4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Chemical Properties

Melting point:

240°C(lit.)

Boiling point:

419.0±45.0 °C(Predicted)

Density 

1.551

storage temp. 

2-8°C(protect from light)

form 

powder to crystal

pka

3.56±0.20(Predicted)

color 

Light orange to Yellow to Green

InChI

InChI=1S/C7H6O2S2/c8-7(9)5-1-4-2-10-3-6(4)11-5/h1H,2-3H2,(H,8,9)

InChIKey

RBINIIIGSUWMLQ-UHFFFAOYSA-N

SMILES

C12CSCC=1C=C(C(O)=O)S2

Safety Information

HS Code 

2934999090

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Usage And Synthesis

Uses

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid can be used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development processes and pharmaceutical and chemical production processes.

Synthesis

Compound 3 was dissolved in ethanol,Potassium hydroxide was added and refluxed at 78 ° C for 4 h,After cooling to room temperature (25 ° C), the reaction solution was extracted with IM HCl, extracted with ethyl acetate, dried over Mg2SO4 and dried to give the title compound 4 (92%).

References

[1] Patent: CN106317070, 2017, A. Location in patent: Paragraph 0127

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid(7712-05-2)Related Product Information

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