反应详情

温度

20 °C

To a solution of ((4-chloro-benzyl)-{1-[2-(3,5-dimethyl-phenyl)-acetyl]-2-methyl-azetidine-2-carbonyl}-amino)-acetic acid methyl ester, compound 48 (1 eq.) in either EtOH or MeOH was added aqueous NaOH (2N) (2 eq.). The reaction was stirred at 20° C. for 2 h. The solvent was removed under reduced pressure and the crude was partitioned between water and EtOAc. The organic layer was discarded and the aqueous layer was acidified by addition of aqueous HCl (2N) and thoroughly extracted with EtOAc. The organic layers were combined, dried over MgSO4, filtered and concentrated to afford ((4-chloro-benzyl)-{1-[2-(3,5-dimethyl-phenyl)-acetyl]-2-methyl-azetidine-2-carbonyl}-amino)-acetic acid.

1. customThe solvent was removed under reduced pressure
2. customthe crude was partitioned between water and EtOAc
3. additionthe aqueous layer was acidified by addition of aqueous HCl (2N)
4. extractionthoroughly extracted with EtOAc
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated