Results 161 to 170 of about 73,933 (268)

Potassium Bisulfite's Role in Developing a Robust Platform for Enantioenriched <i>N</i>-Alkylpyridinium Salts as Piperidine Precursors. [PDF]

J Am Chem Soc
Selingo JD, King JR, Pio B, Neel AJ, Lam YH, Paton RS, Maddess ML, McNally A.   +7 more
europepmc   +1 more source

Recent Advances in Nickel Catalysts for Sonogashira Coupling

ChemistryOpen, Volume 15, Issue 5, May 2026.
The Sonogashira coupling, catalyzed by transition metals, has become a valuable method for forming carbon‐carbon bonds. Nickel has gained considerable interest due to its lower cost and more environmentally friendly profile compared to palladium.
Sara Payamifar, Pegah Etminan, Ahmad Poursattar Marjani   +2 more
wiley   +1 more source

Photoinduced Selective Construction of Densely Functionalized Spirocyclic Ethers With Carbyne Equivalents

Angewandte Chemie, Volume 138, Issue 18, 27 April 2026.
A reactivity programmed cascade between carbyne equivalents and allylic benzoates was developed that sequentially orchestrates all three reactivity modes of carbyne equivalents, enabling the rapid installation of three σ‐bonds at a single carbon center and providing efficient, scalable access to structurally diverse spirocyclic ethers. ABSTRACT Carbyne
Jianke Su, Chu Wang, Zhongping Cai, Jiale Wu, Xu Yan Chen, Jie Wu   +5 more
wiley   +2 more sources

Deprotonation- and TICT-triggered ultra-large Stokes shift of aqueous NIR-emissive hydroxylstryryl-pyridinium derivatives. [PDF]

RSC Adv
Lu X, Xiong L, Zhang Z, Yang H, Li E, Zhang H.   +5 more
europepmc   +1 more source

Dental composites: a comprehensive review on formulation, properties and recent developments

Polymer International, Volume 75, Issue 5, Page 365-386, May 2026.
Dental composites are essential in modern restorative dentistry; this review covers their development, composition, key properties and recent advances, highlighting new technologies for optimizing materials and improving clinical outcomes. Abstract Dental composites have evolved considerably since their introduction, becoming the cornerstone of modern ...
Rayenne Latoui, Djallel Bouzid, Olivier Boyron   +2 more
wiley   +1 more source

The development of structural adhesive systems suitable for use with liquid oxygen Annual summary report, 1 Jul. 1964 - 30 Jun. 1965 [PDF]

Preparation and testing of adhesive polyurethanes, polycarbonates, and other highy halogenated polymers for liquid oxygen ...
Acle, L., Harrison, E. S., Hollander, J., Rafter, R. T., Trischler, F. D.   +4 more
core   +1 more source

High Spin Iron–Phosphinidene and Arsinidene Complexes With Attenuated Metal–Ligand Multiple Bond Character

Angewandte Chemie, Volume 138, Issue 18, 27 April 2026.
Unusually low metal–ligand bond orders are observed in high spin iron(II) pnictogenidene (PH2– and AsH2–) complexes. Electronic structure analysis provides evidence for multiconfigurational character that attenuates the metal–ligand multiple bond character normally that is typically associated with pnictogenidene ligands. These complexes can be used to
Austin D. Chivington, Álvaro García‐Romero, David C. Meier, Maren Pink, Jose M. Goicoechea, Jeremy M. Smith   +5 more
wiley   +2 more sources

Substrate‐Tight Graphene Transmembrane‐nanofluidic Devices

Small, Volume 22, Issue 25, 4 May 2026.
This study demonstrates that the covalent coupling of a pyrene layer to a silicon nitride substrate using silane and peptide chemistry increases the adhesion of graphene to the substrate and prevents the delamination of graphene. 76.2% of the devices with free‐standing graphene are successful devices for ion transport measurement in 0.1 M HCl ...
Xiaofang Kang, Buhang Chen, Erik P. van Geest, Wangyang Fu, Jianwei Gao, Luzhao Sun, Zhongfan Liu, Grégory F. Schneider   +7 more
wiley   +1 more source

Bioinspired Glycosylpyridinium Donors for Mild and Stereoselective Glycosylation. [PDF]

JACS Au
Tang L, Chen Y, Zhang Y, Yu Z, Zhong H, Jiang S, Chen Z, Liu Q.   +7 more
europepmc   +1 more source

Safety of beta‐nicotinamide mononucleotide (β‐NMN) pursuant the regulation (EU) 2015/2283 and the bioavailability of nicotinamide from this source in the context of Directive 2002/46/EC

EFSA Journal, Volume 24, Issue 5, May 2026.
Abstract Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver an opinion on beta‐nicotinamide mononucleotide (β‐NMN) as a novel food (NF) pursuant to Regulation (EU) 2015/2283, including an evaluation of the safety of its use in food supplements as a source of niacin ...
EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA), Dominique Turck, Torsten Bohn, Montaña Cámara, Jacqueline Castenmiller, Stefaan De Henauw, Ángeles Jos, Alexandre Maciuk, Inge Mangelsdorf, Breige McNulty, Androniki Naska, Kristina Pentieva, Alfonso Siani, Frank Thies, Margarita Aguilera‐Gómez, Francesco Cubadda, Thomas Frenzel, Ursula Gundert‐Remy, Francesca Marcon, Harry J. McArdle, Monika Neuhäuser‐Berthold, Miguel Prieto Maradona, Alexandros Siskos, Matthew Wright, Elisa Beneventi, Annamaria Rossi, Maura Magani, Karen Ildico Hirsch‐Ernst   +28 more
wiley   +1 more source