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

HRID 130764Notes

Reaction equation

HRID 130764 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-fcc37add28a04a229f6f0c685e19b361
Source dataset
uspto-grants-2008_06
Patent number
US07381719B2

Reaction notes

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