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Acetic Acid → 6-Methoxy-8-{4-[1-(8-quinolinyl)-4-piperidinyl]-1-piperazinyl}quinoline

HRID 2241966
Notes
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Reaction equation

HRID 2241966 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[C:11]([N:13]3[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]3)[CH:12]=1)[N:9]=[CH:8][CH:7]=[CH:6]2.[N:19]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][C:27]=2[N:29]2[CH2:34][CH2:33][C:32](=O)[CH2:31][CH2:30]2)[CH:22]=[CH:21][CH:20]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C>ClC(Cl)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[C:11]([N:13]3[CH2:14][CH2:15][N:16]([CH:32]4[CH2:31][CH2:30][N:29]([C:27]5[CH:26]=[CH:25][CH:24]=[C:23]6[C:28]=5[N:19]=[CH:20][CH:21]=[CH:22]6)[CH2:34][CH2:33]4)[CH2:17][CH2:18]3)[CH:12]=1)[N:9]=[CH:8][CH:7]=[CH:6]2
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 184141776-Methoxy-8-(piperazin-1-YL)quinolineHCID 592048421-Quinolin-8-yl-piperidin-4-one

Product 1

HCID 160910816-Methoxy-8-{4-[1-(8-quinolinyl)-4-piperidinyl]-1-piperazinyl}quinolineYield 44.1%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

To a solution of 0.247 g of 6-methoxy-8-piperazino-quinoline (Step 4) in 10 mL of dichloroethane, was added 0.226 g of 1-quinolin-8-yl-piperidin-4-one (Step 6) followed by 0.274 g of sodium triacetoxyborohydride and 0.1 mL acetic acid. The reaction was stirred at room temperature overnight. It was quenched with 1N NaOH, and the product was extracted with CH2Cl2. The organic phase was washed with water and dried over magnesium sulfate. The product crystallized and filtered to give 0.200 g of the desired product. Mp.194-197° C.; MS (ES) m/z (relative intensity): 454 (M++−H, 100).

Workup

  1. customIt was quenched with 1N NaOH
  2. extractionthe product was extracted with CH2Cl2
  3. washThe organic phase was washed with water
  4. dry with materialdried over magnesium sulfate
  5. customThe product crystallized
  6. filtrationfiltered

Sources & evidence

ORD record
ord-3bfceb8e57de4073b54fd799a10f314a
Source dataset
uspto-grants-2010_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07671056B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes