Cyclopropanecarboxaldehyde → N-(4-{trans-2-[(cyclopropylmethyl)amino]cyclopropyl}phenyl)-3-(trifluoromethyl)benzamide hydrochloride

HRID 922531Notes

Reaction equation

HRID 922531 reaction equation
[ClH:1].[NH2:2][C@@H:3]1[CH2:5][C@H:4]1[C:6]1[CH:11]=[CH:10][C:9]([NH:12][C:13](=[O:24])[C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([C:20]([F:23])([F:22])[F:21])[CH:15]=2)=[CH:8][CH:7]=1.[CH:25]1([CH:28]=O)[CH2:27][CH2:26]1.C(=O)([O-])O.[Na+].[BH4-].[Na+]>CO.C1COCC1>[ClH:1].[CH:25]1([CH2:28][NH:2][C@@H:3]2[CH2:5][C@H:4]2[C:6]2[CH:7]=[CH:8][C:9]([NH:12][C:13](=[O:24])[C:14]3[CH:19]=[CH:18][CH:17]=[C:16]([C:20]([F:22])([F:23])[F:21])[CH:15]=3)=[CH:10][CH:11]=2)[CH2:27][CH2:26]1

Participants

7

Reactant 4

HCID 123114CyclopropanecarboxaldehydeHCID 516892Sodium Bicarbonate2×HCID 4311764Sodium borohydrideHCID 86729839N-[4-(trans-2-aminocyclopropyl)phenyl]-3-(trifluoromethyl)benzamide hydrochloride

Product 1

HCID 86729885N-(4-{trans-2-[(cyclopropylmethyl)amino]cyclopropyl}phenyl)-3-(trifluoromethyl)benzamide hydrochlorideYield 45.7%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of N-[4-(trans-2-aminocyclopropyl)phenyl]-3-(trifluoromethyl)benzamide hydrochloride (150 mg) in methanol (10 mL)/THF (10 mL) were added cyclopropanecarbaldehyde (38.3 mg) and sodium hydrogen carbonate (70.6 mg). The mixture was stirred at 60° C. for 1 hr, and ice-cooled to 0° C. and sodium borohydride (31.8 mg) was added. The mixture was stirred at room temperature for 2 hr, and ice-cooled to 0° C., and aqueous sodium hydrogen carbonate solution was added. The mixture was extracted with ethyl acetate, and the extract was washed with water and saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/methanol). To the obtained product was added 10% hydrochloric acid methanol solution, and the solvent was evaporated under reduced pressure. The residue was recrystallized from methanol/diisopropyl ether to give the title compound (79 mg).

Workup

  1. temperatureice-cooled to 0° C.
  2. stirringThe mixture was stirred at room temperature for 2 hr
  3. temperatureice-cooled to 0° C.
  4. extractionThe mixture was extracted with ethyl acetate
  5. washthe extract was washed with water and saturated brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. customThe solvent was evaporated under reduced pressure
  8. customThe residue was purified by silica gel column chromatography (ethyl acetate/methanol)
  9. additionTo the obtained product was added 10% hydrochloric acid methanol solution
  10. customthe solvent was evaporated under reduced pressure
  11. customThe residue was recrystallized from methanol/diisopropyl ether

Sources & evidence

ORD record
ord-e18f1da3c55242e4bdc2af0404942de4
Source dataset
uspto-grants-2016_03
Patent number
US09278931B2

Reaction notes

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