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Initiation, radical

Polymerization reactions. There are two broad types of polymerization reactions, those which involve a termination step and those which do not. An example that involves a termination step is free-radical polymerization of an alkene molecule. The polymerization requires a free radical from an initiator compound such as a peroxide. The initiator breaks down to form a free radical (e.g., CH3 or OH), which attaches to a molecule of alkene and in so doing generates another free radical. Consider the polymerization of vinyl chloride from a free-radical initiator R. An initiation step first occurs ... [Pg.21]

Arylthiols (but not alkylthiols) add to terminal alkynes regioselectively to afford a Markovnikov-type adduct 212 in good yield using Pd(OAc)2 as a catalyst[120]. This result is clearly different from the an/i-Markovnikov addition induced by a radical initiator. The hydroselenation of terminal alkynes with benzeneselenol catalyzed by Pd(OAc)2 affords the terminal alkene 213, which undergoes partial isomerization to the internal alkene 214[121]. [Pg.497]

Step 1 Homolytic dissociation of a peroxide produces alkoxy radicals that serve as free radical initiators... [Pg.268]

All of the reactions listed in Table 6.1 produce free radicals, so we are presented with a number of alternatives for initiating a polymerization reaction. Our next concern is in the fate of these radicals or, stated in terms of our interest in polymers, the efficiency with which these radicals initiate polymerization. Since these free radicals are relatively reactive species, there are a variety of... [Pg.350]

Any one of these expressions gives the rate of initiation Rj for the particular catalytic system employed. We shall focus attention on the homolytic decomposition of a single initiator as the mode of initiation throughout most of this chapter, since this reaction typifies the most widely used free-radical initiators. Appropriate expressions for initiation which follows Eq. (6.6) are readily derived. [Pg.356]

DIITIATORS - FREE-RADICAL INITIATORS] (Voll4) l,ly-Azobis(cyanocyclohexane) [2094-98-6]... [Pg.82]


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See also in sourсe #XX -- [ Pg.250 ]




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2,2-Azobisisobutyronitrile , radical initiator

Activation energy, free radical initiator

Activation energy, free radical initiator decomposition

Acyloxy radicals Initiator efficiency

Alkanes and Alkenes Radical Initiated Chlorination of 1-Chlorobutane

Alkyl radical initiation

Atom transfer radical initiator efficiency

Atom transfer radical polymerization (ATRP surface initiated

Atom transfer radical polymerization initiation techniques

Azo free radical initiator

Azobis compounds, radical initiators

Benzoylperoxide, radical initiator

Boron Alkyls and Metal Alkyl Initiators of Free-Radical Polymerizations

Boron and metal alkyl initiators of free-radical polymerizations

C-Glycosyl compounds radical initiator

Cascade Reactions Initiated by Addition of C-Centered Radicals to Alkynes

Cascade Reactions Initiated by Addition of N-Centered Radicals to Alkynes

Cascade Reactions Initiated by Addition of O-Centered Radicals to Alkynes (Self-Terminating Radical Oxygenations)

