Triethylamine → N-{4-(methoxymethyl)-1-[2-(4-nitrophenyl)ethyl]-4-piperidinyl}-N-phenylpropanamide

HRID 1973844Notes

Reaction equation

HRID 1973844 reaction equation
Br[CH2:2][CH2:3][C:4]1[CH:9]=[CH:8][C:7]([N+:10]([O-:12])=[O:11])=[CH:6][CH:5]=1.[CH3:13][O:14][CH2:15][C:16]1([N:22]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:23](=[O:26])[CH2:24][CH3:25])[CH2:21][CH2:20][NH:19][CH2:18][CH2:17]1.C(N(CC)CC)C>CN(C)C(=O)C>[CH3:13][O:14][CH2:15][C:16]1([N:22]([C:27]2[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=2)[C:23](=[O:26])[CH2:24][CH3:25])[CH2:21][CH2:20][N:19]([CH2:2][CH2:3][C:4]2[CH:9]=[CH:8][C:7]([N+:10]([O-:12])=[O:11])=[CH:6][CH:5]=2)[CH2:18][CH2:17]1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 792664-Nitrophenethyl bromideHCID 162172Noralfentanil

Product 1

HCID 12782363N-{4-(methoxymethyl)-1-[2-(4-nitrophenyl)ethyl]-4-piperidinyl}-N-phenylpropanamide

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Conditions

Temperature
70 °C

Procedure

A mixture of 20 parts of 1-(2-bromoethyl)-4-nitrobenzene, 21.8 parts of N-[4-(methoxymethyl)-4-piperidinyl]-N-phenylpropanamide, 14.4 parts of N,N-diethylethanamine and 270 parts of N,N-dimethylacetamide is stirred and heated for 4.50 hours at 70° C. The reaction mixture is cooled to room temperature and poured onto water. The product is extracted with methylbenzene. The extract is washed with water, dried, filtered and evaporated. The oily residue is purified by column-chromatography over silica gel using a mixture of trichloromethane and 4% of methanol as eluent. The first fraction is collected and the eluent is evaporated, yielding a first fraction of 14 parts of N-{4-(methoxymethyl)-1-[2-(4-nitrophenyl)ethyl]-4-piperidinyl}-N-phenylpropanamide; mp. 98.7° C The second fraction is collected and the eluent is evaporated. The residue is purified once more by column-chromatography over silica gel using a mixture of trichloromethane and 4% of methanol as eluent. The pure fraction is collected and the eluent is evaporated, yielding a second fraction of 2.8 parts of N-{4-(methoxymethyl)-1-[2-(4-nitrophenyl)ethyl]-4-piperidinyl}-N-phenylpropanamide; mp. 98.7° C.

Workup

  1. temperatureThe reaction mixture is cooled to room temperature
  2. additionpoured onto water
  3. extractionThe product is extracted with methylbenzene
  4. washThe extract is washed with water
  5. customdried
  6. filtrationfiltered
  7. customevaporated
  8. customThe oily residue is purified by column-chromatography over silica gel using
  9. additiona mixture of trichloromethane and 4% of methanol as eluent
  10. customThe first fraction is collected
  11. customthe eluent is evaporated

Sources & evidence

ORD record
ord-18ea5b2f0ead4681b9bd252c450cab16
Source dataset
uspto-grants-1976_12
Patent number
US03998834

Reaction notes

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