tert-butyl 4-(6-chloro-8-(2-methyl-6-(methylsulfonyl)pyridin-3-ylamino)imidazo[1,2-b]pyridazin-3-yl)piperidine-1-carboxylate 在
palladium-on-charcoal
氢气 作用下,
以
甲醇 为溶剂,
以74%的产率得到tert-butyl 4-(8-(2-methyl-6-(methylsulfonyl)pyridin-3-ylamino)imidazo[1,2-b]pyridazin-3-yl)piperidine-1-carboxylate