Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Acylation of o-Cresol with Pyromellitic Dianhydride
Abstract The acylation of o-cresol with pyromellitic dianhydride (PMDA) has been experimentally studied. The optimum conditions of the acylation reaction of o-cresol with PMDA have been determined. The synthesis has been performed in o-cresol melt at 120°C for 30 h at a reactant molar ratio of PMDA : o-cresol : SnCl4 = 1.0 : 4.1 : 2.0. The yield of 3,3,7,7-tetrakis(3-methyl-4-oxyphenyl)pyromellitide is 62.0% of the theoretical value. The structure of the target synthesis product has been proven by instrumental methods, namely, elemental analysis; thin layer chromatography (TLC); UV, IR, and 1H NMR spectroscopy; DSC; and high-performance liquid chromatography coupled with mass spectrometry (HPLC/MS). The revealed properties of 3,3,7,7-tetrakis(3-methyl-4-oxyphenyl)pyromellitide allow it to be recommended as a tracer for oil reservoir evaluation.
Acylation of o-Cresol with Pyromellitic Dianhydride
Abstract The acylation of o-cresol with pyromellitic dianhydride (PMDA) has been experimentally studied. The optimum conditions of the acylation reaction of o-cresol with PMDA have been determined. The synthesis has been performed in o-cresol melt at 120°C for 30 h at a reactant molar ratio of PMDA : o-cresol : SnCl4 = 1.0 : 4.1 : 2.0. The yield of 3,3,7,7-tetrakis(3-methyl-4-oxyphenyl)pyromellitide is 62.0% of the theoretical value. The structure of the target synthesis product has been proven by instrumental methods, namely, elemental analysis; thin layer chromatography (TLC); UV, IR, and 1H NMR spectroscopy; DSC; and high-performance liquid chromatography coupled with mass spectrometry (HPLC/MS). The revealed properties of 3,3,7,7-tetrakis(3-methyl-4-oxyphenyl)pyromellitide allow it to be recommended as a tracer for oil reservoir evaluation.
Acylation of o-Cresol with Pyromellitic Dianhydride
Nekhoroshev, V. P. ( Autor:in ) / Knyazev, A. S. ( Autor:in ) / Nifant’ev, I. E. ( Autor:in )
Petroleum Chemistry ; 59 ; 1240-1244
01.11.2019
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Fire safety of thermoplastic polyurethane based on pyromellitic dianhydride
| British Library Online Contents | 2018
Pyromellitic Dianhydride-Modified Chitosan Microspheres for Enhancement of Cationic Dyes Adsorption
| British Library Online Contents | 2009
Functional peroxides and peroxy oligoesters on the basis of pyromellitic dianhydride
| British Library Online Contents | 2002
| British Library Online Contents | 2013