Abstract A series of polyester prepolymers was synthesized from itaconic acid, phthalic anhydride, propane-1,2-diol and diethylene glycol by condensation polymerization. The use acid as a source unsaturation (instead more common maleic anhydride giving fumarate moieties) enabled to replace styrene reactive diluent methyl methacrylate. Room temperature curing model resin initiated butanone peroxide in combination with several cobalt-, iron- vanadium-based accelerators. Measurements gelation...

In this work, two bio-based raw materials, rapeseed oil and technical-grade oleic acid, were modified to yield acrylated monomers. Polymeric latexes designed for coating applications synthesized using emulsion polymerization. Methyl methacrylate butyl acrylate copolymerized with various ratios of the monomers (0–20 wt.% in monomer mixture). The polymerization high conversion low coagulum content was successfully performed up 15 monomers, leading long-term stable latexes. asymmetric flow...

This study explores the utilization of post-consumer poly(ethylene terephthalate) (PET) as a material in synthesis styrene-free unsaturated polyester (UP) resin. The process involves glycolysis PET waste with diethylene glycol and condensation polymerization bio-based itaconic acid. resulting possesses reactive methylidene functions that, contrast to commonly employed fumarates/maleates, facilitate copolymerization non-styrene diluents. To formulate resins, methacrylates itaconates were used...

Imidazolium-based ionic liquids are applied as all-in-one catalysts for the supercritical carbon dioxide–epoxide cycloaddition to produce β-hydroxyurethanes under mild conditions.

Abstract Acrylated methyl esters of higher fatty acids derived from camelina oil and linseed were synthesized through transesterification, epoxidation, subsequent acrylation. Methyl methacrylate butyl acrylate copolymerized with various amounts bio-based derivatives (5 – 30 wt% in monomer mixture) to obtain polymeric latexes for coating applications. Successful emulsion polymerizations up 25 the performed low coagulum (below 2%) high conversion (around 95%). The incorporation into was...

This work is focused on investigating the interaction of antitumor active metallocene vanadocene dichloride (Cp2VCl2) and amino acids in aqueous solution at physiological pH. Sixteen acid complexes [Cp2V(aa)][X] (aa = gly, ala, val, leu, ile, phe, his, trp; X Cl, PF6) were prepared characterized basis spectral measurements (EPR, MS, IR, Raman). Amino are coordinated to fragment through oxygen atom carboxylic group nitrogen group, resulting a five-membered chelate ring. Complexes...

The synthesis and molecular structures are reported for the transition metal heteroleptic organostannylene complexes {[2,6-(Me2NCH2)2C6H3]SnCl}(C5H5)(CO)2MoCl (6) {[2,6-(Me2NCH2)2C6H3]Sn(OAc)}Pd(Cl)[2-(Me2NCH2)C6H4] (7). It is shown that intramolecularly coordinated [2,6-(Me2NCH2)2C6H3]SnCl undergoes a redox-type reaction with Pd(PPh3)4 to give cis-[2,6-(Me2NCH2)2C6H3]SnCl}2PdCl2.

The mechanism of synthesis [(η3-Ind′)(η5-Cp)Mo(CO)2] was studied on methyl-substituted derivatives (Ind′ = 2-MeC9H6; 4,7-Me2C9H5). It observed that the initial step involving reaction with HCl gives dimeric chloride species [{(η5-Ind′)Mo(CO)2(μ-Cl)}2]. This outcome differs from structure suggested in literature. Furthermore, it demonstrated by various examples compounds formula [{(η5-Ind′)Mo(CO)2(μ-Cl)}2] are convenient starting materials giving [(η3-Ind′)(η5-Cp′)Mo(CO)2] through appropriate...

The synthesis and characterization of new ring-functionalized molybdenocene derivatives [CpCp′Mo(CO)2]2+ [CpCp′Mo(CO)Br]+ (η5-C5H4R; R = CH2CH2OMe, CH2CH2COOEt, CH2CH2OOCMe, COOMe) are reported. Three alternative routes were used to assemble the CpCp′Mo moiety. Following route I, unsubstituted precursor [CpMo(CO)2(NCMe)2]+ reacts with substituted cyclopentadienes (Cp′H) give after oxidation dicationic compounds [CpCp′Mo(CO)2]2+. Alternatively, II introduces substituent in first reaction step...

Synthesis, characterization, and reactivity of new allyl cyclopentadienyl molybdenum(II) compounds [(η3-C3H4R1)(η5-C5H3(R2)2)Mo(CO)2] (R1 = H, COOMe; R2 COOMe, CONHtBu) are reported. Although these structural analogues [(η3-C3H5)(η5-Cp)Mo(CO)2], their is very different. While protonation [(η3-C3H5)(η5-Cp)Mo(CO)2] gives a cationic complex, the presented give complexes [(η3-C3H4R)Mo(CO)2(NCMe)3][BF4] (R COOMe) or stable complexes. The theoretical calculations have shown that this behavior...

Abstract A series of vanadocene complexes [Cp′ 2 V( L )][OTf] (Cp′ = η 5 ‐C H , 4 Me; phen, 5‐NO ‐phen, 5‐NH 4,7‐Ph ‐phen) was prepared and characterized by mass spectrometry EPR spectroscopy. Structures two that contain an N N′ ‐chelating ligand, [(η Me) V(phen)][OTf] · 0.5Me CO ) V(5‐NH ‐phen)][OTf] the triflate intermediate V(OTf) ] were further confirmed X‐ray diffraction analysis. The cytotoxicity study has shown phenanthroline ligands have considerably higher in vitro activity toward...

The series of molybdenum indenyl compounds [(Ind′)Mo(CO)2(NCMe)2][BF4] was prepared, and their reactivity toward spiro[2.4]hepta-4,6-diene studied. It observed that the ring opening could be blocked through substitution in ring. Hence, 2-substituted compound [(η5-C9H6Me)Mo(CO)2(NCMe)2][BF4] 1,3-disubstituted [(η5-C9H5tBu2)Mo(CO)2(NCMe)2][BF4] do not produce usual ansa-compounds but with η4-bonded [(Ind′)(η4-C5H4(CH2)2)Mo(CO)2][BF4]. use 1-substituted [(η5-C9H6R)Mo(CO)2(NCMe)2][BF4] (R = Ph,...