2008
DOI: 10.1002/ejic.200701144
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Highly Efficient Copper‐Mediated Atom‐Transfer Radical Addition (ATRA) in the Presence of Reducing Agent

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Cited by 79 publications
(136 citation statements)
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References 59 publications
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“…[13,14] ). [24] ATRA of these monomers in the presence of AIBN at 60 8C yielded significant amounts of polymers/telomers unless high copper loadings and/or large excess of alkyl halide (4 equiv relative to alkene) were used.…”
mentioning
confidence: 96%
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“…[13,14] ). [24] ATRA of these monomers in the presence of AIBN at 60 8C yielded significant amounts of polymers/telomers unless high copper loadings and/or large excess of alkyl halide (4 equiv relative to alkene) were used.…”
mentioning
confidence: 96%
“…[12] Even more impressive TONs were achieved with CBr 4 and [Cu II A C H T U N G T R E N N U N G (tpma)Br][Br] (tpma = tris(2-pyridylmethyl)-A C H T U N G T R E N N U N G amine) complex (as high as 160 000), enabling efficient ATRA reactions in the presence of as little as 5 ppm of copper. [13] Since the seminal reports by our research group [14] as well as Severins, [12] this method of catalyst regeneration in ATRA has attracted considerable academic interest, [15][16][17][18][19][20][21][22] and was even successfully applied to intramolecular ATRA or atom-transfer radical cyclization (ATRC) reactions.…”
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confidence: 99%
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“…[30,31] This strategy is based in the use of a constant source of organic free radicals to regenerate the Cu(I) activator, which is otherwise consumed in termination reactions. After this report, Severin [32] and Pintauer [33] have employed the same technique in ATRA reactions catalyzed by ruthenium and copper complexes, respectively. One of the possible reducing agents is AIBN, but the use of this compound has some problems.…”
Section: Enhanced Catalytic Activity By the Presence Of Additives: Thmentioning
confidence: 90%
“…However, the role of counterion coordination (in particular Br − and Cl − ) in these complexes still remains very unclear. Recently, we were able to isolate and structurally characterize neutral Cu I (TPMA)Cl [118] and Cu I (TPMA)Br [119] complexes. To our surprise, both complexes were pseudopentacoordinated ( Fig.…”
Section: Tetradentate Ligandsmentioning
confidence: 99%