反应详情

To a stirred solution of (2S)-2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-4-pentenoic acid (2.82 g, 13 mmol), DMAP (1.9 g, 16 mmol) and EDC (3.1 g, 16 mmol) was added N-methylallylamine (1.38 mL, 14 mmol). The reaction was stirred for 72 hours before being quenched by the addition of 1 M HCl (15 mL). The resulting biphasic mixture was separated and the aqueous phase was extracted once with DCM. The combined organics were dried over sodium sulfate and concentrated to yield 1,1-dimethylethyl {(1S)-1-[(2-propen-1-ylamino)carbonyl]-3-buten-1-yl}carbamate (0.94 g, 28%). LCMS: (M−tBut)+: 238.1.

1. custombefore being quenched by the addition of 1 M HCl (15 mL)
2. customThe resulting biphasic mixture was separated
3. extractionthe aqueous phase was extracted once with DCM
4. dry with materialThe combined organics were dried over sodium sulfate
5. concentrationconcentrated