Results 181 to 190 of about 43,948 (300)

Palladium‐Catalyzed Alkynylation of Allylic Carbonates With Terminal Alkynes: Stereoretentive Access to 1,4‐Enynes and Diarylalkenyl Propargylic Frameworks

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 16, 18 August 2026.
A palladium‐catalyzed alkynylation of cinnamyl carbonates with terminal alkynes provides efficient and stereoretentive access to 1,4‐enynes, enabling the synthesis of challenging diarylalkenyl propargylic frameworks. A mild and efficient palladium‐catalyzed alkynylation of 3‐aryl, 3,3‐diaryl, and aliphatic allylic carbonates with terminal alkynes has ...
Yuri Gazzilli   +7 more
wiley   +1 more source

The Asymmetric Self‐Replicative Alkylation of N‐Arylaldimines Using Organolithium Reagents

open access: yesChemistry – A European Journal, Volume 32, Issue 31, 18 August 2026.
Here, we report a new asymmetric autoinductive reaction; the addition of nBuLi to N‐arylaldimines to form chiral lithium amides. The reaction proceeds with full conversion and complete transfer of chirality, representing the first example of an asymmetric autoinductive reaction with organolithium reagents.
Anka Hagelschuer   +2 more
wiley   +1 more source

Catalytic and Antitubercular Activities of Multifunctional Copper(II)-Schiff Base Complexes: Insights into Structure, Theoretical Calculations, and Physicochemical Behavior. [PDF]

open access: yesInorg Chem
Jurowska A   +9 more
europepmc   +1 more source

Characterization of Grape Cane Stilbenoids and Their Photo‐Degradation Products by HPLC‐DAD Coupled With Trapped Ion Mobility Spectrometry and High‐Resolution Tandem Mass Spectrometry

open access: yesRapid Communications in Mass Spectrometry, Volume 40, Issue 15, 15 August 2026.
ABSTRACT Rationale Bioactive (E)‐stilbenoids in vine extracts are prone to light‐induced transformation into the respective (Z)‐isomers and further degradation products, often resulting in a loss of bioactivity. We sought to study stilbenoid degradation beyond that of the well‐researched resveratrol due to the high diversity of stilbenoids in nature ...
Paul Besrukow   +3 more
wiley   +1 more source

Unraveling the Role of Lignin Oligomers Functionality for the Synthesis of Nonisocyanate Polyurethanes

open access: yesChemSusChem, Volume 19, Issue 15, 14 August 2026.
This study reports the synthesis of bio‐based nonisocyanate polyhydroxyurethanes from crude lignins and depolymerized lignin oligomers. The structure–properties relationships were largely explored and highlighted the key role of lignin functionality on the physical properties of the materials. Lignins are the main source of aromatic compounds in nature.
Nathan Wybo   +5 more
wiley   +1 more source

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