THIENO[3,2-B]PYRIDINE Chemical Properties

Boiling point:

129-131℃ (16 Torr)

Density 

1.272±0.06 g/cm3 (20 ºC 760 Torr)

refractive index 

1.6391 (21℃)

Flash point:

100.2±10.2℃

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

pka

4.74±0.30(Predicted)

Safety Information

HS Code 

2934999090

THIENO[3,2-B]PYRIDINE Usage And Synthesis

Synthesis

General procedure for the synthesis of thieno[3,2-b]pyridine from 7-bromothieno[3,2-b]pyridine: 7-bromothieno[3,2-b]pyridine (3.69 g, 17 mmol) was dissolved in anhydrous THF (20 mL) and the solution was cooled to -78 °C. At -78 °C, n-BuLi (1.6 M hexane solution, 21.2 mL, 34 mmol) was slowly added and the reaction mixture was stirred at this temperature for 20 min. Subsequently, a mixed solution of MeOH/H2O (1:1, 20 mL) was added and the reaction mixture was warmed to room temperature and stirring was continued for 1 hour. Upon completion of the reaction, the reaction mixture was extracted with CH2Cl2. The organic phase was washed with saturated NaCl solution, dried over anhydrous Na2SO4 and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography with the eluent being 100% hexane to hexane:ethyl acetate (10:1) to afford thieno[3,2-b]pyridine (1.44 g, 62% yield). es/ms m/z 136 (M + 1)+.

References

[1] Patent: WO2008/36541, 2008, A1. Location in patent: Page/Page column 25
[2] Patent: WO2006/107784, 2006, A1. Location in patent: Page/Page column 89

THIENO[3,2-B]PYRIDINE(272-67-3)Related Product Information

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• Pseudothiohydantoin
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• 2-Thiophenecarboxaldehyde
• THIOPHEN-3-YLMETHYL-AMMONIUM CHLORIDE
• COPPER(I) THIOPHENE-2-CARBOXYLATE
• Thiophene-2,5-dicarbonitrile
• 2-Thiopheneacetic acid
• Ethyl thiophene-3-carboxylate
• THIENO[2,3-C]PYRIDINE
• 2,5-Thiophenedicarboxylic acid
• 5-(TRIFLUOROMETHYL)THIENO[3,2-B]PYRIDINE-6-CARBOXYLICACID