Isodecanol → (2E)-2-Bromo-2-butenedioic acid
반응식
[Br:1][C:2]1[C:3]([O:5][C:6](=[O:8])[CH:7]=1)=[O:4].C([OH:19])CCCCCCC(C)C>C1(C)C=CC=CC=1>[Br:1]/[C:2](=[CH:7]/[C:6]([OH:5])=[O:8])/[C:3]([OH:19])=[O:4]참가 물질
4
실험 절차
Bromomaleic anhydride (19.5 g), isodecanol (69.5 g) p-toluene sulphonic acid (2 g) and toluene (70 ml) were stirred and boiled under reflux below a Dean-Stark trap of volume 15 ml for 2.5 hours. The solution was then cooled with petroleum ether and the petroleum ether solution was washed with water. The solvent and excess isodecanol were distilled under reduced pressure, finally at 100°/0.2 mm of mercury pressure, leaving the bis(isodecyl)ester of bromomaleic acid (56 g) as an oil with an estimated purity by gas chromatography of 96%.
후처리
- temperatureunder reflux below a Dean-Stark trap of volume 15 ml for 2.5 hours
- washthe petroleum ether solution was washed with water
- distillationThe solvent and excess isodecanol were distilled under reduced pressure, finally at 100°/0.2 mm of mercury pressure
출처 및 근거
- ORD 기록
- ord-5893f884ce5b44b6bbe4d8042f3cff83
- 출처 데이터셋
- uspto-grants-1993_10
- 특허 번호
- US05254695
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