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Radical mediated

Most polymerizations in this section can be categorized as stable (Tree) radical-mediated polymerizations (sometimes abbreviated as SFRMP). In the following discussion systems have been classed according to the type of stable radical involved, which usually correlates with the type of bond homolyzed in the activation process. Those described include systems where the stable radical is a sulfur-ccntered radical (Section 9.3.2), a selenium-centered radical (Section 9.3.3), a carbon-centered radical (Sections 9.3.4 and 9.3.5), an oxygen-centered radical (Sections 9.3.6, 9.3.7), or a nitrogcn-ccntcrcd radical (Section 9.3.8). Wc also consider polymerization mediated by cobalt complexes (Section 9.3.9) and certain monomers (Section 9.3.5). [Pg.457]

Stable carbon-centered radicals, in particular, substituted diphenylmethyl and triphenylmethyl radicals, couple reversibly with propagating radicals (Scheme 9.11). With, the carbon-centered radical-mediated polymerization systems described to dale, the propagating radical should be tertiary (e.g. methacrylate ester) to give reasonable rates of activation. [Pg.467]

Other Oxygen-Centered Radical-Mediated Polymerizations... [Pg.483]

Metal complexes may also act as initiators in stable radical-mediated polymerization with the metal complex performing the role of the stable radical. [Pg.484]

SFRMP stable free radical mediated polymerization... [Pg.589]

ORl OX w di-Miutyl peroxyoxalalc deactivation by reversible chain transfer and bioinolecular aclivaiion 456 atom transfer radical polymerization 7, 250, 456,457, 458,461.486-98 deactivation by reversible coupling and untmolecular activation 455-6, 457-86 carbon-centered radical-mediated poly nierizaiion 467-70 initiators, inferlers and iriiters 457-8 metal complex-mediated radical polymerization 484... [Pg.605]

Radical-mediated silyldesulfonylation of various vinyl and (a-fluoro)vinyl sulfones 21 with (TMSlsSiH (Reaction 25) provide access to vinyl and (a-fluoro)vinyl silanes 22. These reactions presumably occur via a radical addition of (TMSlsSi radical followed by /)-scission with the ejection of PhS02 radical. Hydrogen abstraction from (TMSlsSiH by PhS02 radical completes the cycle of these chain reactions. Such silyldesulfonylation provides a flexible alternative to the hydrosilylation of alkynes with (TMSlsSiH (see below). On oxidative treatment with hydrogen peroxide in basic aqueous solution, compound 22 undergoes Pd-catalyzed cross-couplings with aryl halides. [Pg.131]

Kim and coworkers introduced silyl radical mediated addition of alkyl radical to silyloxy enamine 76. The silyloxy enamine moiety is readily accessible from a variety of functionalities. The mechanistic concept is illustrated in the Scheme 12 and involves the addition of R radical to 76 to give the radical adduct 77 and the subsequent homolytic cleavage of N-O bond to yield the desired product 78 and a silyloxy radical 79. The latter undergoes 1,2-phenyl migration to give the silyl radical 80 that abstracts halogen from the alkyl halide to regenerate the R radical. [Pg.150]

Unsaturated azocinones were synthesized by 2 -i- 2 cycloaddition of benzoni-triles to phenols and a final radical mediated fragmentation [67]. [Pg.188]

Diabetic patients have reduced antioxidant defences and suffer from an increased risk of free radical-mediated diseases such as coronary heart disease. EC has a pronounced insulin-like effect on erythrocyte membrane-bound acetylcholinesterase in type II diabetic patients (Rizvi and Zaid, 2001). Tea polyphenols were shown to possess anti-diabetic activity and to be effective both in the prevention and treatment of diabetes (Choi et al, 1998 Yang et al, 1999). The main mechanism by which tea polyphenols appear to lower serum glucose levels is via the inhibition of the activity of the starch digesting enzyme, amylase. Tea inhibits both salivary and intestinal amylase, so that starch is broken down more slowly and the rise in serum glucose is thus reduced. In addition, tea may affect the intestinal absorption of glucose. [Pg.138]

KERRY N and ABBEY M (1998) The isoflavone genistein inhibits copper and peroxyl radical mediated low density lipoprotein oxidation in vitro. Atherosclerosis. 140 (2) 341-7. [Pg.216]


See other pages where Radical mediated is mentioned: [Pg.433]    [Pg.490]    [Pg.147]    [Pg.196]    [Pg.382]    [Pg.461]    [Pg.466]    [Pg.467]    [Pg.483]    [Pg.599]    [Pg.605]    [Pg.607]    [Pg.615]    [Pg.616]    [Pg.617]    [Pg.617]    [Pg.617]    [Pg.621]    [Pg.622]    [Pg.622]    [Pg.623]    [Pg.631]    [Pg.631]    [Pg.631]    [Pg.632]    [Pg.632]    [Pg.632]    [Pg.632]    [Pg.632]    [Pg.634]    [Pg.66]    [Pg.148]    [Pg.155]    [Pg.30]   
See also in sourсe #XX -- [ Pg.268 ]




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2-deoxyribose hydroxyl radical-mediated oxidation

Alkene epoxidation radical-mediated

Alkyl halides radical, cobalt-mediated

Alkylation xanthate-mediated radical

Amines free radical-mediated

Carbon radicals redox-mediated method

Carbon-Centered Radical Mediated Polymerization

Carcinogenesis free radical mediated

Cerium -mediated radical reaction

Cleavage radical-mediated

Cobalt-mediated radical

Cobalt-mediated radical polymerization

Cobalt-mediated radical polymerization CMRP)

