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

HRID 1270687노트

반응식

HRID 1270687 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>[Cu].C(O)CO>[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 98.9%

시약·촉매·용매 2

HCID 23978Copper촉매HCID 174Ethylene Glycol용매

실험 절차

3,4-Ethylenedioxy-2,5-thiophenedicarboxylic acid (460 g) and a copper powder (69 g) were added to ethylene glycol (1400 g) at room temperature. The reaction mixture was stirred under air for 30 minutes at room temperature, and air was continuously introduced into the reaction mixture. The reaction mixture was then heated at 140° C. for 8 hours. After the reaction was complete, the reaction mixture was purified using the same process as described in Example 1 to obtain 3,4-ethylenedioxythiophene (281 g, purity: 98%).

후처리

  1. additionair was continuously introduced into the reaction mixture
  2. temperatureThe reaction mixture was then heated at 140° C. for 8 hours
  3. customthe reaction mixture was purified

출처 및 근거

ORD 기록
ord-5434fbfa565d460d8375d7dc18e5f548
출처 데이터셋
uspto-grants-2007_04
특허 번호
US07202369B2

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