4]thiadiazol-5-ylmethoxy)phenoxy)propionic acid sodium salt (17) is described and compared with earlier in-house preparations of this important target compound. Key concerns around a large-scale synthesis of this thiadiazole derivative were a large number of purification steps, the use of dichlorobenzene as a solvent, and a possible large-scale Baeyer–Villiger oxidation. This paper describes a straightforward preparation
PPARα,δ激动剂
2-甲基-2-(
2-甲基-4-(3-(4-(三
氟甲基)
苯基)[1,
2,4]
噻二唑-5-基甲
氧基)
苯氧基)
丙酸钠的制备描述了该盐(17)并将其与该重要目标化合物的内部更早制备方法进行了比较。大规模合成该
噻二唑衍
生物的关键问题是大量的纯化步骤,使用二
氯苯作为溶剂以及可能的大规模拜尔-维利格
氧化。本文介绍了使用
甲基氢醌(
MHQ)作为廉价的前体直接制备目标激动剂的方法,该方法无需进行
氧化步骤。