Sodium Hydroxide → 2-[1-[2-Butoxy-3'-(1-methyl-3-pentylureido)biphenyl-4-yl]meth-(e)-ylidene]butyric acid

HRID 390666Notes

Reaction equation

HRID 390666 reaction equation
[OH-].[Na+].[CH2:3]([O:7][C:8]1[CH:13]=[C:12](/[CH:14]=[C:15](\[CH2:21][CH3:22])/[C:16]([O:18]CC)=[O:17])[CH:11]=[CH:10][C:9]=1[C:23]1[CH:28]=[CH:27][CH:26]=[C:25]([N:29]([CH3:38])[C:30]([NH:32][CH2:33][CH2:34][CH2:35][CH2:36][CH3:37])=[O:31])[CH:24]=1)[CH2:4][CH2:5][CH3:6]>C(O)C.O1CCCC1>[CH2:3]([O:7][C:8]1[CH:13]=[C:12](/[CH:14]=[C:15](\[CH2:21][CH3:22])/[C:16]([OH:18])=[O:17])[CH:11]=[CH:10][C:9]=1[C:23]1[CH:28]=[CH:27][CH:26]=[C:25]([N:29]([CH3:38])[C:30]([NH:32][CH2:33][CH2:34][CH2:35][CH2:36][CH3:37])=[O:31])[CH:24]=1)[CH2:4][CH2:5][CH3:6]

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 68964170Ethyl 2-[1-[2-butoxy-3'-(1-methyl-3-pentylureido)biphenyl-4-yl]meth-(e)-ylidene]butyrate

Product 1

HCID 162250092-[1-[2-Butoxy-3'-(1-methyl-3-pentylureido)biphenyl-4-yl]meth-(e)-ylidene]butyric acidYield 83%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
50 °C

Procedure

40 mg (1 mmol) of sodium hydroxide are added to a solution of 483 mg (1 mmol) of ethyl 2-[1-[2-butoxy-3′-(1-methyl-3-pentylureido)biphenyl-4-yl]meth-(E)-ylidene]butyrate in 1 mL of ethanol and 10 mL of tetrahydrofuran. The reaction mixture is heated at 50° C. for 48 hours. The reaction medium is evaporated to dryness, taken up in water and acidified with aqueous 2 N hydrochloric acid solution and extracted with ethyl acetate. The organic phases are combined, washed with water and dried over magnesium sulfate. After filtration, the solvent is evaporated off and the oil obtained is purified by chromatography on a column of silica eluted with a 60/40 heptane/ethyl acetate mixture and then precipitated from heptane. 310 mg (83%) of 2-[1-[2-butoxy-3′-(1-methyl-3-pentylureido)biphenyl-4-yl]meth-(E)-ylidene]butyric acid are obtained in the form of a white powder with a melting point of 98-100° C.

Workup

  1. customThe reaction medium is evaporated to dryness
  2. extractionextracted with ethyl acetate
  3. washwashed with water
  4. dry with materialdried over magnesium sulfate
  5. filtrationAfter filtration
  6. customthe solvent is evaporated off
  7. customthe oil obtained
  8. customis purified by chromatography on a column of silica
  9. washeluted with a 60/40 heptane/ethyl acetate mixture
  10. customprecipitated from heptane

Sources & evidence

ORD record
ord-d66dab7b7b874a098af6e348cc665f74
Source dataset
uspto-grants-2013_02
Patent number
US08383652B2

Reaction notes

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