Potassium Carbonate → HCID 14986412, compound

HRID 1613079Notes

Reaction equation

HRID 1613079 reaction equation
Br[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([C:9]1[CH:14]=[C:13]([CH3:15])[C:12]([O:16][CH3:17])=[C:11]([O:18][CH3:19])[C:10]=1[CH3:20])=[O:8].[CH3:21][O:22][C:23](=[O:35])[C:24]1[CH:29]=[CH:28][C:27]([OH:30])=[C:26]([CH2:31][CH2:32][CH3:33])[C:25]=1[OH:34].C(=O)([O-])[O-].[K+].[K+]>CC(C)=O.CN(C=O)C>[CH3:21][O:22][C:23](=[O:35])[C:24]1[CH:29]=[CH:28][C:27]([O:30][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([C:9]2[CH:14]=[C:13]([CH3:15])[C:12]([O:16][CH3:17])=[C:11]([O:18][CH3:19])[C:10]=2[CH3:20])=[O:8])=[C:26]([CH2:31][CH2:32][CH3:33])[C:25]=1[OH:34]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 13019281Methyl 2,4-dihydroxy-3-propylbenzoateHCID 14986401HCID 14986401, compound

Product 1

HCID 14986412HCID 14986412, compoundYield 98.7%

Reagents, catalysts & solvents 2

HCID 180AcetoneSolventHCID 6228DimethylformamideSolvent

Procedure

A mixture of 2.50 g (7.29 mmol) of 6-bromo-1-(3,4-dimethoxy-2,5-dimethylphenyl)-1-hexanone, 1.53 g (7.29 mmol) of 2,4-dihydroxy-3-propylbenzoic acid methyl ester and 3.30 g (24 mmol) of potassium carbonate in 50 mL of acetone and 5 mL of DMF was stirred and heated at reflux for 26 hours. After workup as in Example 16 the crude product was purified by HPLC using 10% ethyl acetate-hexane to give 3.40 g (98% yield) of 4-[[6-(3,4-dimethoxy-2,5-dimethylphenyl)-6-oxohexyl]oxy]-2-hydroxy-3-propyl benzoic acid methyl ester as an oil. The nmr spectrum was consistent with the structure.

Workup

  1. temperatureheated
  2. temperatureat reflux for 26 hours
  3. customAfter workup as in Example 16 the crude product was purified by HPLC

Sources & evidence

ORD record
ord-726695e2b5894cb1b537c4461849f49c
Source dataset
uspto-grants-1993_03
Patent number
US05191108

Reaction notes

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