Benzene, 1-bromo-3-(trifluoromethyl)- → 2,2-Dimethyl-4-(3-trifluoromethylphenyl)-2H-chromene-7-ol

HRID 26289

반응식

HRID 26289 반응식
Br[C:2]1[CH:3]=[C:4]([C:8]([F:11])([F:10])[F:9])[CH:5]=[CH:6][CH:7]=1.[Mg].[CH3:13][C:14]1([CH3:26])[CH2:23][C:22](=O)[C:21]2[C:16](=[CH:17][C:18]([OH:25])=[CH:19][CH:20]=2)[O:15]1.[Cl-].[NH4+]>CCOCC>[CH3:13][C:14]1([CH3:26])[CH:23]=[C:22]([C:2]2[CH:7]=[CH:6][CH:5]=[C:4]([C:8]([F:11])([F:10])[F:9])[CH:3]=2)[C:21]2[C:16](=[CH:17][C:18]([OH:25])=[CH:19][CH:20]=2)[O:15]1

참가 물질

6

반응물 4

HCID 9817Benzene, 1-bromo-3-(trifluoromethyl)-HCID 25517Ammonium ChlorideHCID 6009027-hydroxy-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-oneHCID 5462224Magnesium

생성물 1

HCID 120717572,2-Dimethyl-4-(3-trifluoromethylphenyl)-2H-chromene-7-ol수율 86.2%

시약·촉매·용매 1

HCID 3283Diethyl Ether용매3회

실험 절차

3-Bromobenzotrifluoride (61 g) in dry ether (100 ml was added to magnesium (6.6 g) in ether (50 ml). 2,2-Dimethylchroman-4-one-7-ol (17.4 g) suspended in ether (500 ml) was added and the mixture refluxed for 16 hourss. The reaction mixture was poured into ammonium chloride solution and extracted with ether. The combined ether layers were washed with 2 N HCl (2×100 ml) and dried (MgSO4). Removal of the solvent under reduced pressure gave the title compound (25 g), m.p. 102°-106° C.

후처리

  1. additionwas added
  2. temperaturethe mixture refluxed for 16 hourss
  3. extractionextracted with ether
  4. washThe combined ether layers were washed with 2 N HCl (2×100 ml)
  5. dry with materialdried (MgSO4)
  6. customRemoval of the solvent under reduced pressure

출처 및 근거

ORD 기록
ord-58a9c8d907364fbda18f7e7cdb4bebbe
출처 데이터셋
uspto-grants-1979_04
특허 번호
US04148909

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