Results 11 to 20 of about 3,914,198 (256)
Giant, 2021 The simultaneous control of molecular weight and tacticity in cationic polymerization remains challenging. Here, we propose a new approach for stereospecific living cationic polymerization by combining cationic reversible addition-fragmentation chain ...
Mineto Uchiyama +2 more
doaj +1 more source
An isatin aldol adduct as a precursor to α,α’-difunctionalized methyl vinyl ketones
Results in Chemistry, 2022 Isatin-methyl vinyl ketone aldol adducts underwent efficient Morita–Baylis–Hillman (MBH) and Rauhut–Currier (RC) reactions under mild conditions to bring about a functionalization of the olefinic α-carbon, and thereby α,α’-difunctionalization of methyl ...
Ajit Kumar Jha +3 more
doaj +1 more source
Molecules, 2016 Vinyl(aryl)iodonium salts are useful compounds in organic synthesis but they are under-utilized and their chemistry is under-developed. Herein is described the solvolysis of some vinyl(phenyl)iodonium salts, bearing an arylsulfonyl group, in aqueous DMSO
Eman Zawia, Wesley J. Moran
doaj +1 more source
Proton-Electron Hyperfine Coupling Constants of the Chlorophyll a Cation Radical by ENDOR Spectroscopy [PDF]
, 1977 In this paper we describe the assignment of the major coupling constants in monomer chlorophyll a cation free radical by ENDOR spectroscopy. To facilitate chemical manipulation methylpyrochlorophyllide a has been used as a stand-in, and a suite of six ...
Katz, J. J., Norris, J. R., Scheer, Hugo
core +1 more source
Antioxidants, 2020 In order to assess the diversity of Greek garlic (Allium sativum L.) landraces, 34 genotypes including commercial ones were grown in the same field and their content in organosulfur compounds, pyruvate, total sugars, and total phenolics, alongside ...
Ioanna Avgeri +5 more
doaj +1 more source
مجلة بغداد للعلوم, 2023 A new class of biologically active nanocomposites and modified polymers based on poly (vinyl alcohol) (PVA) with some organic compounds [II, IV, V and VI] were synthesized using silver nanoparticles (Ag-NPs).
Basma J. Ahmed +2 more
doaj +1 more source
Synthesis and Anticancer Activity of Some New S-Glycosyl and S-Alkyl 1,2,4-Triazinone Derivatives
Molecules, 2011 A series of S-glycosyl and S-alkyl derivatives of 4-amino-3-mercapto-6-(2-(2-thienyl)vinyl)-1,2,4-triazin-5(4H)-one (1) were synthesized using different halo compounds such as preacetylated sugar bromide, 4-bromobutylacetate, 2-acetoxyethoxy-methyl ...
Hosam A. Saad, Ahmed H. Moustafa
doaj +1 more source
Photostabilization of Poly(vinyl chloride) by Organotin(IV) Compounds against Photodegradation
Molecules, 2019 Poly(vinyl chloride) (PVC), a polymer widely used in common household and industrial materials, undergoes photodegradation upon ultraviolet irradiation, leading to undesirable physicochemical properties and a reduced lifetime.
Angham G. Hadi +6 more
semanticscholar +1 more source
CHIMIA, 2012 Mn(iii)-catalyzed formal [3+2]- and [3+3]-annulations have been developed using readily available vinyl azides with 1,3-dicarbonyl compounds and cyclopropanols.
Shunsuke Chiba
doaj +1 more source
Fire Retardancy of Vinyl Ester Nanocomposites: Synergy with Phosphorus-Based Fire Retardants [PDF]
, 2005 Vinyl ester (PVE) nanocomposites were prepared using both clay and polyhedral oligosilsesquioxanes (POSS) as the nano-dimensional material. From cone calorimetric data, it was shown that both POSS and clay affect the flammability of the nanocomposites to
Chigwada, Grace +3 more
core +2 more sources