Cascade Reactions Initiated by Addition of P-Centered Radicals to Alkynes

Cascade Reactions Initiated by Addition of S-Centered Radicals to Alkynes

Cascade Reactions Initiated by Addition of Se-Centered Radicals to Alkynes

Cascade Reactions Initiated by Addition of Sn-Centered Radicals to Alkynes

Cationic radical initiators

Chain initiation radical polymerization

Chain reaction, free-radically initiated

Cobalt-initiated radical reactions

Conventional radical initiators

Copolymerization free-radical initiated

Cycloaddition reactions radical cation-initiated

Cycloaromatization Initiated by External Radicals

Decarboxylation radical initiated

Decomposition rates, free radical initiators

Decomposition rates, free radical initiators hydroperoxides

Empirical radical initiating rate

Environment Free-radical initiator

Formation of initiating free-radicals

Fragmentation initiator-derived radicals

Frcc-radical initiators

Free Radical Initiator Modifiers

Free radical addition initiators

Free radical chain polymerisation initiation

Free radical chain polymerization initiation

Free radical chain polymerization initiators

Free radical chain reactions, initiation

Free radical chain reactions, initiation photochemically

Free radical initiating groups

Free radical initiator, PMMA

Free radical initiators

Free radical initiators active volumes

Free radical initiators benzoin derivatives

Free radical initiators benzophenone

Free radical initiators half life

Free radical initiators half-life time

Free radical initiators homopolymer formation

Free radical initiators initiator efficiency

Free radical initiators peroxides

Free radical initiators photoinitiators

Free radical initiators transfer constants

Free radical initiators, activation volumes

Free radical lipid oxidation initiation

Free radical oxidation, ultraviolet light initiates

Free radical photopolymerization initiation

Free radical polymerization initiation

Free radical polymerization initiation phase

Free radical polymerization initiators

Free radical reactions, graft chemical initiation

Free radical vinyl polymerization initiation

Free-Radical Conversions of Polymers Initiated by Nitrogen Trioxide

Free-Radical-Initiated Systems

Free-radical Initiated Processes

Free-radical dispersion polymerization initiation

Free-radical dispersion polymerization initiator decomposition

Free-radical polymerisation initiation

Free-radical-initiated chain polymerization

Free-radical-initiated chain polymerization polyacrylamide

Free-radical-initiated chain polymerization polyethylene

Free-radical-initiated chain polymerization polystyrene

Free-radical-initiated chain polymerization polyvinyl chloride

Free-radical-initiated chain polymerization styrene-acrylonitrile copolymer

Free-radical-initiated chain polymerization unsaturated polyester

Free-radically initiated solution

Free-radically initiated solution polymerization

General Introduction to UV-initiated Radical Polymerization

Graft copolymerization chemical free radical initiator

Graft copolymers free radical initiator concentration

Grafting free radical initiator

Heat-initiated free-radical

Heat-initiated free-radical polymerisation

Homogeneous Initiation by Radical-Anions

Homopolymerization radical-initiated

Hydroxyl radical initiation

Hydroxyl radical, lipid peroxidation initiation

Initiating and propagating radicals

Initiating radical

Initiating radical

Initiation [of free radical

Initiation by free radicals

Initiation by radical anions

Initiation free radical

Initiation initiator-derived radicals

Initiation mechanisms, radical reactions

Initiation mechanisms, radical reactions electron transfer

Initiation mechanisms, radical reactions photolysis

Initiation mechanisms, radical reactions thermolysis

Initiation of free radical reactions

Initiation of free-radical chain reactions

Initiation of radical chain reaction

Initiation of radical polymerization

Initiation primary radical termination

Initiation radical reactivity

Initiation rate constants free radical polymerizations

Initiation reaction radical polymerisation

Initiation reactions, radicals, overview

Initiation step, radical chain reaction

Initiation, free radical reactions

Initiation, of free radical polymerisation

Initiation, of radical reactions

Initiator group, free radical

Initiator of free radical

Initiator of free radical polymerization

Initiator radical polymerization

Initiator radicals, termination

Initiator, anionic free radical

Initiator, radical, AIBN

Initiator, radical, AIBN dibenzoyl peroxide

Initiators for atom transfer radical

Initiators for atom transfer radical polymerization

Initiators free radical polymerization using

Initiators in free-radical polymerization

Initiators of free radical reactions

Initiators radical reactions

Initiators stable radical-mediated polymerization

Initiators, radical polymerization kinetics influence

Ion-radical initiation

Laser-initiated radical production

Lipid peroxidation, free radical initiated propagation

Monomers, vinyl radical initiated grafting

Organic free radical initiators

Organotellurium compounds as initiators for controlled living radical polymerization

Peroxides as radical initiators

Peroxides radical initiators

Peroxy radicals, initiation

Peroxy radicals, initiation kinetics

Photo-initiated radical allylation

Photo-initiated radical polymerization

Photochemical initiation free-radical reactions

Photochemical initiation organic radical ions

Photodegradation radical initiators

Polyacrylamide radical initiator

Polymerization free-radical initiated

Polymerization free-radically initiated

Polymerization radical-initiated

Radiation-induced polymerization free-radical chain initiation

Radiation-initiated free radical polymerization

Radical Chain Reactions Organoborane Initiators

Radical Initiation and Reactions

Radical Initiators in Organic Synthesis

Radical Path Initiation

Radical Trapping Agents for Studying Initiation

Radical chain polymerization initiator efficiency

Radical chain reaction initiation

Radical concentrations Initiators

Radical initiated double ring-opening

Radical initiated double ring-opening polymerization

Radical initiating conditions

Radical initiation, Hunsdiecker reaction

Radical initiator inhibition

Radical initiators

Radical initiators

Radical initiators definition

Radical initiators dibenzoyl peroxide

Radical initiators dihydrochloride

Radical initiators, addition

Radical initiators, addition alkenes

Radical initiators, addition substrates

Radical initiators, addition sulfonyl halides

Radical photo-initiated

Radical polymerization, initiation

Radical reaction initiation steps

Radical reactions initiation

Radical reductively initiated

Radical site initiation

Radical site reaction initiation

Radical site-initiated fragmentation

Radical thermally initiated

Radical-Site Initiation (a-Cleavage)

Radical-chain reactions, inhibition initiation

Radical-initiated polymerization in heterogeneous media

Radical-nucleophilic aromatic substitution initiation step

Radical-site initiated process

Radical-site-initiated cleavage

Radicals by initiators

Radicals, anti-Markovnikov initiation

Radicals, formation intermediates initiators

Rate constants free radical initiation

Reaction Initiation at Radical or Charge Sites

Reaction radical initiated

Reactions Leading to Formation of Initiating Free Radicals

Some initial considerations of radical mechanisms and chapter overview

Surface-Initiated Living Radical Polymerization

Surface-initiated atom transfer radical polymerization

Surface-initiated atom transfer radical polymerization method

Surface-initiated atom-transfer radical

Surface-initiated controlled radical polymerization

Telechelic free-radically initiated polymerization

Temperature control radical initiators

Termination Free-radical initiators, rates

Termination by initiator radicals

Thermal initiation, of free-radical

Thermally Initiated cationic with free radicals

Use of Cobalt for Radical Initiation

Vinylindoles, cycloaddition radical cation-initiated

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