4-Methylbenzaldehyde → N-((4-Methylphenyl)methyl)-N-(1-((4-methylphenyl)methyl)piperidin-4-yl)-4-methoxyphenylacetamide

HRID 2414866Notes

Reaction equation

HRID 2414866 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]([CH:21]2[CH2:26][CH2:25][N:24]([C:27](OC(C)(C)C)=O)[CH2:23][CH2:22]2)[C:10](=[O:20])[CH2:11][C:12]2[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=2)=[CH:4][CH:3]=1.[CH3:34][C:35]1[CH:42]=[CH:41][C:38](C=O)=[CH:37][CH:36]=1.[BH4-].C(OC(=O)C)(=O)C>C(O)C>[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]([CH:21]2[CH2:26][CH2:25][N:24]([CH2:27][C:38]3[CH:41]=[CH:42][C:35]([CH3:34])=[CH:36][CH:37]=3)[CH2:23][CH2:22]2)[C:10](=[O:20])[CH2:11][C:12]2[CH:13]=[CH:14][C:15]([O:18][CH3:19])=[CH:16][CH:17]=2)=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 77254-MethylbenzaldehydeHCID 7918Acetic AnhydrideHCID 28123BorohydrideHCID 12146688N-((4-methylphenyl)methyl)-N-(1-(tert-butyloxycarbonyl)piperidin-4-yl)-4-methoxyphenylacetamide

Product 1

HCID 10139214N-((4-Methylphenyl)methyl)-N-(1-((4-methylphenyl)methyl)piperidin-4-yl)-4-methoxyphenylacetamide

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

The product from example 13 above (20 mg, 0.06 mmol) was dissolved in abs. ethanol (2 ml). 4-Methylbenzaldehyde (0.134 ml, 1.1 mmol) was added followed by solid-supported borohydride (150 mg, 2.5 mmol/g resin; Aldrich 32,864-2). The mixture was shaken at room temperature. After 48 h, the resin was filtered off and acetic anhydride (0.02 ml, 0.2 mmol) was added to the organic solution. After 24 h, the mixture was concentrated and redissolved in methanol (2 ml). The solution was added on to a column carrying strongly acidic cation exchange resin (0.3 mmol/g resin), which was washed with methanol (3×6 ml), and eluted with 10% NH3 in methanol, and concentrated to give the title compound. Yield: 22 mg; HRMS (FAB+, NBA) (M+H)+ 457.2853, C30H37N2O2 requires 457.2855; LC-MS: (M+H)+ 457.2, tr 6.97 min.

Workup

  1. filtrationthe resin was filtered off
  2. waitAfter 24 h
  3. concentrationthe mixture was concentrated
  4. dissolutionredissolved in methanol (2 ml)
  5. additionThe solution was added on to a column
  6. washwas washed with methanol (3×6 ml)
  7. washeluted with 10% NH3 in methanol
  8. concentrationconcentrated

Sources & evidence

ORD record
ord-9fb06f4d6d864ed4a2daf4815e252834
Source dataset
uspto-grants-2004_11
Patent number
US06815458B2

Reaction notes

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