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The Petasis Reaction: Applications and Organic Synthesis-A Comprehensive Review.
Top Curr Chem (Cham)
January 2025
Department of Chemistry, Yashavantrao Chavan Institute of Science, Lead College, Karmaveer Bhaurao Patil University, Satara, Maharashtra, 415001, India.
The Petasis reaction has introduced significant advancements through the use of various catalysts, solvents, methodologies, and substrates in diverse areas of chemistry, including medicinal, organic, combinatorial, biochemical, and heterocyclic chemistry. It is a prominent method for synthesizing compounds such as α-amino acids, β-amino alcohols, Aza-beta-lactams, alkylaminophenols, α-arylglycines, 2H-chromenes, aminophenols, and hydrazide alcohols. With the increasing demand for medicines, drugs, industrial products, insecticides, and pesticides, the Petasis reaction has become an indispensable and versatile tool.
View Article and Find Full Text PDFDesign of natural asphalt sulfamic acid (NA-NHSOH) as a scalable natural asphalt-derived heterogeneous Brønsted acid to catalyze multicomponent reactions meeting green chemistry goals.
Heliyon
January 2025
Department of Chemistry, Faculty of Basic Sciences, Ilam University, P.O. Box 69315516, Ilam, Iran.
This study highlights an innovative approach to catalysis by utilizing natural asphalt as a support material for developing carbon-based catalysts. By leveraging the principles of green chemistry, the research aims to create recyclable and environmentally friendly heterogeneous catalytic systems. This aligns with the growing demand for greener technologies and the use of biocompatible materials in chemical processes.
View Article and Find Full Text PDFMass production of ultrasmall MnO nanoparticles for glutathione responsive off-on / switching magnetic resonance imaging and tumor theranostics.
RSC Adv
January 2025
State Key Laboratory of Crystal Materials, Shandong University Jinan Shandong 250100 P.R. China
Individual theranostics with an integrated multifunction holds considerable promise for clinical application compared with multicomponent regimes. MnO nanoparticles with an ultrasmall size (4 nm) and mass production capability were developed with dual function of integrated tumor magnetic resonance imaging (MRI) and therapy. The high valence state of MnO nanocrystals enables a sensitive reaction with the glutathione (GSH) molecule and favorable decomposition ability, which further induces a unique, favorable, variable turn-off and turn-on MRI property.
View Article and Find Full Text PDFBase-Promoted [4 + 1 + 1] Multicomponent Tandem Cycloaddition of -Substituted Nitroarenes, Aldehydes, and Ammonium Salts To Access 2,4-Substituted Quinazoline Frameworks.
J Org Chem
January 2025
Key Laboratory of Biomass Green Chemical Conversion of Yunnan Provincial Education Department, Yunnan Key La-boratory of Chiral Functional Substance Research and Application, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650504, P. R. China.
We report a base-promoted, metal-free multicomponent tandem reaction, involving a [4 + 1 + 1] cycloaddition process between -substituted nitroarenes, aldehydes, and ammonium salts. Modifying the substituents on the nitroaromatic compounds effectively provides structurally diverse 2-substituted and 4-alkenylquinazolines with good to excellent yields (77%-90% and quinazoline 51 examples) and high tolerance for various inorganic ammonium salts (13 examples, such as NH·HO, NHCl, and NHHF). A new method for constructing 2,4-substituted quinazoline compounds with high selectivity from simple nitrogen source compounds was developed, and the reaction can be scaled up to a gram scale.
View Article and Find Full Text PDFType II/Schottky heterojunctions-triggered multi-channels charge transfer in Pd-TiO-CuO hybrid promotes photocatalytic hydrogen production.
J Colloid Interface Sci
January 2025
College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Biomass Fibers and Ecodyeing & Finishing, Wuhan Textile University, Wuhan 430200, PR China. Electronic address:
Rapid charge recombination, limited light response, and slow surface reactions were observed in the photocatalysts, thereby limiting their future-oriented applications in photocatalytic hydrogen production through water splitting. Constructing a multi-channel charge separation photocatalysis system could solve those questions. In this study, Pd-TiO-CuO composites were successfully accomplished via a facile chemical reduction method.
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