反应详情

温度

140 °C

A mixture of (1aRS,7bSR)-5-(2-fluorobenzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa-[c]chromene-4-carboxylic acid (Intermediate 67, 0.15 g), 3-dimethylaminopropylamine (1.26 g) and triethylamine (0.62 g) in NMP (6 mL) was stirred and heated at 140° C. for 48 hours. After cooling, the mixture was concentrated under vacuum and the residue was purified by chromatography on silica, eluting with a mixture of methanol and DCM with a gradient of 5-10%. The resultant product was repurified by preparative TLC, eluting with a mixture of methanol and DCM (10%) to give (1aRS,7bSR)-5-[2-(3-dimethylaminopropylamino)-benzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylic acid (0.08 g) as an off white solid.

1. temperatureAfter cooling
2. concentrationthe mixture was concentrated under vacuum
3. customthe residue was purified by chromatography on silica
4. washeluting with a mixture of methanol and DCM with a gradient of 5-10%
5. customThe resultant product was repurified by preparative TLC
6. washeluting with a mixture of methanol and DCM (10%)