1-(2-tert-butyl-8-chloro-3-oxo-2,3-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-6-yl)-cyclopentanecarboxylic acid ethyl ester 、
异丙胺 在
silica gel 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以to afford 1-(2-tert-butyl-8-isopropylamino-3-oxo-2,3-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-6-yl)-cyclopentanecarboxylic acid ethyl ester as an oil的产率得到1-(2-tert-butyl-8-isopropylamino-3-oxo-2,3-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-6-yl)-cyclopentanecarboxylic acid ethyl ester