The sequential Sonogashira reaction and the cyclization reaction of various 2-iodoanilines and terminal alkynes in the presence of a palladium catalyst and tetrabutylammonium fluoride (TBAF) gave the corresponding 2-substituted indoles in good yields.
在
钯催化剂和
四丁基氟化铵(TBAF)存在下,各种
2-碘苯胺与末端
炔烃依次进行Sonogashira反应和环化反应,以良好产率得到了相应的2-取代
吲哚。