tert-butyl 6-(pyridin-4-yl)indoline-1-carboxylate 、
三氟乙酸 以
二氯甲烷 为溶剂,
反应 2.0h,
以to give 6-(pyridin-4-yl)indoline TFA salt 50.0 as a light yellow solid (300 mg, 100% yield)的产率得到tert-butyl 6-(pyridin-4-yl)indoline-1-carboxylate trifluoroacetic acid salt