiani   +6 more
wiley   +1 more source

α-Bromodiazoacetamides – a new class of diazo compounds for catalyst-free, ambient temperature intramolecular C–H insertion reactions

Beilstein Journal of Organic Chemistry, 2013
In this work, we introduce a new class of halodiazocarbonyl compounds, α-halodiazoacetamides, which through a metal-free, ambient-temperature thermolysis perform intramolecular C–H insertions to produce α-halo-β-lactams.
Åsmund Kaupang, Tore Bonge-Hansen
doaj   +1 more source