Stereoselective Azepine-Ring Formation Through Ene Reactions of 3-(Alk-2-enyl)amino-2-cyanoacrolein Derivatives
作者:Michihiko Noguchi、Hisashi Yamada、Shinji Takamura、Takehiko Uchida、Mitsuko Hironaka、Akikazu Kakehi、Hidetoshi Yamamoto
DOI:10.1002/(sici)1099-0690(200004)2000:8<1489::aid-ejoc1489>3.0.co;2-z
日期:2000.4
The reaction of 3-[N-(alk-2-enyl)benzylamino]-2-cyanoacroleins 9 with primary amines 12 and 13 gave 4,5-dihydro-1H-azepines 14 and 15 stereoselectively, through an intramolecular ene reaction of the imine derivatives of 9. Similarly, carbonyl-ene reaction of acrolein derivatives 9, and olefin-ene reaction of their conjugated diene compounds 22, and 24-27 are also discussed. These ene reactions established
3-[N-(alk-2-enyl)benzylamino]-2-cyanoacroleins 9 与伯胺 12 和 13 的反应得到 4,5-dihydro-1H-azepines 14 和 15 立体选择性,通过分子内烯反应9 的亚胺衍生物。类似地,还讨论了丙烯醛衍生物 9 的羰基-烯反应,以及它们的共轭二烯化合物 22 和 24-27 的烯烃-烯反应。这些烯反应为单环氮杂环的形成建立了一种有效的合成方法。