Triethylamine → (S)-Glycidoxy-t-butyldimethylsilane

温度

0 °C

To a solution of (R)-glycidol (5 g, 67.5 mmol) in dry dichloromethane containing triethylamine (10.3 ml, 74 mmol) cooled down to 0° C., was added a solution of tert-butyldimethylsilyl chloride (11.2 g, 74 mmol) in dry dichloromethane (30 ml). Then DMAP ( 0.33 g, 2.7 mmol) was added. The mixture was allowed to warm up to room temperature and stirred for 5 hours. The triethylammonium chloride crystals were filtered out and washed with dichloromethane (2×10 ml). The organic solution was washed with brine (2×50 ml) and dried over anhydrous sodium sulfate. The solution was concentrated and passed though a short silica gel column to remove polar impurities, and eluted with hexane/ethyl acetate (3:2). After removing the solvent, a colourless oil was collected and dried in vacuo to provide pure (S)-glycidyl-tert-butyldimethylsilyl ether (10.3 g, 81.2%).

1. temperatureto warm up to room temperature
2. filtrationThe triethylammonium chloride crystals were filtered out
3. washwashed with dichloromethane (2×10 ml)
4. washThe organic solution was washed with brine (2×50 ml)
5. dry with materialdried over anhydrous sodium sulfate
6. concentrationThe solution was concentrated
7. customto remove polar impurities
8. washeluted with hexane/ethyl acetate (3:2)
9. customAfter removing the solvent
10. customa colourless oil was collected
11. customdried in vacuo

ORDレコード

ord-94214aef4c294816994514ae999b42f5

出典データセット

uspto-grants-2002_11

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US06476216B1