Potassium Carbonate → 4-[[6-[3,4-Dimethoxy-5-(1-methylethyl)phenyl)-6-oxohexyl]oxy]-2-hydroxy-3-propylbenzoic acid methyl ester

HRID 1494254노트

반응식

HRID 1494254 반응식
Br[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([C:9]1[CH:14]=[C:13]([CH:15]([CH3:17])[CH3:16])[C:12]([O:18][CH3:19])=[C:11]([O:20][CH3:21])[CH:10]=1)=[O:8].[CH3:22][O:23][C:24](=[O:36])[C:25]1[CH:30]=[CH:29][C:28]([OH:31])=[C:27]([CH2:32][CH2:33][CH3:34])[C:26]=1[OH:35].C(=O)([O-])[O-].[K+].[K+]>CC(C)=O.CN(C=O)C>[CH3:22][O:23][C:24](=[O:36])[C:25]1[CH:30]=[CH:29][C:28]([O:31][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([C:9]2[CH:14]=[C:13]([CH:15]([CH3:17])[CH3:16])[C:12]([O:18][CH3:19])=[C:11]([O:20][CH3:21])[CH:10]=2)=[O:8])=[C:27]([CH2:32][CH2:33][CH3:34])[C:26]=1[OH:35]

참가 물질

6

반응물 3

HCID 11430Potassium CarbonateHCID 13019281Methyl 2,4-dihydroxy-3-propylbenzoateHCID 149864006-Bromo-1-[3,4-dimethoxy-5-(1-methylethyl)phenyl]-1-hexanone

생성물 1

HCID 149864154-[[6-[3,4-Dimethoxy-5-(1-methylethyl)phenyl)-6-oxohexyl]oxy]-2-hydroxy-3-propylbenzoic acid methyl ester수율 98.9%

시약·촉매·용매 2

HCID 180Acetone용매HCID 6228Dimethylformamide용매

실험 절차

A mixture of 6.0 g (0.017 mol) of 6-bromo-1-[3,4-dimethoxy-5-(1-methylethyl)phenyl]-1-hexanone, 3.39 g (0.016 mol) of 2,4-dihydroxy-3-propylbenzoic acid methyl ester and 7.0 g (0.051 mol) of potassium carbonate in 120 mL of acetone and 12 mL of DMF was stirred at reflux for 19 hours. After workup as in Example 16, the crude product was purified by HPLC using 16% ethyl acetate-hexane to give 7.7 g (98% yield) of 4-[[6-[3,4-dimethoxy-5-(1-methylethyl)phenyl)-6-oxohexyl]oxy]-2-hydroxy-3-propylbenzoic acid methyl ester as an oil. The nmr spectrum was consistent with the structure.

후처리

  1. temperatureat reflux for 19 hours
  2. customAfter workup as in Example 16, the crude product was purified by HPLC

출처 및 근거

ORD 기록
ord-3508e699b5c543b0a93b458d4e1bf3c9
출처 데이터셋
uspto-grants-1991_06
특허 번호
US05025036

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