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

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Basic information
Product Name:4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid
Synonyms:4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid 96%;4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid;4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic Acid;4,6-dihydrothieno[2,3-c]thiophene-2-carboxylic acid;4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylicAcid>;Thieno[3,4-b]thiophene-2-carboxylic acid, 4,6-dihydro-
CAS:7712-05-2
MF:C7H6O2S2
MW:186.25
EINECS:
Product Categories:
Mol File:7712-05-2.mol
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Structure
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
pka3.56±0.20(Predicted)
color Light orange to Yellow to Green
InChIKeyRBINIIIGSUWMLQ-UHFFFAOYSA-N
Safety Information
HS Code 2934999090
MSDS Information
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Usage And Synthesis
Uses4,6-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.
Synthesis1.png
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%).
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Preparation Products And Raw materials
Raw materialsAKOS B019308-->Methyl 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylate-->METHYL THIOPHENE-2-CARBOXYLATE
TETRABROMO-THIENO[3,2-B]THIOPHENE

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