反应详情

A mixture of 1-chloro-3-(4-fluorophenyl)-5-methylhex-5-en-3-ol (3.15 g, 13 mmol), (S)-(−)-1-(-bromophenyl)ethyl isocyanate (3.5 g, 16 mmol), and DBU (8 g, 33 mmol) in THF (80 mL) was heated to reflux for 25 h. The mixture was diluted with EtOAc and washed with 1 N aq HCl. The aqueous phase was extracted with EtOAc (3 x). The combined organic phase was dried over Na2SO4. After the solvents were evaporated, the crude product was purified by column to give (R)-3-(S)-1-(4-bromophenyl)-ethyl)-6-(4-fluorophenyl)-6-(2-methylallyl)-1,3-oxazinan-2-one (2.13 g, yield: 38%).

1. temperaturewas heated
2. temperatureto reflux for 25 h
3. washwashed with 1 N aq HCl
4. extractionThe aqueous phase was extracted with EtOAc (3 x)
5. dry with materialThe combined organic phase was dried over Na2SO4
6. customAfter the solvents were evaporated
7. customthe crude product was purified by column