Potassium Carbonate → 1-(3-(4-Chloro-phenyl)-1-[3-[4-(2-fluoro-phenyl)-piperazin-1-yl]-propyl]-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl)-ethanone

HRID 271741Notes

Reaction equation

HRID 271741 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:12]3[CH2:13][N:14]([C:17](=[O:19])[CH3:18])[CH2:15][CH2:16][C:11]=3[N:10]([CH2:20][CH2:21][CH2:22]Cl)[N:9]=2)=[CH:4][CH:3]=1.[F:24][C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=1[N:31]1[CH2:36][CH2:35][NH:34][CH2:33][CH2:32]1.C([O-])([O-])=O.[K+].[K+].CO.CCOC(C)=O>CC#N.[N+](CCCC)(CCCC)(CCCC)CCCC.[I-]>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:12]3[CH2:13][N:14]([C:17](=[O:19])[CH3:18])[CH2:15][CH2:16][C:11]=3[N:10]([CH2:20][CH2:21][CH2:22][N:34]3[CH2:33][CH2:32][N:31]([C:26]4[CH:27]=[CH:28][CH:29]=[CH:30][C:25]=4[F:24])[CH2:36][CH2:35]3)[N:9]=2)=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 705291-(2-Fluorophenyl)piperazineHCID 179754181-[3-(4-Chloro-phenyl)-1-(3-chloro-propyl)-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl]-ethanoneHCID 21584119Ethylacetate methanol

Product 1

HCID 102784041-(3-(4-Chloro-phenyl)-1-[3-[4-(2-fluoro-phenyl)-piperazin-1-yl]-propyl]-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl)-ethanoneYield 41%

Reagents, catalysts & solvents 2

HCID 67553Tetrabutylammonium IodideCatalystHCID 6342AcetonitrileSolvent2×

Procedure

1-[3-(4-Chloro-phenyl)-1-(3-chloro-propyl)-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl]-ethanone (0.053 g, 0.15 mmol) was dissolved in CH3CN (0.5 mL) and a solution of 1-(2-fluorophenyl)piperazine (0.053 g, 0.30 mmol) in CH3CN (0.5 mL) was added, followed by K2CO3 (0.031 g, 0.22 mmol) and Bu4NI (0.018 g, 0.05 mmol). The mixture was stirred at room temperature for 7 d. Preparative TLC (silica, 5% MeOH/EtOAc) afforded 30 mg (41%) of the title compound. MS (electrospray): exact mass calculated for C27H31ClFN5O, 495.22; m/z found, 496.3 [M+H]+. 1H NMR (500 MHz, CDCl3, a mixture of 1:1 rotamers): 7.60 (d, J=8.3 Hz, 1H), 7.54 (d, J=8.3 Hz, 1H), 7.39 (d, J=8.3 Hz, 1H), 7.35 (d, J=8.3 Hz, l H), 7.06-6.90 (m, 4H), 4.77 (s, 1H), 4.60 (s, 1H), 4.10 (t, J=6.8 Hz, 2H), 3.92 (t, J=5.7 Hz, 1H), 3.74 (t, J=5.7 Hz, 1H), 3.08 (br s, 4H), 2.83 (t, J=5.6 Hz, 1H), 2.77 (t, J=5.7 Hz, 1H), 2.58 (br s, 4H), 2.41-2.38 (m, 2H), 2.19 (s, 1.5H), 2.13 (s, 1.5H), 2.10-2.07 (m, 2H).

Sources & evidence

ORD record
ord-2a0d360c04c541b69181f1ebb188ac5b
Source dataset
uspto-grants-2008_11
Patent number
US07452890B2

Reaction notes

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