2,3-Dihydro-thieno(3,4-b)(1,4)dioxin-5,7-dicarboxylic acid → 3,4-Ethylenedioxythiophene

HRID 1270688

反応式

HRID 1270688 の反応式
[CH2:1]1[CH2:9][O:8][C:7]2[C:3](=[C:4](C(O)=O)[S:5][C:6]=2C(O)=O)[O:2]1>C(=O)([O-])[O-].[Cu+2].CN(C=O)C>[CH2:1]1[CH2:9][O:8][C:7]2[C:3](=[CH:4][S:5][CH:6]=2)[O:2]1

参加物

4

反応物 1

HCID 7288412,3-Dihydro-thieno(3,4-b)(1,4)dioxin-5,7-dicarboxylic acid

生成物 1

HCID 44218643,4-Ethylenedioxythiophene収率 95.7%

試薬・触媒・溶媒 2

HCID 14452Copper carbonate触媒HCID 6228Dimethylformamide溶媒

反応条件

温度
120 °C

実験手順

3,4-Ethylenedioxythiophene-2,5-dicarboxylic acid (230 g) and basic copper carbonate (23 g) were added to DMF (600 g) at room temperature. While air was slowly introduced to the reaction mixture, it as heated at 120° C. for 5 hours. After cooling, the reaction mixture was purified using the same process as described in Example 1 to obtain 3,4-ethylenedioxythiophene (136 g, purity: 97%).

後処理

  1. additionWhile air was slowly introduced to the reaction mixture, it
  2. temperatureAfter cooling
  3. customthe reaction mixture was purified

出典と根拠

ORDレコード
ord-c0afad15774543e79cc67598afc32074
出典データセット
uspto-grants-2007_04
特許番号
US07202369B2

関連ノート

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