Results 191 to 200 of about 853,917 (241)

Interrupted Barton–Zard Reaction/Friedel–Crafts Alkylation Telescoped Reaction for the Synthesis of Pyrrolo[3,4‐b]indole Cores

open access: yesAsian Journal of Organic Chemistry, EarlyView.
An interrupted Barton–Zard reaction/Friedel–Crafts alkylation telescoped reaction provides aryl‐substituted pyrrolo[3,4‐b] cores in moderate‐to‐good yields as mostly single diastereomers. The reaction is tolerant of a wide range of electron‐deficient indoles and (hetero)aromatic nucleophiles, offering a modular approach for the synthesis of multi ...
Josip Rešetar   +5 more
wiley   +1 more source

Synthesis of Benzodithieno[5.5.5.6]Fenestranes: Unexpected Epimerization and Regiochemical Outcomes

open access: yesAsian Journal of Organic Chemistry, EarlyView.
Isomeric [5.5.5.6]fenestranes annulated with one benzene and two thiophene rings are accessible via di‐2‐ and di‐3‐thienylspirane intermediates. The key double cyclization step involves surprising stereoselectivity and regioselectivity. In particular, cis‐di(2‐thienyl)spirane precursors lead to the all‐cis‐fenestrane skeleton by an unexpected acid ...
Björn Bredenkötter   +5 more
wiley   +1 more source

BRE‐X Emissions Database for End‐of‐Life Scenarios of Selective Building Construction Materials to Enable Circular Economy in Construction

open access: yesJournal of Advanced Manufacturing and Processing, EarlyView.
ABSTRACT In the United States, construction and demolition debris predominately end up in landfills with minimal end‐of‐life Re‐X (recover, recycle, reuse, etc.) scenarios, resulting in large environmental impacts and lost opportunities for material recovery.
Naveen Kumar Muthumanickam   +7 more
wiley   +1 more source

Cyclic Alternating Pattern Dynamics in Individuals at Risk for Developing Parkinson's Disease

open access: yesAnnals of Neurology, Volume 98, Issue 1, Page 136-146, July 2025.
Objective The objective of this study was to investigate the differences in cyclic alternating patterns (CAP) metrics, a non‐rapid eye movement (NREM) sleep physiological rhythm, among recently diagnosed patients with Parkinson's disease (PD), and individuals at high and low risk for developing PD based on genetic and prodromal risk.
Andrew Dagay   +5 more
wiley   +1 more source

Neuroimaging Biomarkers for Friedreich Ataxia: A Cross‐Sectional Analysis of the TRACK‐FA Study

open access: yesAnnals of Neurology, EarlyView.
Objective We aimed to quantify differences in the brain and spinal cord between Friedreich ataxia and controls, stratified by age and disease stage, including for the first time in young children. Methods TRACK‐FA is the largest prospective, longitudinal, multi‐modal neuroimaging study in Friedreich ataxia to date.
Nellie Georgiou‐Karistianis   +33 more
wiley   +1 more source

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