Thiophene-3,4-dicarboxylic acid
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- CAS-Nr.
- 4282-29-5
- Englisch Name:
- Thiophene-3,4-dicarboxylic acid
- Synonyma:
- 100G,500G,1KG,10KG;3,4-THIOPHENEDICARBOXYLIC ACID;EA129;DK7284;3,4-Dicarboxythiophene;THIOPHENE-3,4-DICARBOXY;THIOPHENE-3,4-DICARBOXYLATE;Thiophene-3,4-DicarboxylicAci;THIOPHENE-3,4-DICARBOXYLIC ACID;THIOPHENE-3,4-DICARBOXYLIC ACID
- CBNumber:
- CB7769265
- Summenformel:
- C6H4O4S
- Molgewicht:
- 172.16
- MOL-Datei:
- 4282-29-5.mol
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Thiophene-3,4-dicarboxylic acid Eigenschaften
- Schmelzpunkt:
- 227-231 °C
- Siedepunkt:
- 272.46°C (rough estimate)
- Dichte
- 1.473 (estimate)
- Brechungsindex
- 1.5500 (estimate)
- storage temp.
- Keep in dark place,Sealed in dry,Room Temperature
- L?slichkeit
- soluble in Methanol
- Aggregatzustand
- Crystalline Powder
- pka
- 3.36±0.20(Predicted)
- Farbe
- Yellow to beige-pinkish or light brown
- maximale Wellenl?nge (λmax)
- 240nm(H2O)(lit.)
- InChI
- InChI=1S/C6H4O4S/c7-5(8)3-1-11-2-4(3)6(9)10/h1-2H,(H,7,8)(H,9,10)
- InChIKey
- ZWWLLYJRPKYTDF-UHFFFAOYSA-N
- SMILES
- C1SC=C(C(O)=O)C=1C(O)=O
Thiophene-3,4-dicarboxylic acid Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-S?tze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
yellow to beige-pinkish or light brown crystalline
Verwenden
Thiophene-3,4-dicarboxylic Acid is used in preparation of dibromo thienofuran dione.
Synthese
Thiophene-3,4-dicarbonitrile (13.4 g, 100 mmol) and KOH (56.1 g, 1 mol) were dissolved in ethylene glycol (167 ml), and heated under stirring overnight. The solution was cooled, put into distilled water, and washed with diethyl ether. The aqueous layer was oxidized with saturated hydrochloric acid, and organic materials were extracted with ethyl acetate. The organic layer was dried over MgSO and the4, solvent was evaporated Then, recrystallization was performed in distilled water to obtain thiophene-3,4-dicarboxylic acid (15.2 g, 88percent).
Thiophene-3,4-dicarboxylic acid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Kupfercyanid
N,N-Dimethylformamid
3,4-Dibromthiophen
Eisentrichlorid
2-Butenedioic acid, 2,3-dimethyl-, dimethyl ester, (2Z)-
diethyl 2-(diethoxymethyl)butanedioate
2-(Diethoxymethyl)-3-formylbutanedioic acid diethyl ester
3,4-Diiodothiophene
3,4-Thiophenedicarboxylic acid, diMethyl ester
DIETHYL FORMYLSUCCINATE
Dimethylmaleinsureanhydrid
3,4-DICYANOTHIOPHENE,
3,4-Thiophenedicarboxylic acid, diethyl ester
3,4-Thiophenedicarboxylic acid, 2,5-dihydro-, dimethyl ester
Kohlenstoffdioxid
Downstream Produkte
Thiophene-3,4-dicarboxylic acid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 243)Lieferanten
4282-29-5()Verwandte Suche:
- THIOPHENE-3,4-DICARBOXYLIC ACID
- 3,4-Thiophenedicarboxylic acid,97%
- 3,4-Dicarboxythiophene
- 3,4-Thiophenedicarboxylic acid ,98%
- THIOPHENE-3,4-DICARBOXYLATE
- THIOPHENE-3,4-DICARBOXY
- Thiophene-3,4-DicarboxylicAci
- THIOPHENE-3,4-DICARBOXYLIC ACID ISO 9001：2015 REACH
- EA129
- THIOPHENE-3,4-DICARBOXYLIC ACID 4282-29-5
- 3,4-THIOPHENEDICARBOXYLIC ACID
- 100G,500G,1KG,10KG
- DK7284
- 3,4-Thiophenedicarboxylic acid (6CI, 7CI, 8CI, 9CI, ACI)
- THIOPHENE-3,4-DICARBOXYLIC ACID
- 4282-29-5
- Building Blocks
- Carboxy
- Thiophene
- API intermediates
- Acids and Derivatives
- Heterocycles
