The rhodium(II)-catalysed reaction of the diazoketone derived from 5-(4-methoxybenzoyl)-2,3-dihydropyrrolizin-1-carboxylic acid (anirolac) did not give the expected intramolecular cyclisation product but afforded the 2,3-dihydropyrrolizin-1-one only an elimination product. X-ray studies confirmed the structure.
由 5-(4-甲氧基苯甲酰基)-2,3-二氢吡咯烷-1-羧酸 (anirolac) 衍生的重氮酮的铑 (II) 催化反应没有得到预期的分子内环化产物,但得到了 2,3-二氢吡咯烷-1-one 只是一个消除产品。X射线研究证实了这种结构。