AEROBIC OXIDATIVE ESTERIFICATION OF SUGAR-DERIVED 1,4-DISUBSTITUTED BENZENE FOR DIRECT SYNTHESIS OF DIMETHYLTEREPHTHALATE

• Main Authors: LATTNER, JAMES, R, KANDEL, KAPIL, SHIRAMIZU, MIKA
• Format: Patent
• Language: English; French
• Published: 06.05.2016
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

This invention relates to a dimethylterephthalate production process comprising reacting substituted furan with ethylene under cycloaddition reaction conditions and in the presence of a cycloaddition catalyst to produce a bicyclic ether, dehydrating the bicyclic ether to produce a substituted phenyl, dissolving said substituted phenyl in methanol, and oxidizing and esterifying the substituted phenyl in the presence of an oxidative esterification catalyst to form dimethylterephthalate. Importantly, the process does not include oxidizing the substituted phenyl to form terephthalic acid. La présente invention concerne un procédé de production de téréphtalate de diméthyle comprenant la réaction de furane substitué avec de l'éthylène dans des conditions de réaction de cycloaddition et en présence d'un catalyseur de cycloaddition pour produire un éther bicyclique, la déshydratation de l'éther bicyclique pour produire un phényle substitué, la dissolution dudit phényle substitué dans du méthanol, et l'oxydation et l'estérification du phényle substitué en présence d'un catalyseur d'estérification oxydative pour former du téréphtalate de diméthyle. Il est important de noter que le procédé ne comprend pas d'oxydation du phényle substitué pour former de l'acide téréphtalique.