✦ LIBER ✦
[2+2]-Cycloaddition von Ketenen an «Maleinisoimide» und Überführung der spiroverknüpften b̃-Laktame in Muconsäure- und Tetramsäurederivate
✍ Scribed by Hans-Georg Capraro; Pierre Martin; Tammo Winkler
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- German
- Weight
- 935 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
[2+2]‐Cycloaddition of ‘Maleic Isoimides’ with Ketenes and Reactions of Spiro‐b̃‐lactams to Muconic and Tetramic Acids
The [2 + 2]‐cycloaddition of iminolactones of type 2 (‘maleic isoimides’) with various ketenes affords spiro‐b̃‐lactams 4–6. These highly functionalized compounds react with CH~3~ONa giving ketoadipinic acid derivatives 12 and/or pyrrolidinediones 7, depending on the reaction temperature and the nature of substituents.