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Covalently anchored polymer immobilized Co(II) phthalocyanine as efficient catalyst for oxidation of mercaptans using molecular oxygen as oxidant / Jomy K. Joseph in Industrial & engineering chemistry research, Vol. 49 N° 14 (Juillet 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6674–6677 Titre : Covalently anchored polymer immobilized Co(II) phthalocyanine as efficient catalyst for oxidation of mercaptans using molecular oxygen as oxidant Type de document : texte imprimé Auteurs : Jomy K. Joseph, Auteur ; Suman L. Jain, Auteur ; Bir Sain, Auteur Année de publication : 2010 Article en page(s) : pp. 6674–6677 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Catalyst  Oxidation Résumé : The present paper describes the covalent immobilization of cobalt phthalocyanine “MEROX catalyst” to polystyrene resin via sulfonamide linkage and its catalytic activity for the oxidation of mercaptans to disulfides using molecular oxygen as an oxidant under alkaline conditions. Polymer-supported cobalt phthalocyanine, wherein the catalyst is chemically bounded to the support which prevents the leaching of the catalyst/ligand, can readily be recovered from the reaction mixture and reused for several runs without significant decrease in catalytic activity. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100351s [article] Covalently anchored polymer immobilized Co(II) phthalocyanine as efficient catalyst for oxidation of mercaptans using molecular oxygen as oxidant [texte imprimé] / Jomy K. Joseph, Auteur ; Suman L. Jain, Auteur ; Bir Sain, Auteur . - 2010 . - pp. 6674–6677. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6674–6677 Mots-clés : Catalyst  Oxidation Résumé : The present paper describes the covalent immobilization of cobalt phthalocyanine “MEROX catalyst” to polystyrene resin via sulfonamide linkage and its catalytic activity for the oxidation of mercaptans to disulfides using molecular oxygen as an oxidant under alkaline conditions. Polymer-supported cobalt phthalocyanine, wherein the catalyst is chemically bounded to the support which prevents the leaching of the catalyst/ligand, can readily be recovered from the reaction mixture and reused for several runs without significant decrease in catalytic activity. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100351s

Efficient synthesis of 3,4 - dihydropyrimidinones in 1 - n - Butyl - 3 - methylimidazolium tetrachloroindate (BMI · InCl4) / Jomy K. Joseph in Industrial & engineering chemistry research, Vol. 50 N° 20 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11463-11466 Titre : Efficient synthesis of 3,4 - dihydropyrimidinones in 1 - n - Butyl - 3 - methylimidazolium tetrachloroindate (BMI · InCl4) Type de document : texte imprimé Auteurs : Jomy K. Joseph, Auteur ; Suman L. Jain, Auteur ; Sweety Singhal, Auteur Année de publication : 2011 Article en page(s) : pp. 11463-11466 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Dihydropyrimidinones  Tetrachloroindate Résumé : 1-n-Butyl-3-methylimidazolium tetrachloroindate (BMI·InCl4) was found to be an efficient catalyst for the synthesis of 3,4-dihydropyrimidinones in high yields under solvent-free conditions. The recovered ionic liquid phase could be reused for several runs without significant loss in activity. In addition, BMI·InCl4 is more stable toward water and air than its analogous 1-n-butyl-3-methylimidazolium tetrachloroaluminate and, hence, easier to handle. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200522t [article] Efficient synthesis of 3,4 - dihydropyrimidinones in 1 - n - Butyl - 3 - methylimidazolium tetrachloroindate (BMI · InCl4) [texte imprimé] / Jomy K. Joseph, Auteur ; Suman L. Jain, Auteur ; Sweety Singhal, Auteur . - 2011 . - pp. 11463-11466. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11463-11466 Mots-clés : Dihydropyrimidinones  Tetrachloroindate Résumé : 1-n-Butyl-3-methylimidazolium tetrachloroindate (BMI·InCl4) was found to be an efficient catalyst for the synthesis of 3,4-dihydropyrimidinones in high yields under solvent-free conditions. The recovered ionic liquid phase could be reused for several runs without significant loss in activity. In addition, BMI·InCl4 is more stable toward water and air than its analogous 1-n-butyl-3-methylimidazolium tetrachloroaluminate and, hence, easier to handle. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200522t