Tetronic acid of following Formula (2):
is industrially efficiently prepared through a reaction of 4-hydroxy- or 4-alkoxy-acetoacetic acid or an ester thereof of following Formula (1):
wherein R1 and R2 each independently represent a hydrogen atom or an alkyl group, by carrying out the reaction in the presence of an organic solvent and an acid but substantially in the absence of water. Product tetronic acid is useful as an intermediate for fine chemicals such as pharmaceuticals, agricultural chemicals, and semiconductor resist polymers.
以下是Formula (2)的Tetronic酸,通过在有机溶剂和酸的存在下但基本上缺乏
水的条件下,通过以下Formula (1)的
4-羟基或4-烷氧基
乙酰乙酸或其酯的反应来高效地工业制备:其中R1和R2分别独立表示氢原子或烷基团。产物Tetronic酸作为
精细化学品的中间体,如制药、农药和半导体抗蚀聚合物,具有实用价值。