Low-Level Fe Doping in CoMoO Enhances Surface Reconstruction and Electronic Modulation Creating an Outstanding OER Electrocatalyst for Water Splitting.

Efficient and stable nonprecious metal-based oxygen evolution reaction (OER) electrocatalysts are pivotal for water electrolysis technology. Herein, we are reporting an effective strategy for fabricating efficient Co-based OER electrocatalysts by low-level Fe doping in CoMoO to boost surface reconstruction and electronic modulation, which resulted in excellent OER electroactivity consequently. Our findings reveal that a mere 5.

Asymmetric Three-Component Radical Cascade Reactions Enabled by Synergistic Photoredox/Brønsted Acid Catalysis: Access to α-Amino Acid Derivatives.

Multicomponent reactions (MCRs), highly sought-after methods to produce atom-, step-, and energy-economic organic syntheses, have been developed extensively. However, catalytic asymmetric MCRs, especially those involving radical species, remain largely unexplored owing to the difficulty in stereoselectively regulating the extraordinarily high reactivity of open-shell radical species. Herein, we report a conceptually novel catalytic asymmetric three-component radical cascade reaction of readily accessible glycine esters, α-bromo carbonyl compounds and 2-vinylcyclopropyl ketones via synergistic photoredox/Brønsted acid catalysis, in which three sequential C-C (σ/π/σ) bond-forming events occurred through a radical addition/ring-opening/radical-radical coupling protocol, affording an array of valuable enantioenriched unnatural α-amino acid derivatives bearing two contiguous stereogenic centers and an alkene moiety in moderate to good yield with high diastereoselectivity, excellent enantioselectivity and good -dominated geometry under mild reaction conditions.

Synthesis of 1,4-Diketones from Esters Enabled by a Tetraborylethane Reagent.

A modular synthesis method for 1,4-diketones has been developed. Utilizing inexpensive carboxylic acid esters as carbonyl sources and tetraborylethane () as a nucleophilic reagent, a one-pot strategy for constructing two C-C bonds was established. Notably, this reaction proceeds without the involvement of transition metals and exhibits excellent functional group compatibility.

Effects of Consuming Pulsed UV Light-Treated on Vitamin D Nutritional Status in Healthy Adults.

Vitamin D, essential for growth and health, is often deficient in Taiwan despite abundant sunlight. Plant-derived vitamin D (ergocalciferol) is bioavailable, environmentally friendly, and cost-effective. This study evaluated the efficacy of enhancing (PC) mushrooms' vitamin D content through pulsed ultraviolet (PUV) light and its impact on vitamin D status in humans.

Association of epidural labor analgesia with maternal and neonatal outcomes in women with preeclampsia: a propensity score-matched single-center retrospective cohort study.

Background: Epidural labor analgesia (ELA) is widely and safely used for labor pain relief. However, it remains unclear whether ELA affects maternal and neonatal outcomes in women suffering from preeclampsia.

Methods: This study reviewed the medical records of women with preeclampsia at ≥ 28 weeks of gestation between January 2015 and December 2020.