Ethanol → 2-[[(5S)-2-oxo-3-[4-(3-oxomorpholin-4-yl)phenyl]-1,3-oxazolidin-5-yl]methyl]isoindole-1,3-dione

Participants

Reaction Conditions

Reaction Steps

2641 g of 2-((2R)-2-hydroxy-3-{[4-(3-oxo-4-morpholinyl)phenyl]amino}propyl)-1H-isoindole-1,3(2H)-dione (V) are suspended in 22 l of toluene and, at 19° C., 1300 g of N,N-carbonyl-diimidazole are added. The reaction mixture is subsequently heated under reflux for one hour and then, at 60° C., 4.5 l of ethanol are added. After cooling to 25 to 30° C., the precipitated reaction product is filtered off with suction, washed with ethanol and then dried.

Provenance & Evidence