Sodium Iodide → Isopropyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate
反応式
[C:1]([O:5][C:6]([NH:8][CH:9]([CH2:16]OS(C)(=O)=O)[C:10]([O:12][CH:13]([CH3:15])[CH3:14])=[O:11])=[O:7])([CH3:4])([CH3:3])[CH3:2].[I-:22].[Na+]>CC(C)=O>[C:1]([O:5][C:6]([NH:8][CH:9]([CH2:16][I:22])[C:10]([O:12][CH:13]([CH3:15])[CH3:14])=[O:11])=[O:7])([CH3:4])([CH3:3])[CH3:2]参加物
4
実験手順
To a solution of 2 (392 g) in acetone (3.14 L), sodium iodide (542 g) was added. The reaction temperature went up to 29° C. from 17° C. The reaction mixture was maintained at room temperature over weekend. The mixture was filtrated and washed with MTBE. The filtrate and washings were combined and concentrated. The residue was treated with MTBE and water with a small amount of sodium thiosulfate. The organic layer was washed with water and concentrated to an oil. The oil was charged slowly into a mixture of water (2 L) and DMF (300 ml) with a small amount of seed at 5° C. The crystals were filtered and dried to give 3 (400 g, 93% yield).