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

HRID 1270688

반응식

HRID 1270688 반응식
[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

참가 물질

4

반응물 1

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

생성물 1

HCID 44218643,4-Ethylenedioxythiophene수율 95.7%

시약·촉매·용매 2

HCID 14452Copper carbonate촉매HCID 6228Dimethylformamide용매

반응 조건

온도
120 °C

실험 절차

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%).

후처리

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

출처 및 근거

ORD 기록
ord-c0afad15774543e79cc67598afc32074
출처 데이터셋
uspto-grants-2007_04
특허 번호
US07202369B2

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