Piperidine → HCID 9968042, compound

HRID 2101686Notes

Reaction equation

HRID 2101686 reaction equation
[C:1]1([C:7]2[N:8]=[C:9]([C:19](O)=[O:20])[N:10]([CH3:18])[C:11]=2[C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[NH2:22][N:23]1[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1.[NH:29]1[CH2:34][CH2:33][CH2:32][CH2:31][CH2:30]1.C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.C(N(C(C)C)CC)(C)C>C(Cl)Cl.O>[N:23]1([NH:22][C:19]([C:9]2[N:10]([CH3:18])[C:11]([C:12]3[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=3)=[C:7]([C:1]3[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=3)[N:8]=2)=[O:20])[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1.[N:29]1([C:19]([C:9]2[N:10]([CH3:18])[C:11]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=3)=[C:7]([C:1]3[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=3)[N:8]=2)=[O:20])[CH2:34][CH2:33][CH2:32][CH2:31][CH2:30]1

Participants

9

Reactant 5

HCID 8082PiperidineHCID 166581-AminopiperidineHCID 81531DiisopropylethylamineHCID 2724699PyBOPHCID 22066062HCID 22066062, compound

Product 2

HCID 9968042HCID 9968042, compoundHCID 10155451HCID 10155451, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

A mixture of 4,5-diphenyl-1-methylimidazole-2-carboxylic acid (50 mg, 0.18 mmol) from Step A, 1-aminopiperidine (0.052 mL, 0.36 mmol) (containing a small percent of piperidine as an impurity), PyBOP (NovaChem) (140 mg, 0.2 mmol) and N,N-diisopropyl-N-ethylamine (DIPEA) (0.065 mL, 0.2 mmol) in methylene chloride (2 mL) was stirred at rt for 20 hr. The reaction was diluted with water and extracted twice with methylene chloride. The organic layers were washed with brine, dried over sodium sulfate, and evaporated. The residue was purified twice by prep TLC (1 mm, silica gel) eluting with 5% methylene chloride, 35% ethyl acetate in hexanes to afford the primary product N-(piperidin-1-yl)-4,5-diphenyl-1-methylimidazole-2-carboxamide and 2-(piperidin-1-ylcarbonyl)-4,5-diphenyl-1-methylimidazole as a byproduct.

Workup

  1. extractionextracted twice with methylene chloride
  2. washThe organic layers were washed with brine
  3. dry with materialdried over sodium sulfate
  4. customevaporated
  5. customThe residue was purified twice by prep TLC (1 mm, silica gel)
  6. washeluting with 5% methylene chloride, 35% ethyl acetate in hexanes

Sources & evidence

ORD record
ord-b27f14d3b39a4580b05f9c485bc26cd9
Source dataset
uspto-grants-2009_08
Patent number
US07572785B2

Reaction notes

Loading…