申请人:Texaco Chemical Company
公开号:US05276192A1
公开(公告)日:1994-01-04
A process for preparing phenoxyethanamines from phenols and 2-oxazolines in quantitative yields was discovered. Phosphoric acid hydrolyzes the amide intermediate from the phenol/2-oxazoline reaction without cleaving the amide at the ether linkage and without undesired aromatic ring substitution. Thus, yield to the desired phenoxyethanamines is often 98% or better, requiring no subsequent purification. In contrast, sulfuric and hydrochloric acids give these undesired side reactions. Phenoxyethanamines are useful in thermosetting resins, pharmaceuticals and as surfactants.
发现了一种从酚和2-噁唑烷醇制备苯氧乙胺的过程,收率达到定量。磷酸水解酚/2-噁唑烷醇反应中的酰胺中间体,而不会在醚键处裂解酰胺,也不会发生意外的芳香环取代。因此,得到期望的苯氧乙胺的收率通常为98%或更高,无需进一步纯化。相比之下,硫酸和盐酸会导致这些不良的副反应。苯氧乙胺在热固性树脂、药物和表面活性剂中具有用途。