作者:Stojan Stavber、Marjan Jereb、Marko Zupan
DOI:10.1055/s-2002-35625
日期:——
bis(tetrafluoroborate) (Accufluor NFTh) as a fluorine atom transfer reagent and methanol as solvent enabled direct regiospecific fluorofunctionalization of the u-carbonyl position in ketones without prior activation of the target molecules. Methoxy or hydroxy substituted derivatives of 1-indanone, 1-tetralone and oxo derivatives of thiophene, benzo[b]thiophene, benzofuran and benzopyran were regiospecifically
使用 1-fluoro-4-hydroxy-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Accufluor NFTh) 作为氟原子转移试剂,使用甲醇作为溶剂,可以实现 u-羰基位置的直接区域特异性氟官能化在没有预先激活目标分子的酮体中。1-茚满酮、1-四氢萘酮的甲氧基或羟基取代衍生物以及噻吩、苯并[b]噻吩、苯并呋喃和苯并吡喃的氧代衍生物区域特异性地转化为相应的α-氟衍生物,而2α-氟-5α-胆甾醇-3-one (28) 和 16α-fluoro-3β-hydroxy-5α-androstan-17-one (30) 是直接从相应的酮类固醇开始的区域和立体特异性获得的。