It is described an industrially viable and advantageous process for the preparation of racemic beta-aminosulfone (1), an useful intermediate for the preparation of N-(2-((1S)-1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl)-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl)acetamide, also known as Apremilast, the latter being suitable for use in methods of treating, preventing and/or managing psoriasis or psoriatic arthritis.
本发明描述了制备外消旋β-
氨基砜(1)的一种工业上可行且有利的工艺,β-
氨基砜(1)是制备N-(2-((1S)-1-(3-乙氧基-4-
甲氧基苯基)-2-(甲磺酰基)乙基)-2、后者适用于治疗、预防和/或控制
银屑病或
银屑病关节炎的方法。