Invention Application
US20160115113A1 Aerobic Oxidative Esterification of Sugar-Derived 1,4-Disubstituted Benzene for Direct Synthesis of Dimethylterephthalate
审中-公开
糖衍生的1,4-二取代苯的有氧氧化酯化用于直接合成对苯二甲酸二甲酯
- Patent Title: Aerobic Oxidative Esterification of Sugar-Derived 1,4-Disubstituted Benzene for Direct Synthesis of Dimethylterephthalate
- Patent Title (中): 糖衍生的1,4-二取代苯的有氧氧化酯化用于直接合成对苯二甲酸二甲酯
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Application No.: US14877545Application Date: 2015-10-07
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Publication No.: US20160115113A1Publication Date: 2016-04-28
- Inventor: Mika Shiramizu , James R. Lattner , Kapil Kandel
- Applicant: ExxonMobil Chemical Patents Inc.
- Main IPC: C07C67/03
- IPC: C07C67/03 ; C07C37/52
Abstract:
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.
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