US Patent 7202369 Processes for preparing of 3,4-alkylenedioxythiophenes and 3,4-dialkoxythiophenes
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Patent Inventor Names
Hee-Jung Hong0
Sang-Gook Jung0
Woon-Phil Baik0
Young-Sam Kim0
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Patent abstract
The present invention relates to a process for preparing 3,4-dialkoxythiophenes or 3,4-alkylenedioxythiophenes in high yield via the rapid decarboxylation of 3,4-dialkoxythiophenedicarboxylic acid or 3,4-aklylenedioxythiophenedicarboxylic acid in a water-miscible polar solvent in the presence of copper catalyst under an oxygen atmosphere.
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US Patent 07202369 Processes for preparing of 3,4-alkylenedioxythiophenes and 3,4-dialkoxythiophenes US Patent 7202369 Processes for preparing of 3,4-alkylenedioxythiophenes and 3,4-dialkoxythiophenes
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Patent Number
072023690
Patent Number
72023690
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Patent Jurisdiction
Patent Number
072023690
Date of Patent
April 10, 2007
0Patent Application Number
107158450
Date Filed
November 19, 2003
0Official Website
Patent Primary Examiner
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US Patent 07202369 Processes for preparing of 3,4-alkylenedioxythiophenes and 3,4-dialkoxythiophenes
Infobox
Is a
Patent jurisdiction
Patent number
07202369
Date of patent
April 10, 2007
Patent application number
10715845
Date Filed
November 19, 2003
Patent primary examiner
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