Potassium Carbonate → 2,2-diphenyl-5-[N-(3,4-methylenedioxyphenethyl)-N-methylamino]pentanamide

HRID 1463853Notes

Reaction equation

HRID 1463853 reaction equation
[C:1]1([C:7]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)([CH2:11][CH2:12][CH2:13][NH:14][CH3:15])[C:8]([NH2:10])=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:22]1[O:33][C:32]2[CH:31]=[CH:30][C:26]([CH2:27][CH2:28]Br)=[CH:25][C:24]=2[O:23]1.C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[C:1]1([C:7]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)([CH2:11][CH2:12][CH2:13][N:14]([CH2:28][CH2:27][C:26]2[CH:30]=[CH:31][C:32]3[O:33][CH2:22][O:23][C:24]=3[CH:25]=2)[CH3:15])[C:8]([NH2:10])=[O:9])[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 122072243,4-Methylenedioxyphenethyl bromideHCID 190884752,2-Diphenyl-5-methylaminopentanamide

Product 1

HCID 543472712,2-diphenyl-5-[N-(3,4-methylenedioxyphenethyl)-N-methylamino]pentanamide

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture containing 2,2-diphenyl-5-methylaminopentanamide (1.0 g--see Preparation 3), 3,4-methylenedioxyphenethyl bromide (0.9 g), anhydrous potassium carbonate (2.0 g) and acetonitrile (20 ml) was heated under reflux for 8 hours. The mixture was partitioned between dichloromethane (30 ml) and 5% sodium carbonate (20 ml), the layers separated and the aqueous layer extracted with dichloromethane (3×20 ml). The combined dichloromethane extracts were dried (MgSO4) and concentrated in vacuo to give an oil which was purified by column chromatography on silica eluting with dichloromethane containing methanol (0% up to 5%). The product-containing fractions were combined and concentrated in vacuo to give the title compound as a foam, yield 0.58 g, m.p. 89°-90°.

Workup

  1. temperaturewas heated
  2. temperatureunder reflux for 8 hours
  3. customThe mixture was partitioned between dichloromethane (30 ml) and 5% sodium carbonate (20 ml)
  4. customthe layers separated
  5. extractionthe aqueous layer extracted with dichloromethane (3×20 ml)
  6. dry with materialThe combined dichloromethane extracts were dried (MgSO4)
  7. concentrationconcentrated in vacuo
  8. customto give an oil which
  9. customwas purified by column chromatography on silica eluting with dichloromethane
  10. additioncontaining methanol (0% up to 5%)
  11. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-d857ef1d15fb4da187b204ba9c0326cb
Source dataset
uspto-grants-1994_04
Patent number
US05302595

Reaction notes

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