98%
921
2 minutes
20
Unlike conventional amide synthesis, a decarboxylative amidation of aryl/heteroarylacetic acids by reaction with NHS and -butyl nitrite has been reported to afford both aliphatic and (hetero)aromatic amides in satisfactory yields. Mechanistic studies revealed a previously unexplored pathway for the formation of an activated ester through the generation and subsequent reactions of traceless α-functionalized benzylic radicals, which upon subsequent one-pot reaction with amines form the amides. A gram-scale synthesis of Moclobemide indicates the practical applicability.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/acs.orglett.3c00927 | DOI Listing |
Water Res
July 2025
Zhejiang Key Laboratory of Civil Engineering Structures & Disaster Prevention and Mitigation Technology, College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China; Taizhou Research Institute of Intelligent Construction on Coastal Soft Soil, Zhejiang University of Techno
The divergent transformation pathways of iopamidol (IPM) adsorbed on polyethersulfone microplastics (PES-MPs) during UV/chlorine (UV/Cl) and UV/peracetic acid (UV/PAA) treatments were elucidated in this study. Molecular-level trade-offs between degradation efficiency and disinfection byproducts (DBPs) toxicity were unraveled through fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) analysis. Radical-mediated cleavage of aromatic C-I bonds was predominantly observed in UV/Cl process, yielding low-molecular weight chlorinated aliphatics (300-500 Da).
View Article and Find Full Text PDFInt J Biol Macromol
August 2025
Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China; State Key Laboratory of Coal Liquification, Gasification and Utilization with High Efficiency and Low
The persistent contamination of penicillin G sodium (PGNa) in pharmaceutical fermentation residues poses critical environmental and public health risks, demanding urgent global remediation strategies. While microbial degradation represents a promising solution, the enzymatic mechanisms governing PGNa detoxification remain poorly elucidated. This study demonstrates the exceptional PGNa degradation capacity of a multi-enzyme system derived from Sphingobacterium sp.
View Article and Find Full Text PDFBioresour Technol
November 2025
Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China; State Key Laboratory of Coal Liquification, Gasification and Utilization with High Efficiency and Low
The escalating environmental contamination from penicillin G sodium (PGNa) misuse poses significant threats to ecosystem integrity and public health, necessitating advanced remediation strategies. In this study, porous magnetic biochar (SAMB) was derived from penicillin fermentation residues through coupled covalent precipitation and acid-alkali modification (98.3 % PGNa removal within 2 h).
View Article and Find Full Text PDFJ Org Chem
June 2025
Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar 160 062, India.
Termini modification is an attractive strategy for discovering new peptide-based drugs. We report that DMAP catalyzes the reaction of amino acids and peptides with isocyanates, synthesizing a variety of C-terminus or side chain modified amino acids and peptides bearing Boc, Fmoc, or Cbz groups in a rapid and environment-friendly manner and releasing CO as a byproduct.
View Article and Find Full Text PDFWater Res
September 2025
Shenzhen Key Laboratory of Ecological Remediation and Carbon Sequestration, Key Laboratory of Microorganism Application and Risk Control, Ministry of Ecology and Environment, State Key Laboratory of Regional Environment and Sustainability, Institute of Environment and Ecology, Shenzhen International
This study investigates the enhancement of ozonation efficiency through the introduction of manganese ions (O/Mn(II)) that significantly improve the degradation of ozone-persistent organic pollutants. Manganese ions accelerate hydroxyl radical generation by catalyzing ozone decomposition, thereby facilitating more effective oxidative reactions. The application of O/Mn(II) to degrade N, N-Diethyl-3-toluamide (DEET) achieved a decomposition efficiency of 3.
View Article and Find Full Text PDF