Phenylacetylene → [4-(3-Isobutoxy-5-phenylethynyl-benzylsulfanyl)-2-methyl-phenoxy]-acetic Acid Ethyl Ester

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The title product was prepared from [4-(3-Bromo-5-isobutoxy-benzylsulfanyl)-2-methyl-phenoxy]-acetic acid ethyl ester (300 mg; 0.64 mmol) and phenylacetylen (262 mg; 2.6 mmol) applying the procedure described for {4-[3-[2-(4-Chloro-phenyl)-ethoxy]-5-(4-hydroxymethyl-phenylethynyl)-phenylsulfanyl]-2-methyl-phenoxy}-acetic acid ethyl ester. The crude product was purified by preparative HPLC (method B). Yield: 130 mg (45%). HPLC-MS: m/z: 489.1 (M+H)+; Rt: 3.01 min

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