1-Aminopiperidine → 1-(4-chlorophenyl)-2-(2,4-dichlorophenyl)-5-methylsulfanyl-N-(piperidin-1-yl)-1H-imidazole-4-carboxamide

HRID 2112992Notes

Reaction equation

HRID 2112992 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]([S:13][CH3:14])=[C:11]([C:15]([OH:17])=O)[N:10]=[C:9]2[C:18]2[CH:23]=[CH:22][C:21]([Cl:24])=[CH:20][C:19]=2[Cl:25])=[CH:4][CH:3]=1.C(N(CC)C(C)C)(C)C.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)[C:46]2[CH:47]=[CH:48][CH:49]=C[C:45]=2[N:44]=[N:43]1.NN1CCCCC1>CC#N.O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]([S:13][CH3:14])=[C:11]([C:15]([NH:43][N:44]3[CH2:49][CH2:48][CH2:47][CH2:46][CH2:45]3)=[O:17])[N:10]=[C:9]2[C:18]2[CH:23]=[CH:22][C:21]([Cl:24])=[CH:20][C:19]=2[Cl:25])=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 166581-AminopiperidineHCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 219489881-(4-chlorophenyl)-2-(2,4-dichlorophenyl)-5-methylsulfanyl-1H-imidazole-4-carboxylic acid

Product 1

HCID 219490291-(4-chlorophenyl)-2-(2,4-dichlorophenyl)-5-methylsulfanyl-N-(piperidin-1-yl)-1H-imidazole-4-carboxamideYield 72%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Procedure

To a magnetically stirred suspension of 1-(4-chlorophenyl)-2-(2,4-dichlorophenyl)-5-methylsulfanyl-1H-imidazole-4-carboxylic acid (1.72 g, 4.16 mmol) in anhydrous CH3CN (45 ml) was successively added N,N-diisopropylethylamine (Hunig's base) (1.60 ml, 9.20 mmol), O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium hexafluorophosphate (HBTU) (1.89 g, 4.99 mmol) and 1-aminopiperidine (0.54 ml, 5.01 mmol). After stirring for 40 h, water was added and the resulting mixture was extracted with dichloromethane. The dichloromethane layer was successively twice washed with an 1N HCl solution and water, dried over MgSO4, filtered and concentrated to give a crude oil. This oil was further purified by flash chromatography (silicagel, EtOAc) and triturated with diethyl ether to give 1-(4-chlorophenyl)-2-(2,4-dichlorophenyl)-5-methylsulfanyl-N-(piperidin-1-yl)-1H-imidazole-4-carboxamide in 72% yield, mp 170° C. (dec);

Workup

  1. extractionthe resulting mixture was extracted with dichloromethane
  2. washThe dichloromethane layer was successively twice washed with an 1N HCl solution and water
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give a crude oil
  7. customThis oil was further purified by flash chromatography (silicagel, EtOAc)
  8. customtriturated with diethyl ether

Sources & evidence

ORD record
ord-a43c986dd2844ec9a35a05da2dac0891
Source dataset
uspto-grants-2009_04
Patent number
US07524867B2

Reaction notes

Loading…