反应详情

To (R)-tert-butyl 3-((1,3-dioxoisoindolin-2-yl)oxy)pyrrolidine-1-carboxylate (2.73 g, 8.21 mmol) prepared following a procedure analogous to Reference Example 7 from (R)-tert-butyl 3-hydroxypyrrolidine-1-carboxylate in methanol (43 mL) was gradually added hydrazine.monohydrate (1.54 g), followed by stirring for 2 hours. The reaction solution was filtered, and the residue resulting from distilling off the filtrate under reduced pressure was subjected to silica gel column chromatography (hexane/ethyl acetate=4/1→0/1) to afford 1.30 g of the title compound (yield 78.3%).

1. filtrationThe reaction solution was filtered
2. customthe residue resulting
3. distillationfrom distilling off the filtrate under reduced pressure