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Auteur Elisenda Reixach |
Documents disponibles écrits par cet auteur (2)



Alkoxycarbonylation of industrially relevant anilines using Zn4O(O2CCH3)6 as catalyst / Elisenda Reixach in Industrial & engineering chemistry research, Vol. 51 N° 50 (Décembre 2012)
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Titre : Alkoxycarbonylation of industrially relevant anilines using Zn4O(O2CCH3)6 as catalyst Type de document : texte imprimé Auteurs : Elisenda Reixach, Auteur ; Robert M. Haak, Auteur ; Stefan Wershofen, Auteur Année de publication : 2013 Article en page(s) : pp. 16165-16170 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Catalyst Résumé : An efficient procedure is presented for the alkooycarbonylation of industrially important amines using environmentally friendly alkyl carbonates as reagents and Zn4O(OAc)6 as catalyst. Aromatic amines in particular (thirteen examples) consistently give high yields (up to 98%), regardless of the electronic properties of the substituents or the ring substitution pattern. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732142
in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16165-16170[article] Alkoxycarbonylation of industrially relevant anilines using Zn4O(O2CCH3)6 as catalyst [texte imprimé] / Elisenda Reixach, Auteur ; Robert M. Haak, Auteur ; Stefan Wershofen, Auteur . - 2013 . - pp. 16165-16170.
Industrial chemistry
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16165-16170
Mots-clés : Catalyst Résumé : An efficient procedure is presented for the alkooycarbonylation of industrially important amines using environmentally friendly alkyl carbonates as reagents and Zn4O(OAc)6 as catalyst. Aromatic amines in particular (thirteen examples) consistently give high yields (up to 98%), regardless of the electronic properties of the substituents or the ring substitution pattern. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732142 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Zinc acetates as efficient catalysts for the synthesis of bis - isocyanate precursors / Elisenda Reixach in Industrial & engineering chemistry research, Vol. 49 N° 14 (Juillet 2010)
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[article]
Titre : Zinc acetates as efficient catalysts for the synthesis of bis - isocyanate precursors Type de document : texte imprimé Auteurs : Elisenda Reixach, Auteur ; Nuria Bonet, Auteur ; F. Xavier Rius-Ruiz, Auteur Année de publication : 2010 Article en page(s) : pp. 6362-6366 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Precursor Catalyst Résumé : Anhydrous and hydrated zinc acetates were found to efficiently catalyze alkoxycarbonylation of the aromatic diamines 2,4-toluenediamine (2,4-TDA) and 4,4'-diphenylmethane diamine (4,4'-MDA) with diethyl and dimethyl carbonate, providing the desired bis-carbamates in yields from 93 to 98%. Driving these reactions to completion required temperatures of ca. 190 °C for 2,4-TDA and ca. 180 °C for 4,4'-MDA, and alkyl carbonate-to-substrate molar ratios of 25 :1 to 30:1. Higher catalyst loadings were required for 2,4-TDA (2.5 mol %) than for 4,4'-MDA (I mol %). ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23040390
in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6362-6366[article] Zinc acetates as efficient catalysts for the synthesis of bis - isocyanate precursors [texte imprimé] / Elisenda Reixach, Auteur ; Nuria Bonet, Auteur ; F. Xavier Rius-Ruiz, Auteur . - 2010 . - pp. 6362-6366.
Industrial chemistry
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6362-6366
Mots-clés : Precursor Catalyst Résumé : Anhydrous and hydrated zinc acetates were found to efficiently catalyze alkoxycarbonylation of the aromatic diamines 2,4-toluenediamine (2,4-TDA) and 4,4'-diphenylmethane diamine (4,4'-MDA) with diethyl and dimethyl carbonate, providing the desired bis-carbamates in yields from 93 to 98%. Driving these reactions to completion required temperatures of ca. 190 °C for 2,4-TDA and ca. 180 °C for 4,4'-MDA, and alkyl carbonate-to-substrate molar ratios of 25 :1 to 30:1. Higher catalyst loadings were required for 2,4-TDA (2.5 mol %) than for 4,4'-MDA (I mol %). ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23040390 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire