Triethylamine → (+/-)-6-[4-(2-Phenyl-piperidin-ylmethyl)-phenoxy]-nicotinamide

HRID 228222Notes

Reaction equation

HRID 228222 reaction equation
[CH:1]([C:3]1[CH:18]=[CH:17][C:6]([O:7][C:8]2[CH:16]=[CH:15][C:11]([C:12]([NH2:14])=[O:13])=[CH:10][N:9]=2)=[CH:5][CH:4]=1)=O.Cl.[C:20]1([CH:26]2[CH2:31][CH2:30][CH2:29][CH2:28][NH:27]2)[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.C(N(CC)CC)C.[BH4-].[Na+]>CO>[C:20]1([CH:26]2[CH2:31][CH2:30][CH2:29][CH2:28][N:27]2[CH2:1][C:3]2[CH:18]=[CH:17][C:6]([O:7][C:8]3[CH:16]=[CH:15][C:11]([C:12]([NH2:14])=[O:13])=[CH:10][N:9]=3)=[CH:5][CH:4]=2)[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 4311764Sodium borohydrideHCID 178142742-phenylpiperidineHCID 568514226-(4-Formylphenoxy)pyridine-3-carboxamide2×

Product 1

HCID 59730347(+/-)-6-[4-(2-Phenyl-piperidin-ylmethyl)-phenoxy]-nicotinamideYield 2%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Combine 6-(4-formyl-phenoxy)-nicotinamide (compound of example 332, step 1) (0.152 g, 0.628 mmol), 2-phenyl-piperidine hydrochloride salt (0.122 g, 0.620 mmol), triethylamine (0.178 mL, 1.28 mmol) in methanol (6.0 mL) and stir. After 21 hours, add sodium borohydride (0.108 g, 2.85 mmol). After about 24 hours, concentrate and purify the residue by silica gel chromatography (25:1→4:1 methylene chloride:methanol) then reverse-phase HPLC to provide 0.0047 g (2%) of the title compound as a white solid: mass spectrum (electrospray): m/z=388.2 (M+1); 1H NMR (methanol-d4): 8.66 (d, 1H, J=2.4 Hz), 8.29 (dd, 1H, J=2.4, 8.3 Hz), 7.52 (d, 2H, J=7.3 Hz), 7.41 (t, 2H, J=7.3 Hz), 7.37-7.28 (m, 3H), 7.11 (d, 2H, J=8.3 Hz), 7.02 (d, 1H, J=8.8 Hz), 3.81 (d, 1H, J=10.7 Hz), 3.39 (s, 2H), 3.20-2.94 (m, 2H), 2.17 (s br, 1H), 1.93-1.61 (m, 4H), 1.59-1.44 (m, 1H).

Workup

  1. waitAfter about 24 hours
  2. concentrationconcentrate
  3. custompurify the residue by silica gel chromatography (25:1→4:1 methylene chloride:methanol)

Sources & evidence

ORD record
ord-aea77498d1e94458a2cb4549bf3bcad0
Source dataset
uspto-grants-2009_07
Patent number
US07560463B2

Reaction notes

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