Ammonium Chloride → 4'-[3-[Hydroxyimino]-3-(2-methyl-pyridin-4-yl)-1-o-tolyl-propyl]-biphenyl-4-carboxylic acid methyl ester

HRID 1617507Notes

Reaction equation

HRID 1617507 reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[CH:16]=[CH:15][C:14]([CH:17]([C:28]3[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=3[CH3:34])[CH2:18][C:19]([C:21]3[CH:26]=[CH:25][N:24]=[C:23]([CH3:27])[CH:22]=3)=O)=[CH:13][CH:12]=2)=[CH:7][CH:6]=1)=[O:4].Cl.[NH2:36][OH:37].C(=O)([O-])O.[Na+].[NH4+].[Cl-]>C(O)C.O>[CH3:1][O:2][C:3]([C:5]1[CH:6]=[CH:7][C:8]([C:11]2[CH:12]=[CH:13][C:14]([CH:17]([C:28]3[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=3[CH3:34])[CH2:18][C:19](=[N:36][OH:37])[C:21]3[CH:26]=[CH:25][N:24]=[C:23]([CH3:27])[CH:22]=3)=[CH:15][CH:16]=2)=[CH:9][CH:10]=1)=[O:4]

Participants

7

Reactant 4

HCID 25517Ammonium ChlorideHCID 443297Hydroxyamine hydrochlorideHCID 516892Sodium BicarbonateHCID 666667824'-[3-(2-Methyl-pyridin-4-yl)-3-oxo-1-o-tolyl-propyl]-biphenyl-4-carboxylic acid methyl ester

Product 1

HCID 1363599834'-[3-[Hydroxyimino]-3-(2-methyl-pyridin-4-yl)-1-o-tolyl-propyl]-biphenyl-4-carboxylic acid methyl ester

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

A solution of 4′-[3-(2-methyl-pyridin-4-yl)-3-oxo-1-o-tolyl-propyl]-biphenyl-4-carboxylic acid methyl ester (36 mg), hydroxylamine hydrochloride (11 mg) and sodium hydrogencarbonate (14 mg) in a mixture of ethanol (0.5 mL) and water (0.1 mL) was heated under reflux for 1.5 hours. A saturated solution of NH4Cl was added, the phases were separated and the inorganic one was extracted with EtOAc (2×). The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The crude product was purified by flash chromatography on silica gel (EtOAc/n-heptane 2:1) to yield the title compound as a mixture of E and Z isomers (3.3:1) as a white foam (28 mg, 75%), MS (ESI+): m/z=465.2 ([M+H]+).

Workup

  1. temperaturewas heated
  2. temperatureunder reflux for 1.5 hours
  3. customthe phases were separated
  4. extractionthe inorganic one was extracted with EtOAc (2×)
  5. washThe combined organic layers were washed with brine
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe crude product was purified by flash chromatography on silica gel (EtOAc/n-heptane 2:1)

Sources & evidence

ORD record
ord-8bc1d4edea4148e598b3435d0886c219
Source dataset
uspto-grants-2014_07
Patent number
US08765730B2

Reaction notes

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