作者:Lukas Zygalski、Christoph Middel、Klaus Harms、Ulrich Koert
DOI:10.1021/acs.orglett.8b02435
日期:2018.8.17
The hydrofluorination of enolizable ynones with AgF in t-BuOH/DMF is reported. The formation of furans as side products can be suppressed using 2,2′-biphenol. The corresponding β-fluoroenones were obtained with good Z-selectivity. A variety of functional groups are tolerated. β-Fluoroenones are vinylogous acid fluorides whose hydrolysis to vinylogous acids can be avoided under the reported reaction
据报道,在叔-BuOH / DMF中用AgF对可烯醇化的炔酮进行氢氟化。使用2,2'-联苯酚可以抑制呋喃作为副产物的形成。以良好的Z-选择性获得了相应的β-氟烯。可以容忍各种功能基团。β-氟烯酮是乙烯基葡糖酸氟化物,在报道的反应条件下可避免水解为乙烯基葡糖酸。用频哪醇硼烷和由嘧啶基恶唑啉配体制备的Ni(0)催化剂可能将β-氟烯酮不对称的1,2-还原为3-氟代烯丙基醇。