4-Fluorobenzyl chloride → HCID 21098731, compound

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Reaction Steps

To a solution of 5-acetyl-2-amino-thiophene-3-sulfonic acid [2-(4-fluorophenyl)-2-hydroxy-ethyl]-methyl-amide (the compound of Preparation Example 99) (120 mg) in ethyl acetate-tetrahydrofuran (4:1) (30 mL) was added an aqueous solution (10 mL) of 2N sodium hydroxide. After stirring vigorously at room temperature, 4-fluorobenzyl-chloride (51 mg) was added. After 30 minutes, an aqueous solution (10 mL) of 2N sodium hydroxide, then 4-fluorobenzoyl-chloride (100 mg) were added, and the solution was stirred for 30 minutes. In addition, an aqueous solution (10 mL) of 2N sodium hydroxide, then 4-fluorobenzoyl-chloride (100 mg) were added. After stirring for 30 minutes, extraction was carried out by adding ethyl acetate, and the organic layer was dried with anhydrous magnesium sulfate. Purification was carried out by purification with silica gel column chromatography (hexane/ethyl acetate), and the title compound (59 mg) was obtained as yellow solids.

Provenance & Evidence