Hexane → HCID 54390831, 화합물

온도

-78 °C

To a stirred solution of 4-(2-propyl)-oxazolidine-2-one in anhydrous tetrahydrofuran (250 ml) under a nitrogen atmosphere at -78° C. was added in a dropwise fashion a solution of n-butyllithium in hexane (50 ml, 77.4 mmol) over 5 to 10 min. After stirring an additional 20 min at -78° C., 4-methylpentanoyl chloride (85.2 mmol) was added neat. The reaction was warmed to room temperature and stirred 1 to 2 h at the temperature. The reaction was quenched by adding 100 ml of saturated aqueous ammonium chloride and the volatiles were removed by rotary evaporation. The resulting aqueous residue was extracted three times with ether and the combined organic phases were washed with brine, dried (Na2SO4), filtered and concentrated in vacuo. Recrystallization from hexanes/ethyl acetate provided the desired compound.

1. temperatureThe reaction was warmed to room temperature
2. stirringstirred 1 to 2 h at the temperature
3. customThe reaction was quenched
4. additionby adding 100 ml of saturated aqueous ammonium chloride
5. customthe volatiles were removed by rotary evaporation
6. extractionThe resulting aqueous residue was extracted three times with ether
7. washthe combined organic phases were washed with brine
8. dry with materialdried (Na2SO4)
9. filtrationfiltered
10. concentrationconcentrated in vacuo
11. customRecrystallization from hexanes/ethyl acetate

ORD 기록

ord-792c01d2e9904368888086ef73b63385

출처 데이터셋

uspto-grants-1997_09

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US05670675