5,5'-DIACETYL-2,2'-BITHIENYL synthesis

11synthesis methods

Product Name:5,5'-DIACETYL-2,2'-BITHIENYL
CAS Number:18494-73-0
Molecular formula:C12H10O2S2
Molecular Weight:250.34

492-97-7 Synthesis

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Yield:18494-73-0 77%

Reaction Conditions:

with phosphoric acid for 1 h;Reflux;

Steps:

37 Synthesis of intermediate compound 37a

2,2'-dithiophene (0.03 mol, 4.98 g) was dissolved in 75 ml of acetic anhydride, and then 12 drops of 85% phosphoric acid were added dropwise to the reaction solution, and then heated under reflux for 1 h. Stop the reaction, pour the reaction solution into 500 g of ice water, and stir until the acetic anhydride is completely hydrolyzed. The crude product was filtered, and the crude product was recrystallized from 2,6-dioxane to obtain 5.8 g of a pale yellow solid with a yield of 77%, which was identified as the intermediate compound 37a.

References:

CN110551098,2019,A Location in patent:Paragraph 0157-0162