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Nitroethane → HCID 178435547, 화합물

HRID 1036468
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HRID 1036468 반응식
Br[C:2]1[CH:11]=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[C:7]([O:12][C@H:13]3[CH2:18][CH2:17][C@H:16]([C:19]([CH3:22])([CH3:21])[CH3:20])[CH2:15][CH2:14]3)[CH:8]=2)[CH:3]=1.C(P(C(C)(C)C)C1C=CC=CC=1C1C=CC=CC=1C)(C)(C)C.C(=O)([O-])[O-].[Cs+].[Cs+].COCCOC.[N+:57]([CH2:60][CH3:61])([O-:59])=[O:58]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd]>[C:19]([C@H:16]1[CH2:15][CH2:14][C@H:13]([O:12][C:7]2[CH:6]=[CH:5][C:4]3[C:9](=[CH:10][CH:11]=[C:2]([CH:60]([N+:57]([O-:59])=[O:58])[CH3:61])[CH:3]=3)[CH:8]=2)[CH2:18][CH2:17]1)([CH3:22])([CH3:21])[CH3:20]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

7

반응물 5

HCID 6587NitroethaneHCID 80711,2-DimethoxyethaneHCID 10796Cesium carbonateHCID 27349372-(Di-tert-butylphosphino)-2'-methyl-1,1'-biphenylHCID 178445718HCID 178445718, 화합물

생성물 1

HCID 178435547HCID 178435547, 화합물수율 58%

시약·촉매·용매

1
HCID 6505921(1E,4E)-1,5-diphenylpenta-1,4-dien-3-one; palladium촉매

실험 절차

A 40 mL vial equipped with a magnetic stir bar was charged with 2-bromo-6-(trans-4-tert-butylcyclohexyloxy)naphthalene (0.6695 g, 1.853 mmol), tris(dibenzylideneacetone)dipalladium(O) (0.06363 g, 0.06948 mmol), 2-(di-t-butylphosphino)-2′-methylbiphenyl (0.08684 g, 0.2779 mmol), and cesium carbonate (0.7245 g, 2.224 mmol). The reaction vessel was capped, evacuated, and backfilled with argon three times then 1,2-dimethoxyethane (20.00 mL, 192.4 mmol) was added via syringe under argon. After the mixture was stirred vigorously for 2 min at room temperature, nitroethane (0.2795 mL, 3.891 mmol) was added and the reaction was heated overnight at 50° C. The reaction was allowed to cool to ambient temperature. The mixture was quenched with a solution of sat. aqueous ammonium chloride. The layers were separated and the aqueous phase was extracted with ethyl acetate. The combined organic phase was washed with water then dried with magnesium sulfate, filtered and concentrated under reduced pressure. The residue was taken up in methylene chloride and silica gel was added. The solvent was removed and the residue was purified by flash column chromatography using 0-20% ethylacetate in hexanes to give the title compound in 58% yield.

후처리

  1. customA 40 mL vial equipped with a magnetic stir bar
  2. customThe reaction vessel was capped
  3. customevacuated
  4. temperaturethe reaction was heated overnight at 50° C
  5. temperatureto cool to ambient temperature
  6. customThe mixture was quenched with a solution of sat. aqueous ammonium chloride
  7. customThe layers were separated
  8. extractionthe aqueous phase was extracted with ethyl acetate
  9. washThe combined organic phase was washed with water
  10. dry with materialthen dried with magnesium sulfate
  11. filtrationfiltered
  12. concentrationconcentrated under reduced pressure
  13. additionsilica gel was added
  14. customThe solvent was removed
  15. customthe residue was purified by flash column chromatography

출처 및 근거

ORD 기록
ord-bc9a7a3504f04bb09c9e77ff0698af4e
출처 데이터셋
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08546359B2

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