2,2-Bis(trifluormethyl)-4,5-dihydro-1,3,5-triazepine aus 4,4-bis-(triflourmethyl)-1,3-diazabuta-1,3-dienen [1]

✍ Scribed by Klaus Burger; Thomas Kahl

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 270 KB
• Volume: 42
• Category: Article
• ISSN: 0022-1139
• DOI: 10.1016/s0022-1139(00)83966-4

✦ Synopsis

D-6700 Ludwigshafen am Rhein (B.R.D.) ZUSAMMENFASSUNG 4,4-Bis(trifluormethyl)substituierte Hetero-1,3-diene l-3 reagieren mit == 2,3-Diphenyl-2H-azirin 2 unter C4+2]-Cycloaddltion. Die Verbindungen 1 liefern helm Erhitzen in Gegenwart van Skren 2,2-Bis(trlfluormethyl)-4,5dihydro-1,3,5-triazepine 8. = SUMMARY 4,4 -Bis(trifluoromethyl)substltuted hetero-1,3-dienes 1-1 and 2,3-dlphenyl-2H-azrrine 4 react to give [4+2] cycloadducts 5-7. Compounds 2 on == heating in the presence of acids rearrange to give 2,2_bis(trifluoromethyl)-4,5-dihydro-1,3,5-trlazepines 8. =