1-Bromo-4-iodobenzene → 8-(4-Bromophenyl)-1,4-dioxa-8-azaspiro[4.5]decane

HRID 41700

반응식

HRID 41700 반응식
[Br:1][C:2]1[CH:7]=[CH:6][C:5](I)=[CH:4][CH:3]=1.[O:9]1[C:13]2([CH2:18][CH2:17][NH:16][CH2:15][CH2:14]2)[O:12][CH2:11][CH2:10]1.C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1.CC(C)([O-])C.[Na+]>C1(C)C=CC=CC=1.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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C(OCC)(=O)C>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([N:16]2[CH2:17][CH2:18][C:13]3([O:12][CH2:11][CH2:10][O:9]3)[CH2:14][CH2:15]2)=[CH:4][CH:3]=1

참가 물질

8

반응물 4

HCID 115221-Bromo-4-iodobenzeneHCID 674351,4-Dioxa-8-azaspiro(4.5)decaneHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 23676156Sodium t-butoxide

생성물 1

HCID 121693418-(4-Bromophenyl)-1,4-dioxa-8-azaspiro[4.5]decane수율 58.8%

시약·촉매·용매 3

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 1140Toluene용매HCID 8857Ethyl Acetate용매

실험 절차

0.5 g of 1-bromo-4-iodobenzene and 0.3 g of 1,4-dioxa-8-azaspiro[4.5]decane are placed in 10 ml of toluene and then 0.08 g of tris(dibenzylideneacetone)dipalladium(0), 0.061 g of 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene and 0.255 g of sodium tert-butoxide are added. The reaction medium is brought to reflux of the solvent for 4 h. Ethyl acetate is subsequently added and the mixture is washed twice with water and once with a saturated aqueous sodium chloride solution. The organic phase is dried over magnesium sulphate and concentrated under reduced pressure. The crude product obtained is chromatographed on silica gel, elution being carried out with a heptane/ethyl acetate (4/1) solvent mixture. 0.31 g of 8-(4-bromophenyl)-1,4-dioxa-8-azaspiro[4.5]decane is obtained.

후처리

  1. temperatureto reflux of the solvent for 4 h
  2. washthe mixture is washed twice with water and once with a saturated aqueous sodium chloride solution
  3. dry with materialThe organic phase is dried over magnesium sulphate
  4. concentrationconcentrated under reduced pressure
  5. customThe crude product obtained
  6. customis chromatographed on silica gel, elution

출처 및 근거

ORD 기록
ord-bfdb6ef5a9a9453989e933069f5009fe
출처 데이터셋
uspto-grants-2013_09
특허 번호
US08530657B2

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