4-[4-(1,1-dioxo-1H-1λ6-benzo[b]thiophen-5-yloxy)-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester 在
钯 氢气 、 ethyl acetate hexanes 作用下,
以
乙酸乙酯 为溶剂,
反应 3.0h,
以to give 4-[4-(1,1-dioxo-2,3-dihydro-1H-1λ6-benzo[b]thiophen-5-yloxy)-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester (497 mg, 93%) as a white solid的产率得到4-[4-(1,1-dioxo-2,3-dihydro-1H-1λ
6-benzo[b]thiophen-5-yloxy)-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester