Unusual CC Bond Migration in 3-Ylidene-2,5-piperazinediones

✍ Scribed by Shangde Jin; Pablo Wessig; Jürgen Liebscher

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 298 KB
• Volume: 2000
• Category: Article
• ISSN: 1434-193X
• DOI: 10.1002/(sici)1099-0690(200005)2000:10<1993::aid-ejoc1993>3.0.co;2-i

✦ Synopsis

Treatment of 3-alkylidene or 3-benzylidene-2,5-piperazinediones 6 with catalytic amounts of acid gives rise to the formation of isomers 7 by migration of the C=C bond into the