TAILIEUCHUNG - Highly efficient method for oximation of aldehydes in the presence of bis-thiourea complexes of cobalt, nickel, copper and zinc chlorides

In this study, the selective oximation of structurally diverse aromatic aldehydes (versus ketones) to the corresponding aldoxime derivatives was investigated using the combination system of NH2OH·HCl and bis-thiourea complexes of cobalt, nickel, copper and zinc chlorides, MII(tu)2Cl2, in a mixture of CH3CN-H2O (1:1). | Highly efficient method for oximation of aldehydes in the presence of bis-thiourea complexes of cobalt nickel copper and zinc chlorides Current Chemistry Letters 9 2020 121 130 Contents lists available at GrowingScience Current Chemistry Letters homepage Highly efficient method for oximation of aldehydes in the presence of bis-thiourea complexes of cobalt nickel copper and zinc chlorides Behzad Zeynizadeha and Serve Sorkhabia a Faculty of Chemistry Urmia University Urmia 5756151818 Iran CHRONICLE ABSTRACT Article history In this study the selective oximation of structurally diverse aromatic aldehydes versus Received June 21 2019 ketones to the corresponding aldoxime derivatives was investigated using the combination Received in revised form system of NH2OH HCl and bis-thiourea complexes of cobalt nickel copper and zinc December 8 2019 chlorides MII tu 2Cl2 in a mixture of CH3CN-H2O 1 1 . All reactions were carried out Accepted December 8 2019 successfully at room temperature within the immediate time up to 130 min giving the products Available online in high yields. Investigation of the results exhibited that the applied bis-thiourea metal December 8 2019 complexes represented the catalytic activity in order of Co tu 2Cl2 gt Ni tu 2Cl2 gt Cu tu 2Cl2 gt Keywords Zn tu 2Cl2 in their oximation reactions. Aldehydes Aldoximes MII tu 2Cl2 NH2OH HCl Oximation 2020 Growing Science Ltd. All rights reserved. 1. Introduction Aldoximes and ketoximes are valuable chemical intermediates that are widely utilized in the chemical 2 They are usually prepared by the reaction of carbonyl compounds and hydroxylamine hydrochloride in the presence of acids or bases including sulfuric acid3 formic acid4 pyridine5 sodium acetate and sodium 7 Because of some limitations such as low yield of the products long reaction times and the presence of acid or base sensitive functionalities in aldehyde or ketonic compounds the classical methods usually

• Hoá học
• Highly efficient method
• Oximation of aldehydes
• Structurally diverse aromatic aldehydes
• Corresponding aldoxime derivatives
• Bis thiourea complexe
• Education research
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• Simple single step solution method
• Perovskite solar cell
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• S phenyl L cysteine
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• Chemoenzymatic method