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CAS No. : | 3779-27-9 | MDL No. : | MFCD00052294 |
Formula : | C9H6OS2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | FYBWRAXKYXTOQC-UHFFFAOYSA-N |
M.W : | 194.27 | Pubchem ID : | 364428 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P301+P312-P302+P352-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
In water; ethyl acetate; | Step B 5-(Thien-2-yl)-thiophene-2-carboxaldehyde To a solution of thien-2-ylboronic acid (0.939 g, 7.34 mmol) and Na2 CO3 (2.40 g, 22.6 mmol) in water (75 mL) is added p-dioxane (75 mL). This mixture is treated sequentially with 5-carboxy-2-thiophenecarboxaldehyde (1.43 g, 7.48 mmol) and palladium (II) acetate (151 mg, 0.673 mmol) and allowed to stir at ambient temperature for 16 hours. The solvent is evaporated in vacuo. To the residue is added EtOAc (400 mL) and water (300 mL). The aqueous layer is acidified to pH 1 with 1.0N aq. HCl. The aqueous layer is extracted with EtOAc (2*200 mL). The organic extracts are combined, washing with brine (200 mL), 5percent aq. Na2 S2 O3 (200 mL), sat. aq. NaCl (200 mL), drying (Na2 SO4), and the solvent evaporation in vacuo affords the title compound. |