Results 51 to 60 of about 5,754 (198)
Binap-silver-catalyzed enantioselective multicomponent 1,3-dipolar cycloaddition of azomethines ylides derived from ethyl glyoxylate [PDF]
, 2015 The enantioselective binap–silver catalyzed multicomponent 1,3-dipolar cycloaddition using ethyl glyoxylate, phenylalanine ethyl ester, and maleimides is described. The employment of basic silver carbonate allows the reaction to take place in the absence
Mancebo Aracil, Juan +2 more
core +2 more sources
Analytical Science Advances, Volume 7, Issue 1, June 2026.ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela +7 more
wiley +1 more source
MedComm, Volume 7, Issue 5, May 2026.Novel phenylalanine derivatives were identified as HIV‐1 capsid inhibitors. IC‐2i showed significant anti‐HIV‐1 activity at picomolar concentrations. ABSTRACT The HIV‐1 capsid (CA) is a validated antiviral target that plays critical roles in both the early and late stages of the viral life cycle.
Xujie Zhang +18 more
wiley +1 more source
Lubricated Bearing Lifetimes of a Multiply Alkylated Cyclopentane and a Linear Perfluoropolyether Fluid in Oscillatory Motion at Elevated Temperatures in Ultrahigh Vacuum [PDF]
Bearing life tests in vacuum with three space liquid lubricants, two multiply alkylated cyclopentanes (MACs) and a linear perfluoropolyether (PFPE) were performed. Test conditions included: an 89 N axial load (mean Hertzian stress 0.66 GPa), vacuum level
Braza, Joseph +2 more
core +1 more source
Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 3, May 2026.ABSTRACT The migration of intentionally and non‐intentionally added substances (IAS/NIAS) from food packaging into foodstuffs presents a significant challenge to consumer health and food safety. Accurate and comprehensive identification of these chemical migrants is therefore paramount.
Xue‐Chao Song +5 more
wiley +1 more source
, 1990 Organic molecules and materials with large numbers of unpaired spins promise to display novel combinations of magnetic, optical, and electrical properties.
Dougherty, Dennis A.
core
Clumped Isotope Temperature Reconstruction Using Stalagmite Drip Cups
Rapid Communications in Mass Spectrometry, Volume 40, Issue 8, 30 April 2026.ABSTRACT Rationale Application of clumped isotope palaeothermometry to speleothems (carbonate cave deposits, e.g., stalagmites and flowstones) has been restricted largely to subaqueous samples because of kinetic fractionation processes that occur during subaerial speleothem formation, which lead to erroneously high inferred temperatures.
Stuart Umbo +11 more
wiley +1 more source
Polyethylene‐Polyamide‐6 Diblock Copolymers for Fused Filament Fabrication
Journal of Polymer Science, Volume 64, Issue 8, Page 1744-1759, 15 April 2026.Linear HDPE‐PA6 block copolymers were prepared by polymerization of ethylene to a macroinitiator and subsequent anionic caprolactam polymerization. The copolymer with a HDPE mass of 6500 Da and PA6 mass of 20.000 Da was used as a filament in 3D printing.
Elsa M. Schoeneberger +1 more
wiley +1 more source
Elektrophile Alkylierungen von Norbornen - Synthese 7-substituierter Norbornene [PDF]
, 1986 Die Lewis-Säure-katalysierte Addition SN1-reaktiver Alkylhalogenide 2 an Norbornen liefert syn-7-Alkyl-exo-2-halogennorbornane 3 neben geringen Mengen der anti-Isomeren 9.
Birch +19 more
core +1 more source
Catalytic asymmetric C-H insertion reactions of α-diazocarbonyl compounds [PDF]
, 2010 The purpose of this review is to provide an overview of the development of asymmetric catalysts for C-H insertion reactions over the past two decades, focusing on the application of these catalysts in the decomposition of α-diazocarbonyl compounds. Given
Ford, Alan +2 more
core +1 more source