Niu Tie
2007
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0
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Journal
Jilin Normal University Journal
Abstract
1,4—Dihydro—2,6—dimethy1—3,5—pyridine dicarboxylic ethyl ester was aromatized by refluxing reaction for 36 hours in C6H6/50%NaOH in the presence of phase transfer catalyst to give 1,4—Dihydro—2,6—dimethy1—3,5—pyridine dicarboxylic acid in high yield.