NHC-Cu(I)-Catalyzed Friedländer-Type Annulation of Fluorinated <i>o</i>-Aminophenones with Alkynes on Water: Competitive Base-Catalyzed Dibenzo[<i>b</i>,<i>f</i>][1,5]diazocine Formation
作者:Paweł Czerwiński、Michał Michalak
DOI:10.1021/acs.joc.7b01235
日期:2017.8.4
good yields. Further investigations proved that o-FMKs could be efficiently transformed into a rare class of heterocyclic compounds—dibenzo[b,f][1,5]diazocines—by a base-catalyzed condensation, also on water. The developed method was applied for gram-scale synthesis of a fluorinated analogue of G protein-coupled receptor antagonist (GPR91).
4- trifluoromethylquinolines和naphthydrines(以及它们的二氟和全氟类似物)一种高效,易于扩展的合成作为串联直接催化炔基/脱水缩合的结果Ô -aminofluoromethylketones(ø -FMKs),首次催化报道了NHC-铜(I)在水上的配合物。在反应条件下可耐受各种末端炔烃,包括β-内酰胺,甾体和糖衍生的炔烃,从而可得到所需的喹啉和萘酚,并具有良好的收率。进一步的研究证明,o -FMKs可以有效地转化为稀有的杂环化合物,即二苯并[ b,f] [1,5]重氮电影—通过碱催化的缩合反应,也可以在水上进行。所开发的方法被用于克规模的G蛋白偶联受体拮抗剂(GPR91)的氟化类似物的合成。