Non-Steroidal antiinflammatory agents.<b>1</b>. A novel synthesis of 1-methyl-5-<i>p</i>-tolylpyrrole-2-acetic acid (tolmetin)
作者:Marino Artico、Federico Corelli、Silvio Massa、Giorgio Stefancich
DOI:10.1002/jhet.5570190647
日期:1982.11
A four-step preparation of 1-methyl-5-p-totylpyrrole-2-acetic acid (Tolmetin) is reported starting from 1-methyl-2-p-tolylpyrrole. Formylation of this compound followed by condensation with methyl(methylthio)-methyl sulfoxide furnished 1-(methylsulfinyl)-1-methylthio-2-(1-methyl-5-p-tolyl-2-pyrrolyl)ethylene. Pummerer rearrangement of the latter compound gave ethyl 1-methyl-5-p-tolylpyrrole-2-acetate
据报道,从1-甲基-2-对甲苯基吡咯开始,分四步制备1-甲基-5-对甲苯基吡咯-2-乙酸(托美汀)。该化合物的甲酰化,然后与甲基(甲硫基)-甲基亚砜缩合,得到1-(甲基亚磺酰基)-1-甲硫基-2-(1-甲基-5-对甲苯基-2-吡咯基)乙烯。后一种化合物的Pummerer重排得到1-甲基-5-对甲苯基吡咯-2-乙酸乙酯,将其在碱性介质中水解,得到托美汀。