nucleophilic substitution of (oligo)fluoropyridines with the appropriate amines and the subsequent catalytic hydrodefluorination paves the way to hitherto inaccessible aminopyridine derivatives, which are of interest as new ligands. Up to four fluorine atoms can be removed regioselectively in one step in a reaction employing an inexpensive titanium precatalyst.
氟使之成为可能!用适当的胺对(低聚)
氟吡啶进行区域选择性亲核取代,然后进行催化加氢脱
氟,为迄今难以获得的
氨基
吡啶衍生物铺平了道路,后者是新的
配体。在使用廉价的
钛预催化剂的反应中,一个步骤中最多可以选择性地除去四个
氟原子。