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Upstream product

• 100-43-6 4-vinylpyridine 
• 1120-71-4 1,3-propanesultone 

Relevant academic research and scientific papers

Organic-inorganic hybrid polyionic liquid based polyoxometalate as nano porous material for selective oxidation of sulfides

Organic-inorganic hybrid nano porous materials based on poly(ionic liquid)-polyoxometalate (PIL-POM) were reported. These hybrid materials were synthesized by the reaction of 4-vinyl pyridine with 1,3-propanesultone, followed by the polymerization and also sulfonate-functionalized cross-linked poly(4-vinylpyridine) and combining these polymers with H5PMo10V2O40 (PMo10V2). Activity of prepared PIL-PMo10V2 hybrids were investigated as catalysts for oxidation of sulfides with H2O2 as oxidant. For understanding catalytic activities of the PIL-PMo10V2 hybrids in oxidation of sulfides, effect of catalyst composition, substrate, and reaction conditions were studied. The results show that the PIL-PMo10V2 hybrids are active as selective heterogeneous catalysts for oxidation of sulfides and can be recovered and reused. The catalyst was characterized by FT-IR, TGA-DSC, XRD, SEM/EDX, BET, CV and zeta potential measurement. Also, average molecular weight of prepared catalysts were measured.

Non-covalent marriage of β-cyclodextrin-polyethylene glycol and functional polyacrylamide: Via host-guest interaction: Construction, characterization and performances

This paper reports the non-covalent marriage of bridged β-cyclodextrin and functional acrylamide polymers via host-guest interactions. The structure of supramolecular polymeric systems (polymer/bis-CD) was determined by FT-IR, 1H NMR and SEM. T

Novel acidic ionic liquid polymer for biodiesel synthesis from waste oils

The novel solid acidic ionic liquid polymer (PIL) has been synthesized through the copolymerization of acidic ionic liquid oligomers and divinylbenzene (DVB). Its catalytic activities were investigated through the biodiesel synthesis from waste oils. The

Preparation method of amantadine

The invention discloses a preparation method of amantadine, which belongs to the technical field of organic chemical synthesis, and is characterized by comprising the following steps: taking a compound adamantane as an initial raw material, generating an intermediate 1-acetamido adamantane in the presence of acetonitrile, a polyion liquid PIL catalyst and sulfuric acid, and then hydrolyzing the intermediate into amantadine in a system of alcohol and alkali. The preparation method is environment-friendly, post-treatment is convenient, the use amount of sulfuric acid and acetonitrile is greatly reduced through the catalyst polyion liquid, and post-treatment is simple. The ionic liquid catalyst can be recycled, so that the cost is greatly saved, and the method is suitable for large-scale industrial production.

Thermo-responsive poly(N -isopropylacrylamide)- block -poly(ionic liquid) of pyridinium sulfonate immobilized Pd nanoparticles in C-C coupling reactions

A thermo-responsive poly(N-isopropylacrylamide)-block-poly(ionic liquid) (PNIPAM-b-PIL) of pyridinium-type was prepared. Initially, controlled synthesis of PNIPAM was performed via RAFT method. Subsequently, PNIPAM as macromolecular chain transfer agent (macro-CTA) was used for fabrication of PNIPAM-b-PIL through reaction with a synthesized IL monomer i.e. 4-vinyl pyridinium propane sulfonate. The Pd catalyst was produced throughout palladium nanoparticles' anchoring into this block copolymer. The catalyst was characterized using ICP, FT-IR, NMR, UV-Vis, TGA, XRD, SEM and EDX techniques. The catalyst's TEM image proved nearly fine dispersion of PdNPs with negligible agglomeration. The catalyst was used in the production of a variety of substituted alkenes and biaryl compounds (Heck and Suzuki coupling) in organic and aqueous media and under solvent free conditions. Additionally, the results signified extreme reusability of the catalyst with a simple recycling procedure.

Poly(4-vinylpyridine) supported acidic ionic liquid: A novel solid catalyst for the efficient synthesis of 2,3-dihydroquinazolin-4(1H)-ones under ultrasonic irradiation

A novel poly(4-vinylpyridine) supported acidic ionic liquid catalyst was synthesized by the reaction of 4-vinylpyridine with 1,3-propanesultone, followed by the polymerization and the addition of the heteropolyacid. Due to the combination of polymer features and ionic liquid, it acted as a heterogeneous catalyst to effectively catalyze the cyclocondensation reaction of anthranilamide with aldehydes under ultrasonic irradiation and afforded the corresponding 2,3-dihydro-4(1H)-quinazolinones compounds in good to excellent yields. In addition, the catalyst could be easily recovered by the filtration and reused six times without significant loss of catalytic activity. More importantly, the use of ultrasonic irradiation can obviously accelerate the reaction.