A method for the reduction of aldehydes with pinacolborane catalyzed by pincer cobalt complexes based on a triazine backbone is developed in this paper. The presented methodology allows for the transformation of several aldehydes bearing a wide range of electron-withdrawing and electron-donating groups under mild conditions. The presented procedure allows for the direct one-step hydrolysis of the obtained intermediates to the corresponding primary alcohols. A plausible reaction mechanism is proposed.
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http://dx.doi.org/10.3390/ijms25147894 | DOI Listing |
Physiol Mol Biol Plants
December 2024
Department of Botany, University of Kashmir, Srinagar, 190006 India.
Petal senescence represents a crucial phase in the developmental continuum of flowers, ensuing tissue differentiation and petal maturation, yet anteceding seed formation and development. Instigation of petal senescence entails myriad of changes at the cytological, physiological and molecular dimensions, mirroring the quintessential characteristics of cell death. In the current investigation biochemical and molecular intricacies were scrutinized across various developmental stages (bud to the senescent phase).
View Article and Find Full Text PDFStress
December 2025
Laboratory of Functional and Structural Biology, Biological Sciences Institute, Federal University of Pará, Belém, Brazil.
Stress occurs as a reaction to mental and emotional pressure, anxiety, or scarring. Chronic stress is defined as constant submission to these moments. It can affect several body systems, increase blood pressure, and weaken immunity, thereby interfering with physiological health processes.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, China.
Imine-based covalent organic frameworks (COFs) have been widely applied in photocatalytic hydrogen peroxide (HO) production because of their highly crystalline properties and tunable chemical structures. However, the inherent polarization of C═N linkage brings a high energy barrier for π-electron delocalization, impeding the in-plane photoelectron transfer process, which leads to an inadequate efficiency of HO photosynthesis. In addition, the chemical stability of most imine-COFs remains insufficient due to the reversible nature of imine linkage.
View Article and Find Full Text PDFNat Commun
December 2024
Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
The functionalized polycycle with densely contiguous tertiary stereocenters is a formidable challenge in synthesizing the parvistemoline family of Stemona alkaloids. We herein report their catalytic, asymmetric total syntheses in 13-14 steps from commercially available 2-(methoxycarbonyl)-pyrrole, featuring the development and deployment of an Ir/Pd-synergistically-catalyzed allylation of α-non-substituted keto esters with secondary aryl-substituted alcohols, stereodivergently accessible to four stereoisomers. Using chiral Pd-enolate and Ir π-allyl complex under neutral conditions, no epimerization occurs.
View Article and Find Full Text PDFPeerJ
December 2024
College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China.
Soil salinization has resulted in a significant decrease in crop yields, particularly affecting the production of crops like rice ( L.). Prohexadione calcium (Pro-Ca) can enhance crop resilience against failure by managing plant height.
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