AbstractHerein, a direct method for the synthesis of 3-fluoroindoles and 3,3-difluoroindolines from easily accessible 2,2-difluoro-2-phenylethan-1-amines is presented. This protocol was performed by Pd-catalyzed direct C–H/N–H coupling and employed picolinamide as a directing group. By controlling the temperature for this transformation, various 3,3-difluoroindolines and 3-fluoroindoles could be isolated with moderate to good yields.
在这里,提出了一种从易获得的2,2-二氟-2-苯基乙基-1-胺直接合成3-氟吲哚和3,3-二氟吲哚的方法。该方案通过Pd催化的直接C-H/N-H偶联进行,采用吡啶甲酰胺作为定向基团。通过控制这种转化的温度,可以得到各种3,3-二氟吲哚和3-氟吲哚,收率从中等到良好不等。