Piperidine → HCID 5330062, compound

HRID 1178645Notes

Reaction equation

HRID 1178645 reaction equation
[NH:1]1[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[Cl:7][C:8]1[CH:13]=[C:12]([Cl:14])[C:11]([O:15][CH3:16])=[CH:10][C:9]=1[NH:17][C:18]1[C:23]([C:24]#[N:25])=[CH:22][N:21]=[C:20]2[CH:26]=[C:27]([C:29]3[CH:34]=[CH:33][C:32]([CH:35]=O)=[CH:31][CH:30]=3)[S:28][C:19]=12.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCl.CN(C)C=O.C(O)(=O)C>[Cl:7][C:8]1[CH:13]=[C:12]([Cl:14])[C:11]([O:15][CH3:16])=[CH:10][C:9]=1[NH:17][C:18]1[C:23]([C:24]#[N:25])=[CH:22][N:21]=[C:20]2[CH:26]=[C:27]([C:29]3[CH:34]=[CH:33][C:32]([CH2:35][N:1]4[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]4)=[CH:31][CH:30]=3)[S:28][C:19]=12

Participants

7

Reactant 3

HCID 8082PiperidineHCID 5049666Sodium triacetoxyborohydrideHCID 10343928HCID 10343928, compound

Product 1

HCID 5330062HCID 5330062, compoundYield 17.8%

Reagents, catalysts & solvents 3

HCID 176Acetic AcidCatalystHCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

Piperidine (50 mg, 0.59 mmol) is added to a suspension of 7-[(2,4-dichloro-5-methoxyphenyl)amino]-2-(4-formylphenyl)thieno[3,2-b]pyridine-6-carbonitrile (200 mg, 0.44 mmol) in 4 mL of dichloromethane and 1 mL of N,N-dimethylformamide. The reaction mixture is cooled to 0° C. and sodium triacetoxyborohydride (500 mg, 2.4 mmol) is added. After stirring at 0° C. for 1.5 hours, a few drops of acetic acid are added and the reaction mixture is allowed to warm to room temperature and stirred overnight. The reaction is quenched by the addition of water and then partitioned between aqueous sodium bicarbonate and dichloromethane. The organic layer is dried over sodium sulfate, filtered and concentrated in vacuo. The residue is purified by flash column chromatography eluting with a gradient of 1:1 hexane:ethyl acetate to 5% methanol in ethyl acetate to provide 41 mg of 7-[(2,4-dichloro-5-methoxyphenyl)amino]-2-[4-(piperidin-1-ylmethyl)phenyl]thieno[3,2-b]pyridine-6-carbonitrile as yellow crystals, mp 218–220° C.; 1H NMR (DMSO-d6) δ 1.38 (m, 2H), 1.50 (m, 4H), 2.33 (m, 4H), 3.46 (m, 2H), 3.85 (s, 3H), 7.38 (s, 1H), 7.40 (d, J=8 Hz, 2H), 7.67 (d, J=8 Hz, 2H), 7.76 (s, 1H), 7.89 (s, 1H), 8.60 (s, 1H), 9.72 (s, 1H); MS 521.3 (M−H)−.

Workup

  1. temperatureto warm to room temperature
  2. stirringstirred overnight
  3. customThe reaction is quenched by the addition of water
  4. custompartitioned between aqueous sodium bicarbonate and dichloromethane
  5. dry with materialThe organic layer is dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue is purified by flash column chromatography
  9. washeluting with a gradient of 1:1 hexane

Sources & evidence

ORD record
ord-646c1ca0766a4affa35b4b426e121dea
Source dataset
uspto-grants-2007_10
Patent number
US07276519B2

Reaction notes

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