Sodium borohydride → HCID 66637988, compound

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Reaction Steps

Crude 2-(3,4-dimethoxy-benzoylamino)-5-formylthiophene-3-carboxylic acid methyl ester (35 mg) synthesized by the above process was dissolved in tetrahydrofuran/N,N-dimethylformamide=1/1 (10 ml). Sodium borohydride (22 mg) was added to the solution at room temperature, and the mixture was stirred at that temperature for 20 min. After the completion of the reaction, distilled water was added thereto at room temperature, and the mixture was subjected to separatory extraction with chloroform. The organic layer was washed with saturated brine, was dried over sodium sulfate, and was then concentrated under the reduced pressure to give crude 2-(3,4-dimethoxy-benzoylamino)-5-hydroxymethyl-thiophene-3-carboxylic acid methyl ester (35 mg, crude yield 100%).

Provenance & Evidence