Regioselective ring opening of 2-methylaziridine derivatives with 18F- and 19F-fluoride
作者:Erik M. van Oosten、Michael Gerken、Paul Hazendonk、Roxanne Shank、Sylvain Houle、Alan A. Wilson、Neil Vasdev
DOI:10.1016/j.tetlet.2011.05.139
日期:2011.8
Regioselectivity of the nucleophilic ring opening of N-benzoyl (Bz) and N-benzyloxycarbonyl (Cbz) activated 2-methylaziridines with anhydrous tetramethylammonium fluoride, anhydrous hydrogen fluoride, and 19F or [18F]-labelled potassium cryptand fluoride ([K222][18/19F]) were investigated. Whereas all reactions with rigorously anhydrous N(CH3)4F did not ring-open the aziridines, reactions with anhydrous
的亲核开环的区域选择性ñ -苯甲酰基(BZ)和ñ -苄氧羰基(Cbz)活化2- methylaziridines用无水四甲基氟化铵,无水氟化氢,和19 F或[ 18 F] -标记钾穴状配体二氟乙烯([K 222 ] [ 18/19 F])进行了调查。尽管所有与无水N(CH 3)4 F严格反应均未使氮丙啶开环,但与无水HF反应仅产生2-氟丙胺衍生物。Bz保护和Cbz保护的2-甲基氮丙啶与[K 222 ] [ 18/19F]分别产生2-氟丙胺衍生物和1-氟-2-丙胺衍生物作为主要产物,并且代表在氮丙啶与[ 18 F]-氟化物开环期间区域控制的第一个实例。