反应详情

温度

50 °C

Add ((S)-2-amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-carbamic acid tert-butyl ester (0.10 g, 0.37 mmol) followed by O-(7-aza-benzotriazole-1-yl)-N,N,N′N′-tetramethyluronium hexafluorophosphate (0.13 g, 0.34 mmol) and N,N-diisopropylethyl (0.13 mL, 0.70 mmol) amine to a solution of 3-[(4-cyano-phenylcarbamoyl)-methoxy]-benzoic acid (0.10 g, 0.34 mmol) in N,N-dimethylacetamide (3 mL). Heat the mixture to 50° C. for 2 h then cool to room temperature and dilute with water causing a solid to precipitate from solution. Collect the light yellow solid by filtration, wash with water, and dry on the filter pad to provide 0.14 g of ((S)-2-{3-[(4-cyano-phenylcarbamoyl)-methoxy]-benzoylamino}-4,5,6,7-tetrahydro-benzothiazol-6-yl)-carbamic acid tert-butyl ester.

1. temperaturethen cool to room temperature
2. customto precipitate from solution
3. customCollect the light yellow solid
4. filtrationby filtration
5. washwash with water
6. customdry on the filter pad