Acetic Acid → (2'-Ethylaminomethyl-6-methoxy-4'-trifluoromethyl-biphenyl-3-yl)-acetic acid ethyl ester

HRID 1810285Notes

Reaction equation

HRID 1810285 reaction equation
[CH2:1]([O:3][C:4](=[O:26])[CH2:5][C:6]1[CH:7]=[C:8]([C:14]2[CH:19]=[CH:18][C:17]([C:20]([F:23])([F:22])[F:21])=[CH:16][C:15]=2[CH:24]=O)[C:9]([O:12][CH3:13])=[CH:10][CH:11]=1)[CH3:2].[CH2:27]([NH2:29])[CH3:28].C(O)(=O)C.C([BH3-])#N.[Na+]>CO>[CH2:1]([O:3][C:4](=[O:26])[CH2:5][C:6]1[CH:7]=[C:8]([C:14]2[CH:19]=[CH:18][C:17]([C:20]([F:22])([F:21])[F:23])=[CH:16][C:15]=2[CH2:24][NH:29][CH2:27][CH3:28])[C:9]([O:12][CH3:13])=[CH:10][CH:11]=1)[CH3:2]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 6341EthylamineHCID 5003444Sodium cyanoborohydrideHCID 86633171(2'-Formyl-6-methoxy-4'-trifluoromethyl-biphenyl-3-yl)-acetic acid ethyl ester

Product 1

HCID 66604101(2'-Ethylaminomethyl-6-methoxy-4'-trifluoromethyl-biphenyl-3-yl)-acetic acid ethyl ester

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To (2′-formyl-6-methoxy-4′-trifluoromethyl-biphenyl-3-yl)-acetic acid ethyl ester (1.0 g, 2.73 mmol) in MeOH (8 mL) was added ethylamine (2M in THF; 5 mL, 10 mmol), followed by acetic acid (0.23 mL, 4.09 mmol). Sodium cyanoborohydride (0.260 g, 4.14 mmol) was then added, and the reaction was stirred at room temperature and monitored by analytical LCMS. The reaction never reached completion, so the mixture was concentrated and partitioned between EtOAc and saturated aqueous NaHCO3. The aqueous layer was extracted with EtOAc, and the combined organic layers were dried over MgSO4, filtered, and concentrated. The residue was purified by silica gel chromatography (0-6% MeOH in CH2Cl2) to give the title compound.

Workup

  1. customThe reaction never reached completion
  2. concentrationso the mixture was concentrated
  3. custompartitioned between EtOAc and saturated aqueous NaHCO3
  4. extractionThe aqueous layer was extracted with EtOAc
  5. dry with materialthe combined organic layers were dried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified by silica gel chromatography (0-6% MeOH in CH2Cl2)

Sources & evidence

ORD record
ord-341cc38d78ed46da8d8baab900110731
Source dataset
uspto-grants-2013_01
Patent number
US08362044B2

Reaction notes

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