反应详情

To ethyl 1-benzyl-6-(2-(1-methyl-1H-imidazole-4-sulfonamido)ethoxy)-2,3-dihydro-1H-inden-2-ylcarbamate (23.8 mg, 0.048 mmol; see example 195) in tetrahydrofuran (1 ml) was added lithium aluminium hydride in tetrahydrofuran (0.143 ml, 0.143 mmol) and the reaction mixture was refluxed for 2 h. Cooled down to room temperature and a 2N sodium hydroxide was slowly added and extracted twice with dichloromethane, washed with sodium bicarbonate and brine, dried, filtered and evaporated to obtain the crude material as white solid, that was purified by flash silica gel chromatography on 4 g SiO2-cartridge using 10% methanol in dichloromethane over 25 min to afford N-(2-(3-benzyl-2-(methylamino)-2,3-dihydro-1H-inden-5-yloxy)ethyl)-1-methyl-1H-imidazole-4-sulfonamide as a clear glass. m=6.4 mg (23%)

1. temperaturethe reaction mixture was refluxed for 2 h
2. extractionextracted twice with dichloromethane
3. washwashed with sodium bicarbonate and brine
4. customdried
5. filtrationfiltered
6. customevaporated
7. customto obtain the crude material as white solid, that
8. customwas purified by flash silica gel chromatography on 4 g SiO2-cartridge
9. customover 25 min