Piperidine → 3-Nitro-4-piperidin-1-ylpyridine

HRID 69827

Reaction equation

HRID 69827 reaction equation
Cl[C:2]1[CH:7]=[CH:6][N:5]=[CH:4][C:3]=1[N+:8]([O-:10])=[O:9].[NH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][CH2:12]1>C(O)C>[N+:8]([C:3]1[CH:4]=[N:5][CH:6]=[CH:7][C:2]=1[N:11]1[CH2:16][CH2:15][CH2:14][CH2:13][CH2:12]1)([O-:10])=[O:9]

Participants

4

Reactant 2

HCID 8082PiperidineHCID 27357814-Chloro-3-nitropyridine

Product 1

HCID 35076693-Nitro-4-piperidin-1-ylpyridineYield 95%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent2×

Procedure

A solution of 4-chloro-3-nitropyridine (1.0 equiv.) and piperidine (2.0 equiv.) in ethanol, at a concentration of 0.5 M, was stirred at rt for 48 hours at which time the ethanol was removed in vacuo. The residue was partitioned between EtOAc (300 mL) and Na2CO3(sat) (75 mL), was washed further with H2O (50 mL), NaCl(sat.) (50 mL), was dried over MgSO4, was filtered and the volatiles were removed in vacuo yielding 3-nitro-4-(piperidin-1-yl)pyridine (95%). LCMS (m/z): 207.7 (MH+); LC Rt=1.60 min. 1H NMR (CDCl3): δ 8.80 (s, 1H), 8.31 (d, J=5.7, 1H), 6.84 (d, J=6.3, 1H), 3.18-3.21 (m, 4H), 1.64-1.78 (m, 6H).

Workup

  1. customwas removed in vacuo
  2. customThe residue was partitioned between EtOAc (300 mL) and Na2CO3(sat) (75 mL)
  3. washwas washed further with H2O (50 mL), NaCl(sat.) (50 mL)
  4. dry with materialwas dried over MgSO4
  5. filtrationwas filtered
  6. customthe volatiles were removed in vacuo

Sources & evidence

ORD record
ord-abee4ba2c18f413e9380fa98234b3b93
Source dataset
uspto-grants-2014_09
Patent number
US08822497B2

Linked notes

Loading…