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Isopropanol → octahydro-7a-methyl-1-[1-methyl-4-(2, 2,4-trimethyl-1,3-dioxolan-4-yl)-2-butenyl]-4H-inden-4-one

HRID 579814
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HRID 579814 반응식
[CH3:1][C:2]12[CH:10]([CH:11]([CH3:23])[CH:12]=[CH:13][CH2:14][C:15]3([CH3:22])[CH2:19][O:18][C:17]([CH3:21])([CH3:20])[O:16]3)[CH2:9][CH2:8][CH:7]1[CH:6]([OH:24])[CH2:5][CH2:4][CH2:3]2.C([O-])(=O)C.[Na+].[Cr](Cl)([O-])(=O)=O.[NH+]1C=CC=CC=1C1C=CC=C[NH+]=1.[Cr](Cl)([O-])(=O)=O.C(O)(C)C>C(Cl)Cl.O>[CH3:1][C:2]12[CH:10]([CH:11]([CH3:23])[CH:12]=[CH:13][CH2:14][C:15]3([CH3:22])[CH2:19][O:18][C:17]([CH3:21])([CH3:20])[O:16]3)[CH2:9][CH2:8][CH:7]1[C:6](=[O:24])[CH2:5][CH2:4][CH2:3]2
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참가 물질

7

반응물 4

HCID 3776IsopropanolHCID 517045Sodium AcetateHCID 76443847octahydro-7a-methyl-1-[1-methyl-4-(2,2,4-trimethyl-1,3-dioxolan-4-yl)-2-butenyl]-4H-inden-4-olHCID 178526115HCID 178526115, 화합물2회

생성물 1

HCID 76443494octahydro-7a-methyl-1-[1-methyl-4-(2, 2,4-trimethyl-1,3-dioxolan-4-yl)-2-butenyl]-4H-inden-4-one

시약·촉매·용매 2

HCID 962Water용매HCID 6344Dichloromethane용매

실험 절차

A solution of 0.145 g of [1R-(1R*,2E,S*),1β,3aα,7aβ]-octahydro-7a-methyl-1-[1-methyl-4-(2,2,4-trimethyl-1,3-dioxolan-4-yl)-2-butenyl]-4H-inden-4-ol in 9 ml of dry methylene chloride was treated with 0.250 g of anhydrous sodium acetate and 0.500 g of 2,2'-bipyridinium chlorochromate and the mixture stirred at room temperature for two hours. After this time, an additional 0.250 g of 2,2'-bipyridinium chlorochromate was added and the stirring continued for two more hours. After this time, 0.5 ml of isopropyl alcohol was added and the mixture stirred for 15 minutes, then diluted with water, and extracted with 3×50 ml of ether. The combined organic phases were washed with water, dried and evaporated to dryness. The residue obtained was purified by chromatography on silica gel, eluting with hexane-ethyl acetate (3:1) to give 0.134 g (93%) of pure [1R-(1R*,2E,S*),1β,3 aα,7aβ]-octahydro-7a-methyl-1-[1-methyl-4-(2,2,4-trimethyl-1,3-dioxolan-4-yl)-2-butenyl]-4H-inden-4-one, [α]D25 (c 0.2, ethanol).

후처리

  1. stirringthe mixture stirred for 15 minutes
  2. extractionextracted with 3×50 ml of ether
  3. washThe combined organic phases were washed with water
  4. customdried
  5. customevaporated to dryness
  6. customThe residue obtained
  7. customwas purified by chromatography on silica gel
  8. washeluting with hexane-ethyl acetate (3:1)

출처 및 근거

ORD 기록
ord-eae6f8f571674403bf061aa449fdf784
출처 데이터셋
uspto-grants-1988_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04749710

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