3-Haloquinolines by Friedländer Reaction of α-Haloketones
作者:Sergey V. Ryabukhin、Vasiliy S. Naumchik、Andrey S. Plaskon、Oleksandr O. Grygorenko、Andrey A. Tolmachev
DOI:10.1021/jo2008252
日期:2011.7.15
A general approach to 3-fluoro-, 3-chloro-, and 3-bromoquinolines which relies on organosilane-promoted Friedländer reaction of α-haloketones is described. The scope of the methylene component as well as influence of the organosilane component on the outcome of the reaction is studied. The method can be used under parallel synthesis conditions.
A tandem oxidative radical halogenated addition of alkynyl imines for regioselective synthesis of 3‐haloquinolines was described. In this process, it is believed that the oxidation of halogen, 6‐endo‐trig cyclization and aromatization were involved in the process. With the advantages of simple operation, mild conditions and useful products, this protocol should be of great significance not only for