The reactions of aliphatic β-amino-β-trifluoromethylvinyl ketones with an excess of ethylenediamine at room temperature afforded the corresponding 2,3-dihydro-1H-1,4-diazepines or substituted 2-acetonyl-2-trifluoromethylimidazolidines (the latter were obtained when the approach to the carbonyl group was sterically hindered).
脂肪族β-
氨基-β-三
氟甲基
乙烯基酮与过量
乙二胺在室温下反应得到相应的2,3-二氢-1H-1,4-二氮杂或取代的2-
丙酮基-2-三
氟甲基
咪唑烷(后者得到当接近羰基时受到空间位阻)。