反应详情

Meso-2,3-bis(benzylamino)succinic acid (9.5 g, 0.029 mol) was dissolved in a mixture of glacial acetic acid (50 ml) and concentrated hydrochloric acid (50 ml). Hydrogenolysis was effected at ambient temperature with 10% palladium on charcoal (1.0 g) as catalyst. The reaction was run until NMR showed that unreacted starting material was no longer present. Water (100 ml) was added and the catalyst was removed by filtration. The filtrate was concentrated (rotavapor) and the residue was dissolved in dilute aqueous sodium hydroxide. pH was adjusted to approximately 5 upon addition of glacial acetic acid. Crystals were filtered off and washed.

1. customthe catalyst was removed by filtration
2. concentrationThe filtrate was concentrated (rotavapor)
3. dissolutionthe residue was dissolved in dilute aqueous sodium hydroxide
4. additionpH was adjusted to approximately 5 upon addition of glacial acetic acid
5. filtrationCrystals were filtered off
6. washwashed