Reactions of novel trifluoromethyl propargylic carbocation with carbon nucleophiles
作者:Sung Lan Jeon、Joa Kyum Kim、Jang Bae Son、Bum Tae Kim、In Howa Jeong
DOI:10.1016/j.tetlet.2006.10.088
日期:2006.12
Trifluoromethyl propargylic carbocation [I] generated from the reaction of 1-amino substituted 3-trifluoromethyl-2-propynyl trimethylsilyl ether 1 with TMSOTf in CH2Cl2 at −15 °C, followed by warming to room temperature reacted with 1.2 equiv of substituted benzenes, RMgBr and allylsilane to give the enones 3a–l and 5, respectively. The reaction of [I] with anisole, followed by treatment with Grignard reagents
1-氨基取代的3-三氟甲基-2-丙炔基三甲基甲硅烷基醚1与TMSOTf在-15°C下的CH 2 Cl 2中反应,然后升温至室温,与1.2当量的取代基反应,生成三氟甲基炔丙基碳正离子[I]苯,RMgBr和烯丙基硅烷分别得到烯酮3a - 1和5。[I]与苯甲醚反应,然后用格氏试剂处理,得到相应的烯丙基胺衍生物7,其通过使用2当量的TMSOTf进行环化反应以得到茚衍生物8。