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ChemicalBook CAS DataBase List 5-Formyl-3-thiophenecarboxylic acid
89324-44-7

5-Formyl-3-thiophenecarboxylic acid synthesis

6synthesis methods
67808-66-6 Synthesis
Methyl 2-formyl-4-thiophenecarboxylate

67808-66-6
140 suppliers
$39.00/1g

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Yield:89324-44-7 632 mg

Reaction Conditions:

with hydrogenchloride;water at 100;

Steps:

44.2 The second step: the preparation of 5-formylthiophene-3-carboxylic acid (44-b)

Dissolve methyl 5-formylthiophene-3-carboxylate (44-a, 700 mg, 4.54 mmol) in hydrochloric acid (6M) (10 mL) at room temperature,After the addition, the reaction solution was stirred at 100° C. for 1 hour, and the reaction solution was concentrated under reduced pressure to obtain 5-formylthiophene-3-carboxylic acid (44-b, 632 mg).

References:

WO2023/20479,2023,A1 Location in patent:Page/Page column 72