Results 181 to 190 of about 2,093,219 (268)

Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco   +5 more
wiley   +1 more source

Surface and Interfacial Engineering toward Durable Mechanically Coupled Flexible Electronics

open access: yesAdvanced Science, Volume 13, Issue 49, 3 September 2026.
This Review highlights how surface and interfacial engineering governs the reliability, durability, and functional stability of mechanically coupled flexible electronics. By integrating fundamental interfacial theory, failure mechanisms, multiscale engineering strategies, and representative applications, it provides a design‐oriented framework for ...
Qian Wang, Fangfang Dai, Wei Wu
wiley   +1 more source

Chiral Morphing of Liquid Crystal Polymer Networks

open access: yesAdvanced Science, Volume 13, Issue 51, 14 September 2026.
This paper reviews how macroscopic chirality spontaneously arises from liquid crystal polymer materials. It describes how alignment is utilized to create the mechanical anisotropy, geometric misorientation and asymmetry that leads to chiral shape morphing, how shape selection between helicoids and helices arises, the techniques used to prepare these ...
Laurens T. de Haan
wiley   +1 more source

Antioxidant Activities of Pentacyclic Triterpenes From Melipona beecheii Propolis and Their Semisynthetic Derivatives

open access: yesChemistry &Biodiversity, Volume 23, Issue 9, September 2026.
M. beecheii propolis contains eleven identified PTs, including germanicone and glutinol, reported for the first time in this material. Antioxidant assays reveal Fe(III)‐reducing activity at an effective concentrations lower than DPPH radical‐scavenging activity.
Aarón Santana‐Hernández   +7 more
wiley   +1 more source

Diversification of the Avarane Skeleton Toward Spiroetherone A

open access: yesChemistryEurope, Volume 4, Issue 9, September 2026.
Molecular complexity and diversity were generated from the avarone skeleton, leading, among other transformations, to an oxaspiro[4.5]dienone via Wagner–Meerwein rearrangements, a popolohuanone E‐like dibenzofuran via a (3+2) dimerization, and a pentacyclic imidate via a tandem PIDA‐mediated alkene–phenol cyclization/Ritter reaction.
Guillaume Schoenn   +3 more
wiley   +1 more source

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