Reaction of β-Nitroketeneaminal with Olefins Bearing Electron-Withdrawing Group and Aldehydes
作者:Takao Tokumitsu
DOI:10.1246/bcsj.63.1921
日期:1990.7
The reaction of 2-(nitromethylene)imidazolidine (1) with olefins bearing an electron-withdrawing group gave Michael-type addition products and/or 5-nitro-1,7-diazabicyclo[4.3.0]nonane derivatives derived from the Michael-type adduct. The reaction of 1 with α,β-unsaturated aldehydes in the presence of an acid, on the other hand, gave similar diazabicyclic derivatives and 2-[(2-imidazolidinylidene)n
2-(硝基亚甲基)咪唑烷 (1) 与带有吸电子基团的烯烃反应得到迈克尔型加成产物和/或 5-硝基-1,7-二氮杂双环[4.3.0]壬烷衍生物,衍生自迈克尔-类型加合物。另一方面,1 与 α,β-不饱和醛在酸存在下反应,得到类似的二氮杂双环衍生物和 2-[(2-imidazolidinylidene)nitromethylene]-5-nitro-1,7-diazabicyclo[4.3 .0]非5-烯衍生物。在盐酸存在下,1 与饱和和芳香醛反应得到 1,3-双(2-咪唑烷亚基)-1,3-二硝基丙烷衍生物。1 增强的烯胺特性归因于固定在五元环中的两个给电子氨基。