2,6-Dibromodithieno[3,2-b:2',3'-d]thiophene Chemical Properties

Melting point:

171℃ (chloroform methanol )

Boiling point:

447.9±40.0 °C(Predicted)

Density 

2.234±0.06 g/cm3(Predicted)

storage temp. 

2-8°C

solubility 

soluble in Toluene

form 

powder to crystal

color 

White to Light yellow to Green

Safety Information

Hazard Codes 

Xn

Risk Statements 

22-36

Safety Statements 

26

WGK Germany 

3

HS Code 

29349990

2,6-Dibromodithieno[3,2-b:2',3'-d]thiophene Usage And Synthesis

Chemical Properties

White to yellow to tan solid

Synthesis

General procedure for the synthesis of 2,5-dibromodithieno[3,2-B:2',3'-D]thiophene using dithieno[3,2-B:2',3'-D]thiophene as starting material: at 0 °C, N-bromosuccinimide (5.87 g, 33 mmol) was slowly added to dithieno[3,2-B:2',3'-D]thiophene (Aldrich, 2.94 g, 2.94 g, 2.94 g, 1.5 mmol) dissolved in an anhydrous DMF (60 mL). 15 mmol) was dissolved in a solution of anhydrous DMF (60 mL). The reaction mixture was gradually warmed to room temperature and stirred overnight. Subsequently, the reaction solution was poured into water and the precipitate precipitated was collected. The precipitate was washed with methanol and recrystallized in a chloroform/methanol solvent mixture to finally obtain off-white crystals of 2,5-dibromodithieno[3,2-B:2',3'-D]thiophene (yield: 5.14 g, 97%).1H NMR (500 MHz, CDCl3): δ 7.28 (s, 2H).

References

[1] Journal of Materials Chemistry, 2012, vol. 22, # 33, p. 16810 - 16816
[2] Patent: US2013/207081, 2013, A1. Location in patent: Paragraph 0081; 0082; 0083
[3] Angewandte Chemie - International Edition, 2015, vol. 54, # 9, p. 2734 - 2738
[4] Angew. Chem., 2015, vol. 127, # 9, p. 2772 - 2776,5
[5] Patent: CN105646528, 2016, A. Location in patent: Paragraph 0069; 0070

2,6-Dibromodithieno[3,2-b:2',3'-d]thiophene(67061-69-2)Related Product Information

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