8-(4-chloro-3-hydroxyphenyl)-4-(1-ethylpiperidin-4-yl)-7-(pyridin-4-yl)pyrazolo[5,1-c][1,2,4]triazine-3-carboxylic acid 在
2-chloro-5-[4-(1-ethylpiperidin-4-yl)-7-pyridin-4-ylpyrazolo[5,1-c][1,2,4]triazin-8-yl]phenol 、 crude product 、 silica gel 、
methanol-dichloromethane 作用下,
以
二苯醚-联苯共晶 为溶剂,
反应 0.05h,
以to yield 97 mg (86% for 2 steps) of 2-chloro-5-[4-(1-ethylpiperidin-4-yl)-7-pyridin-4-ylpyrazolo[5,1-c][1,2,4]triazin-8-yl]phenol as a yellow solid的产率得到2-chloro-5-[4-(1-ethylpiperidin-4-yl)-7-pyridin-4-ylpyrazolo[5,1-c][1,2,4]triazin-8-yl]phenol