中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2,2-difluoro-2-(2-methoxyphenyl)acetic acid amide | —— | C9H9F2NO2 | 201.173 |
2,2-二氟-2-(2-甲氧基苯基)乙酸乙酯 | ethyl 2,2-difluoro-2-(2-methoxyphenyl)acetate | 1150164-80-9 | C11H12F2O3 | 230.211 |
Herein, 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.