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AshPhos Ligand: Facilitating Challenging Aminations in Five- and Six-Membered Heteroaryl Halides Using Cyclic Secondary and Bulky Amines.
JACS Au
January 2025
Department of Chemistry, University of Missouri, 601 South College Avenue, Columbia, Missouri 65211, United States.
Our newly developed AshPhos ligand represents a significant advancement in Buchwald-Hartwig aminations, overcoming many limitations of existing ligands. Created from affordable and accessible materials, AshPhos enhances catalytic performance, especially for extremely difficult substrates, by emphasizing the principles of ligand chelation and cooperativity. Its successful synthesis and application in catalytic aminations underscore its potential for use in the sustainable synthesis of compounds important to medicinal chemistry, materials, and energy.
View Article and Find Full Text PDFA cross-lagged analysis of the relationship between marital quality and depression among the older adults: gender effects of socioeconomic status.
Front Psychol
January 2025
School of Education Science, Shaoguan University, Shaoguan, Guangdong, China.
Objective: This study aimed to explore the mechanism and gender effect of socioeconomic status on the relationship between marital quality and depression among the older adults, with the intention of providing a practical foundation for enhancing the quality of life of the older adults.
Methods: The data sourced from the third (conducted in 2015, denoted as the first survey) and fourth (carried out in 2018, regarded as the second survey) installments of the China Health and Retirement Longitudinal Survey (CHARLS) were meticulously analyzed through the utilization of cross-lagged analytical techniques and moderating effect examination methodologies.
Results: Among the older adults, there exists a reciprocal causal relationship between marital quality and the level of depression.
Evaluation of the Catalytic Effect of Metal Additives on the Performance of a Combined Battery and Electrolyzer System.
ACS Appl Energy Mater
January 2025
Hollingsworth and Vose, Groton, Massachusetts 01450, United States.
A low-cost method of green hydrogen production via the modification of a lead acid battery has been achieved, resulting in a hydrogen flow rate of 5.3 L min from a 20-cell string. The electrochemical behavior and catalytic effect of various metal additives on the hydrogen evolution reaction (HER) was evaluated using cyclic voltammetry.
View Article and Find Full Text PDFCitrate: a key signalling molecule and therapeutic target for bone remodeling disorder.
Front Endocrinol (Lausanne)
January 2025
Department of Orthopedics, The First Hospital of China Medical University, Shenyang, China.
Bone remodeling is a continuous cyclic process that maintains and regulates bone structure and strength. The disturbance of bone remodeling leads to a series of bone metabolic diseases. Recent studies have shown that citrate, an intermediate metabolite of the tricarboxylic acid (TCA) cycle, plays an important role in bone remodeling.
View Article and Find Full Text PDFNanoscale Ligand Spacing Regulates Mechanical Force-Induced Cancer Cell Killing.
Nano Lett
January 2025
Department of Bioengineering, Indian Institute of Science, Bangalore 560012, India.
Cancer cells sense and respond to the extracellular environment, with differences in nanoscale ligand spacing affecting their behavior. Emerging reports show that stretch/ultrasound-mediated mechanical forces promote apoptosis (mechanoptosis) by increasing myosin contractility. Since myosin contractility is critical for nanoscale-ligand spacing-regulated cell behavior, we study the effect of ligand spacing on mechanoptosis.
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