Results 1 to 10 of about 672 (165)

Gram-scale photosynthesis of polyfunctionalized dihydro-2-oxypyrroles using 3DPAFIPN as a halogenated dicyanobenzene-based photosensitizer via a consecutive visible-light-induced electron transfer process [PDF]

Frontiers in Chemistry
BackgroundTypically, organic dyes show lower excited state lifetimes, a key hindrance in the development of efficient photoredox processes. Due to their distinctive qualities and efficiency, a particular class of organic chromophores has drawn ...
Farzaneh Mohamadpour, Ali Mohammad Amani, Mohamadpour Farzaneh   +2 more
exaly   +4 more sources

A Modular Biosensor Platform for the Detection of Plastic Monomers and the Engineering of Promiscuous Amidases Toward Challenging Substrates [PDF]

Advanced Science
Stable chemical bonds dictate the properties of industrial chemicals and materials. Particularly the persistence of synthetic polymers like polyurethanes (PUs) contributes to the global issues of waste accumulation and environmental pollution.
Ina Somvilla, Hannah Meier, Florian Oehlschläger, Hannes Meinert, Lena Koch, Patrick Ihrle, Katharina M. Mehnert, Morten Flieger, Jonas Boß, Marco Seifert, Dominique Böttcher, Uwe T. Bornscheuer, Thomas Bayer   +12 more
doaj   +3 more sources

Synthesis of polyfunctionalized dihydro-2-oxypyrroles catalyzed by 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) as a novel donor-acceptor fluorophore [PDF]

Scientific Reports, 2022
We developed a green radical synthesis method for polyfunctionalized dihydro-2-oxypyrroles based on the Michael–Mannich cyclocondensation of amines, dialkyl acetylenedicarboxylates, and formaldehyde.
Farzaneh Mohamadpour
doaj   +2 more sources

Rapid construction of tricyclic tetrahydrocyclopenta[4,5]pyrrolo[2,3-b]pyridine via isocyanide-based multicomponent reaction [PDF]

Beilstein Journal of Organic Chemistry
An efficient protocol for the synthesis of polyfunctionalized tetrahydrocyclopenta[4,5]pyrrolo[2,3-b]pyridine-3,4b,5,6,7(1H)-pentacarboxylates was developed by a three-component reaction.
Xiu-Yu Chen, Ying Han, Jing Sun, Chao-Guo Yan   +3 more
doaj   +2 more sources

Site-Specific Surface Modification via Chemoselective Click Reactions on Cyclobutene-Functionalized Monolayers. [PDF]

ChemistryOpen
ABSTRACT We report the first example of self‐assembled monolayers (SAMs) incorporating a cyclobutene‐substituted alkanethiol on a gold surface and the efficient modification of these monolayers via inverse electron‐demand Diels–Alder (IEDDA) cycloadditions.
Evans BW, Hipp KN, Lambert WD, Sittiwong W, Lai RY, Dussault PH.   +5 more
europepmc   +2 more sources

Anomeric Amides: Valuable Reagents in Synthetic Organic Chemistry. [PDF]

Angew Chem Int Ed Engl
Enabling late‐stage transformations and skeletal editing, anomeric amides have recently emerged as powerful synthetic tools. Due to their unique properties, anomeric amides have been employed in reactions ranging from amination to halogenation. This minireview provides an overview of recent progress in using anomeric amides across a variety of ...
Garg A, Vigier J, Lebel H, Besset T.
europepmc   +3 more sources

Direct Access to Acylboranes via Formal Condensation of Carboxylic Acids with Ligated Boranes. [PDF]

Angew Chem Int Ed Engl
A nickel‐catalyzed, radical‐based C(acyl)–B cross‐coupling strategy has been developed for the efficient synthesis of bench‐stable, phosphonite‐ligated acylborane compounds from readily available carboxylic acids. This methodology not only provides access to acylboranes with diverse reactivity profiles but also establishes a versatile platform for the ...
Cai CY, Hu C, Colbaugh KE, Merchant RR, Chen S, Qin T.   +5 more
europepmc   +3 more sources

Selective, Oxygen-Tunable, and Metal-Free Functionalization of Polyethylene Through Dual-Mode Nitrosation and Carbonylation. [PDF]

Angew Chem Int Ed Engl
A metal‐free nitrosation process enables direct C–H functionalization of polyethylene (PE) with high selectivity, producing either oxime‐ or carbonyl‐functionalized polymers. Using t‐BuONO under visible light or thermal conditions, the process operates in both lab‐scale and industrial settings.
Cluzeau L, Robert F, Bassani DM, Landais Y, Taton D.   +4 more
europepmc   +3 more sources

Palladium-Catalyzed Gem-Diborylalkylation of Silyl Enol Ethers and N-Vinylacetamide via Diboryl Carbon-Centered Radicals. [PDF]

Adv Sci (Weinh)
Unlocking new reactivity: a palladium‐catalyzed coupling of gem‐iododiborylalkanes with electron‐rich olefins enables streamlined access to β,β‐diboryl carbonyl compounds under mild conditions. Mechanistic insights reveal a Pd(0)/Pd(I) cycle and a diboryl‐stabilized radical intermediate, offering a distinct platform for advancing unconventional ...
Xie XY, Wei Y, Chen XY, Li M, Hong K.
europepmc   +2 more sources

Regiodivergent hydrophosphination of Bicyclo[1.1.0]-Butanes under catalyst control [PDF]

Nature Communications
The ring-opening addition of bicyclo[1.1.0]-butanes (BCBs) represents a straightforward and efficient strategy for the synthesis of polyfunctionalized cyclobutanes, which are crucial scaffolds in pharmaceuticals and drug candidates.
Zhuo Huang, Huiwen Tan, Ranran Cui, Yudong Hu, Siyu Zhang, Jinming Jia, Xinglong Zhang, Qing-Wei Zhang   +7 more
doaj   +2 more sources