Copper(II)-Mediated Radical Reactions

Copper-mediated living radical

Copper-mediated living radical polymerization

Cyclization radical-mediated

Cycloadditions, radical cation mediated

Elimination reactions, radical-mediated

EtMgBr-iodoalkane-mediated Coupling of Arylmagnesium Compounds with Tetrahydrofuran via a Radical Process

Fatty acids, radical-mediated

Free radical-mediated damage

Free radical-mediated injury, lipid

Free radical-mediated tissue damage

Free-radical mediated injury

Free-radical-mediated Multicomponent Coupling Reactions

Hydrogen atom abstraction, radical-mediated

Hydrogen substitution reactions, radical-mediated

Hydroxyl Radical-Mediated 2-Deoxyribose Oxidation Reactions

Indirect Electrochemical Reductions Using Radical Anions or Dianions of Organic Compounds as Mediators

Initiators stable radical-mediated polymerization

Iron -mediated radical reaction

Lewis Acid-Mediated Diastereoselective Radical Reactions

Lewis acid-mediated radical

Lewis acid-mediated radical complexes

Lewis acid-mediated radical isotactic control

Lewis acid-mediated radical polymerization

Lewis acid-mediated radical reaction

Lewis acid-mediated radical substrates

Lipid oxidation free radical mediated

Living Radical Polymerization Mediated by Stable Organic Radicals

Living radical polymerization mediating agent

Manganese-mediated radical addition

Mediated Radical Addition

Mediated radical polymerization

Metal Complex-Mediated Radical Polymerization

Metal mediated radical couplings

Nickel Mediated Radical Reactions

Nitrogen-Centered Radical Mediated Polymerization

Nitrogen-centered radical-mediated

Nitrone-mediated radical coupling

Nitroxide mediated living free radical

Nitroxide mediated living free radical polymerization

Nitroxide mediated living/controlled radical

Nitroxide mediated living/controlled radical polymerisations

Nitroxide mediated polymerization controlled radical

Nitroxide mediated radical

Nitroxide-mediated Radical Polymerization (NMRP) Approach to Polymer-grafted CNTs

Nitroxide-mediated controlled radical

Nitroxide-mediated radical alkoxyamine

Nitroxide-mediated radical copolymers

Nitroxide-mediated radical crosslinking

Nitroxide-mediated radical grafting

Nitroxide-mediated radical kinetics

Nitroxide-mediated radical mechanism

Nitroxide-mediated radical polymerisation

Nitroxide-mediated radical polymerizatio

Nitroxide-mediated radical polymerization

Nitroxide-mediated radical polymerization NMRP)

Nitroxide-mediated radical synthesized

Nitroxy-mediated radical polymerization

Nitroxyl-mediated radical

Nitroxyl-mediated radical polymerization

Nucleophilic substitutions, radical-mediated

Organo-cobalt Porphyrin Mediated Radical Polymerization

Organocobalt-Mediated Radical Reactions

Organometallic-mediated radical

Organometallic-mediated radical polymerization

Organotellurium-mediated radical

Organotellurium-mediated radical polymerization

Other Oxygen-Centered Radical Mediated Polymerization

Oxidation radical-mediated

Oxidations Mediated by TEMPO and Related Stable Nitroxide Radicals (Anelli Oxidation)

Oxidative radical-mediated

Oxygen-centered radical mediated

Oxygen-centered radical mediated polymerizations

Peroxide-mediated radical cyclization

Photoinitiated nitroxide-mediated radical polymerization

Poly nitroxide mediated radical

Polymerization free radical-mediated

Polymerization, anionic nitroxide-mediated radical

Radical Anion-Mediated Cyclizations

Radical Carbonylations Mediated by Tin, Germanium, and Silicon Reagents

Radical Reaction Mediated by Grignard Reagents in the Presence of Transition Metal Catalyst

Radical Reactions Mediated by Grignard Reagents

Radical cyclization tin mediated

Radical hypervalent iodine-mediated

Radical mediators

Radical reactions TEMPO-mediated oxidation

Radical reactions titanocene mediation

Radical-Mediated MBFTs

Radical-Mediated Pulmonary Lesions

Radical-mediated brominations

Radical-mediated brominations products

Radical-mediated cascade

Radical-mediated cyclizations

Radical-mediated dehalogenation

Radical-mediated deiodination

Radical-mediated deoxygenation

Radical-mediated group-transfer imidoylation with isonitriles

Radical-mediated reactions

Radical-mediated ring expansion

Radicals free-radical-mediated multicomponent

Radicals radical-mediated cyclizations

Reactive intermediate-mediated free radical

Ring closure strategies, radical-mediated

Samarium Diiodide-mediated Enantioselective Radical Additions

Samarium(II) Mediated Radical Reactions

Selenium-Centered Radical Mediated Polymerization

Silver -mediated radical reaction

Solid radical-mediated reactions

Subject free radical-mediated

Substitution radical mediated

Substitution reactions, radical-mediated

Substitution reactions, radical-mediated brominations

Sulfur-Centered Radical Mediated Polymerization

Synthesis of Block Copolymers by Nitroxide-Mediated Radical Polymerization, NMP

TEMPO radical, nitroxide mediated

Tempo-mediated free radical

Tempo-mediated free radical polymerization

Thymine hydroxyl radical-mediated oxidation

Tin Mediated Addition of Secondary and Tertiary Radicals

Titanocene-mediated radical reactions

Transition-metal-mediated radical

Transition-metal-mediated radical polymerization

Tributyltin mediated radical reaction

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