Sodium Carbonate → 6-[2,2,4,6,7-Pentamethyl-3-(4-methylphenyl)-2,3-dihydro-1-benzofuran-5-yl]-6H-[1,3]dioxolo[4,5-f]-isoindole

HRID 272335

반응식

HRID 272335 반응식
[CH3:1][C:2]1([CH3:22])[CH:6]([C:7]2[CH:12]=[CH:11][C:10]([CH3:13])=[CH:9][CH:8]=2)[C:5]2[C:14]([CH3:21])=[C:15]([NH2:20])[C:16]([CH3:19])=[C:17]([CH3:18])[C:4]=2[O:3]1.[C:23](=[O:26])([O-])[O-:24].[Na+].[Na+]>O1CCCC1.[I-].C([N+](CCCC)(CCCC)CCCC)CCC>[CH3:1][C:2]1([CH3:22])[CH:6]([C:7]2[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][CH:12]=2)[C:5]2[C:14]([CH3:21])=[C:15]([N:20]3[CH:21]=[C:14]4[C:5]([CH:4]=[C:17]5[O:26][CH2:23][O:24][C:16]5=[CH:15]4)=[CH:6]3)[C:16]([CH3:19])=[C:17]([CH3:18])[C:4]=2[O:3]1

참가 물질

5

반응물 2

HCID 10340Sodium CarbonateHCID 106853092,2,4,6,7-Pentamethyl-3-(4-methylphenyl)-2,3-dihydro-1-benzofuran-5-amine

생성물 1

HCID 101816966-[2,2,4,6,7-Pentamethyl-3-(4-methylphenyl)-2,3-dihydro-1-benzofuran-5-yl]-6H-[1,3]dioxolo[4,5-f]-isoindole수율 22.8%

시약·촉매·용매 2

HCID 67553Tetrabutylammonium Iodide촉매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of 2,2,4,6,7-pentamethyl-3-(4-methylphenyl)-2,3-dihydro-1-benzofuran-5-amine (799.8 mg, 2.73 mmol) in tetrahydrofuran (30 ml) were added 5,6-bis(chloromethyl)-1,3-benzodioxazole (603.8 mg, 2.76 mmol), sodium carbonate (877.8 mg, 8.28 mmol), and tetrabutylammonium iodide (506.8 mg, 1.37 mmol) and the mixture was refluxed with heating for 23 hours. The reaction mixture was cooled down to room temperature and then poured into ice water. The product was extracted twice with isopropyl ether. The combined extracts were washed with an aqueous saturated solution of sodium chloride, dried on magnesium sulfate, filtered, and then concentrated under reduced pressure. The residue was subjected to column chromatography on silica gel (hexane-ethyl acetate 10:1) to obtain 136.8 mg (11% yield) of the title compound. Melting point: 236-242° C. (Ethyl acetate)

후처리

  1. temperaturethe mixture was refluxed
  2. temperaturewith heating for 23 hours
  3. extractionThe product was extracted twice with isopropyl ether
  4. washThe combined extracts were washed with an aqueous saturated solution of sodium chloride
  5. customdried on magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure

출처 및 근거

ORD 기록
ord-3423d508111e460c867e9b03356433ab
출처 데이터셋
uspto-grants-2008_11
특허 번호
US07456162B2

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