benzyl (3R,4S)-3-{[7-(2,4-dichlorophenyl)-2,6-dimethylpyrrolo[1,2-b]pyridazin-4-yl]amino}-4-hydroxypyrrolidine-1-carboxylate 、
碘乙烷 在
sodium hydride 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 16.5h,
以74%的产率得到benzyl (3R,4S)-3-{[7-(2,4-dichlorophenyl)-2,6-dimethylpyrrolo[1,2-b]pyridazin-4-yl]amino}-4-ethoxypyrrolidine-1-carboxylate