反应详情

In methylene chloride (150 ml) was dissolved 1,4-bis(tert-butoxycarbonyl)-2-(2-hydroxyethyl)piperazine. Under ice cooling, N-methylmorpholine (2.14 g) and tetra-n-propylammonium perruthenate (0.97 g) were added to the reaction mixture, followed by stirring at room temperature for 17 hours. The reaction mixture was then distilled off under reduced pressure. The residue was subjected to chromatography on a silica gel column (hexane:ethyl acetate=9:1 to 2:1), whereby the title compound (3.11 g) was obtained as colorless powder.

1. distillationThe reaction mixture was then distilled off under reduced pressure
2. customwas obtained as colorless powder