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<h1><span style="font-size: small;"><strong>Copper(I) complexes with N-(2-quinolinylmethylene)-1, 5-dimethyl- 2-phenyl-1-pyrazole-3-(2H)-one and phosphine as  ligands: Effective catalyst for Sonogashira cross-coupling reaction</strong></span></h1>

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Title Statement <h1><span style="font-size: small;"><strong>Copper(I) complexes with N-(2-quinolinylmethylene)-1, 5-dimethyl- 2-phenyl-1-pyrazole-3-(2H)-one and phosphine as  ligands: Effective catalyst for Sonogashira cross-coupling reaction</strong></span></h1>
 
Added Entry - Uncontrolled Name Chavan, Sanjay ; Department of Chemistry, Shivaji University, Kolhapur
Devkule, Shilpa ; Department of Chemistry, Shivaji University, Kolhapur
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Uncontrolled Index Term Synthetic and structural chemistry, spectroscopy, catalysis
Copper catalyst, Arylated alkynes, Sonogashira coupling
 
Summary, etc. <p><strong>Abstract</strong></p> <p>A new series of copper(I) complexes of the type [Cu(<strong>L</strong>)(PPh<sub>3</sub>)<sub>2</sub>]X(<strong>1a-c</strong>) and [Cu(<strong>L</strong>)(dppe)]X (<strong>2a-c</strong>) have been prepared by the reaction of Cu(MeCN)<sub>4</sub>]X (Where X = ClO<sub>4</sub><sup>-</sup>, BF<sub>4</sub><sup>- </sup> and PF<sub>6</sub><sup>- </sup>) with N-(2-quinolinylmethylene)-1,5-dimethyl-2-phenyl-1-pyrazole-3-(2H)-one (<strong>L</strong>) in presence of triphenyl- phosphine (PPh<sub>3</sub>) or 1,2-bis(diphenylphosphino)ethane (dppe) as an ancillary ligand. The UV–Visible spectra indicate that the ancillary phosphine ligands significantly perturb the MLCT state of copper(I) complexes. The thermally stable <strong>1a-c</strong> and <strong>2a-c</strong> complexes exhibit quasireversible redox behaviour corresponding to Cu(I)/Cu(II) couple. All complexes were tested as catalyst for Sonogashira cross-coupling of phenylacetylene with aryl iodide. The results showed that all complexes worked as an effective catalyst at low temperature yielded substituted aryl alkynes as a product. The nature of phosphine ligands and size of counter anions shows marked effect on their catalytic properties of all the complexes<strong>.</strong></p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-10-06 10:36:53
 
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http://op.niscair.res.in/index.php/IJCA/article/view/28224
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 59, ##issue.no## 5 (2020): INDIAN JOURNAL OF CHEMISTRY- SECTION A
 
Language Note English
 
Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/28224/465487092
 
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