Chin. J. Org. Chem. ›› 1994, Vol. 14 ›› Issue (1): 80-83. Previous Articles     Next Articles

Original Articles

对苯醌-2,5-二羧酸酯的合成

管晓培;于永忠   

  1. 北京理工大学化工与材料学院
  • 发布日期:1994-02-25

The synthesis of benzoquinone-2,5-dicarboxylates

YU YONGZHONG   

  • Published:1994-02-25

Hydroquinone-2,5-dicarboxylates (2a,b) were oxidized by active MnO~2 to benzoquinone -2,5- dicarboxylates (3a,b) in high yield. Diethyl hydroquinone -2,5-dicarboxylate (2b) was also oxidized by PhI(O~2CCF~3)~2 to the corresponding benzoquinone 3b, which could be trapped with cyclopentadiene as well as further reacted with CF~3CO~2H produced in the reaction, When 2mol PhI(O~2CCF~3)~2 was used, diethyl 3,6-bis (trifluoroacetoxy)-hydroquinone-2,5-dicarboxylate (6) was obtained. However, in the presence of pyridine, 6-pyridinio-hydroquinone-2,5-dicarboxylate trifluoroacetate (8) was produced.

Key words: CARBOXYLIC ACID ESTER, QUINONE, OXIDATION, ADDITION REACTION

CLC Number: