Results 31 to 40 of about 4,902 (184)
Mass Spectrometry Reviews, EarlyView.ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt +4 more
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Smart Molecules, EarlyView.Electron‐beam induced C–F cleavage in –CF3 generates F−, which abstracts a proton to form the acid that catalyzes tBMA deprotection during post‐exposure baking. This self‐sensitization mechanism enables the precise formation of high‐resolution negative‐tone patterns with enhanced sensitivity and resolution.
Yuting Tang +9 more
wiley +1 more source
Benign by design: A paradigm shift in cosmetic ingredient development
International Journal of Cosmetic Science, EarlyView.Benign by design strategies enable the creation of biodegradable cosmetic ingredients, reducing environmental persistence while maintaining the intended biological activity. This work compiles design rules and tools to guide the development of more sustainable molecules for the cosmetics industry.
Sandra Mota +3 more
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Asian Journal of Organic Chemistry, Volume 15, Issue 8, August 2026.We report a visible‐light photoredox‐catalyzed strategy for the divergent dual selenylation of inert C─H and N─H bonds. Using a single catalytic system with Ru(bpy)3Cl2·6H2O and diselenides, arylamines and indoles are selectively converted to distinct N,C‐ or C,C‐disubstituted organoselenides, respectively. ABSTRACT We report a visible‐light photoredox‐
Fengxiang Zhu, Ying Hou, Xiao‐Feng Wu
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Traceless Redox-Annulations of Alicyclic Amines
SynOpen, 2020 Amines such as 1,2,3,4-tetrahydroisoquinoline undergo redox-neutral annulations with ortho-(nitromethyl)benzaldehyde. Benzoic acid acts as a promoter in these reactions, which involve concurrent amine α-C–H bond and N–H bond functionalization ...
Dillon R. L. Rickertsen +4 more
doaj +1 more source
Macromolecular Materials and Engineering, Volume 311, Issue 8, August 2026.Partially bio‐based epoxy networks combine diglycidyl ether of bisphenol A with innovative eugenol‐derived amines to create tunable thermosets. By adjusting hardener ratios, the material architecture is precisely controlled. Thermomechanical behavior, together with molecular dynamics revealed by solid‐state 1H NMR, uncover direct links between cross ...
Stephanie Chedid +4 more
wiley +1 more source
ChemCatChem, Volume 18, Issue 14, 29 July 2026.This study highlights the optimization process of the Silicibacter pomeroyi (SpATA)‐catalyzed transamination of 5‐(hydroxymethyl)furfural (HMF) to HMFA with MIPA or l‐alanine as soluble and immobilized enzyme. The reaction was upscaled, which proved the successful production of several grams of HMFA.
Tom Kunde +5 more
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Chemistry–Methods, Volume 6, Issue 7, July 2026.The esterification of phosphinic, phosphonic, and phosphoric acids is not possible due the high enthalpy of activation. However, the barrier may be overcome under MW irradiation to give phosphinates, phosphonates, and alkoxyphosphoric acids, respectively. In the latter cases, the remaining P(O)OH group was esterified by alkylation.
György Keglevich
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Natural Product Communications, 2011 A study has been made of the 1 H NMR spectra of peracetylated β-glucopyranosides and α-arabinopyranosides obtained by reaction of D- and L-glucoses, and L- and D-arabinoses with either ( R )- or ( S )-2-octanols.
Tatyana N. Makarieva +8 more
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5α-Pregna-1,20-dien-3-one
Acta Crystallographica Section E, 2010 The title compound, C21H30O, was isolated from the soft coral Sinularia sp. The molecule contains four alicyclic rings, all trans-fused, among which three six-membered rings are in different distorted chair conformations while a five-membered ring ...
Guang-ying Chen +4 more
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