Piperidine → 2-[2-Fluoro-4-(3-piperidin-1-yl-propoxy)-phenyl]-7-methyl-imidazo[1,2-a]pyridine

HRID 1824533

Reaction equation

HRID 1824533 reaction equation
Cl[CH2:2][CH2:3][CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[N:13]=[C:14]3[CH:19]=[C:18]([CH3:20])[CH:17]=[CH:16][N:15]3[CH:21]=2)=[C:8]([F:22])[CH:7]=1.[NH:23]1[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1>>[N:23]1([CH2:2][CH2:3][CH2:4][O:5][C:6]2[CH:11]=[CH:10][C:9]([C:12]3[N:13]=[C:14]4[CH:19]=[C:18]([CH3:20])[CH:17]=[CH:16][N:15]4[CH:21]=3)=[C:8]([F:22])[CH:7]=2)[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1

Participants

3

Reactant 2

HCID 8082PiperidineHCID 220156172-(4'-Chloropropoxy-2'fluorophenyl)-7-methylimidazo[1,2-a]pyridine

Product 1

HCID 220156412-[2-Fluoro-4-(3-piperidin-1-yl-propoxy)-phenyl]-7-methyl-imidazo[1,2-a]pyridine

Procedure

The product of Step C (118 mg) and piperidine (1.5 mL) were heated at 100° C. for 2.5 hours. The reaction was cooled to ambient temperature and partitioned between ethyl acetate (10 mL) and saturated sodium bicarbonate solution (10 mL). The aqueous portion was extracted with additional ethyl acetate (10 mL) and the organic portions combined and evaporated. The residue was purified via silica gel chromatography (dichloromethane/methanol) to give the title compound (130 mg). 1H-NMR (CD3OD) 8.22 (d, J=8.0 Hz, 1H), 7.98 (m, 2H), 7.27 (s, 1H), 6.76 (m, 3H), 4.00 (t, J=6.0 Hz, 2H), 2.48 (m, 6H), 2.38 (s, 3H), 1.96 (m, 2H), 1.61 (m, 4H), 1.47 (m, 2H).

Workup

  1. custompartitioned between ethyl acetate (10 mL) and saturated sodium bicarbonate solution (10 mL)
  2. extractionThe aqueous portion was extracted with additional ethyl acetate (10 mL)
  3. customevaporated
  4. customThe residue was purified via silica gel chromatography (dichloromethane/methanol)

Sources & evidence

ORD record
ord-be7db30ec1dc402aa1881d66165cfb27
Source dataset
uspto-grants-2006_05
Patent number
US07041828B2

Linked notes

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