6-溴-5- 氟吡啶-2-羧酸甲酯 、
6,8-difluoro-4-methyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)chroman-4-ol 反应 2.0h,
以to give methyl 6-(6,8-difluoro-4-hydroxy-4-methylchroman-7-yl)-5-fluoropicolinate in 100% yield的产率得到methyl 6-(6,8-difluoro-4-hydroxy-4-methylchroman-7-yl)-5-fluoropicolinate