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Aqueous solution of biogenic carboxylic acids as sustainable catalysts and green reaction media for the high-yielding synthesis of Biginelli adducts, Hantzsch esters, and substituted pyridines.
RSC Adv
December 2024
Department of Chemistry, National Institute of Technology Karnataka (NITK) Surathkal Mangalore-575025 India
3,4-Dihydropyrimidin-2(1)-ones (DHPMs) and 1,4-dihydropyridines (DHPs), prepared by applying the Biginelli and Hantzsch reaction protocols, respectively, are well-documented nitrogen-containing heterocycles with intriguing pharmacological properties. The aqueous solution of biogenic carboxylic acids renewably produced from biomass catalytic or enzymatic processes can be used as a sustainable catalyst and green reaction media for synthesizing DHPs and DHPMs. This work evaluates the efficacy of various biogenic acids in their aqueous solutions as catalysts for synthesizing DHPs and DHPMs from substituted benzaldehydes.
View Article and Find Full Text PDFEmulsification and pH Control for Sustainable Thermochemical Fluids Reactivity.
Molecules
November 2024
Department of Petroleum Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.
Managing chemical reactivity is crucial for sustainable chemistry and industry, fostering efficiency, reducing chemical waste, saving energy, and protecting the environment. Emulsification is used for different purposes, among them controlling the reactivity of highly reactive chemicals. Thermochemical fluids (TCFs), such as NHCl and NaNO salts, have been utilized in various applications, including the oil and gas industry.
View Article and Find Full Text PDFSynthesis of new-type, cost-effective and insensitive energetic materials nitration of solid bituminous hydrocarbons.
RSC Adv
November 2024
Department of Chemistry, Faculty of Basic Sciences, Ilam University P.O. Box 69315516 Ilam Iran
A global trend for the development of energetic materials using various sources is promoted by researchers annually. Solid bituminous hydrocarbons can play a key role in carbon science as abundant, low-cost, and mineral carbonaceous substrates. This study focuses on the design and synthesis of a series of new energetic materials from natural asphalt (NA), petroleum pitch (PP) and petroleum bitumen (PB) as industrial and available solid bituminous hydrocarbons.
View Article and Find Full Text PDFBranched CuAu nano-alloy for NH oxidation-assisted H production and nitrite detection in water solution.
Mikrochim Acta
October 2024
Zhejiang University, Hangzhou, China.
The H production using NH splitting (OHzS) was often constrained by the requirement for insufficient stability, distinct catalysts at the anode and cathode, and the high-cost electrocatalyst associated with confined activity. This work verified the efficacy of surfactant-free branched CuAu nano-alloy as a bifunctional electrocatalyst for H production. Benefiting from its favorable electronic structure and surfactant-free surface, surfactant-free CuAu nano-alloy demonstrated a reduced over-potential compared with pure Cu, pure Au, and CuAu nano-alloy prepared by surfactant.
View Article and Find Full Text PDFABNOH-Linked Nucleotides and DNA for Bioconjugation and Cross-linking with Tryptophan-Containing Peptides and Proteins.
Chemistry
September 2024
Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague 6, Czech Republic.
Reactive N-hydroxy-9-azabicyclo[3.3.1]nonane (ABNOH) linked 2'-deoxyuridine 5'-O-mono- and triphosphates were synthesized through a CuAAC reaction of ABNOH-PEG-N with 5-ethynyl-dUMP or -dUTP.
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