Source:http://linkedlifedata.com/resource/pubmed/id/20583839
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
28
|
| pubmed:dateCreated |
2010-7-29
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| pubmed:abstractText |
Transmetalation is the rate-limiting step! The transmetalation between arylzinc reagents and ArNi(II)R was confirmed as the rate-limiting step in the nickel-catalyzed oxidative coupling reactions. It was proved to be an excellent model allowing the first quantitative measurement of the kinetic rate constants of transmetalation from a live catalytic system. Rate constants from 0.04 to 0.31 M(-1) s(-1) were obtained for different arylzinc reagents under the conditions, and the activation enthalpy DeltaH(++) was 14.6 kcal/mol for PhZnCl. The substituent effect on the transmetalation was also gained for the first time from the catalytic reaction.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jul
|
| pubmed:issn |
1520-5126
|
| pubmed:author | |
| pubmed:issnType |
Electronic
|
| pubmed:day |
21
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| pubmed:volume |
132
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
9607-9
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| pubmed:year |
2010
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| pubmed:articleTitle |
Transmetalation is the rate-limiting step: quantitative kinetic investigation of nickel-catalyzed oxidative coupling of arylzinc reagents.
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| pubmed:affiliation |
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
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| pubmed:publicationType |
Journal Article
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