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CAS No. : | 4282-29-5 | MDL No. : | MFCD00067079 |
Formula : | C6H4O4S | Boiling Point : | No data available |
Linear Structure Formula : | SC4H2(COOH)2 | InChI Key : | ZWWLLYJRPKYTDF-UHFFFAOYSA-N |
M.W : | 172.16 | Pubchem ID : | 255853 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetic anhydride; sodium bromide; In dimethyl sulfoxide; at 20 - 120℃; for 16.1h; | 10mmol 3,4-dicarboxythiophene (1.72g), 40mmol NaBr (4.12g), 40mmol DMSO (3.12g) were added to 300mmol acetic anhydride (28.3mL), and stirred at room temperature for 10min. The temperature was increased to 120C to continue the reaction for 16 hours, and then the temperature was reduced to room temperature. The precipitated crystals were collected by filtration and washed twice with n-hexane (10 mL×2), The final product 4,6-dibromo-thienofuran-1,3-dione 2.43g, with a yield of 78%, The purity is 93%. |
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