Water → 3-(1-(4-(3-(piperidin-1-yl)propoxy)-2,3-difluorophenyl)-1H-tetrazol-5-yl)-5-(1-isopentyl-1H-pyrazol-4-yl)pyridin-2-amine

HRID 1896081Notes

Reaction equation

HRID 1896081 reaction equation
Br[CH:2](C)[CH2:3][CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([N:12]2[C:16]([C:17]3[C:18]([NH2:33])=[N:19][CH:20]=[C:21]([C:23]4[CH:24]=[N:25][N:26]([CH2:28][CH2:29][CH:30]([CH3:32])[CH3:31])[CH:27]=4)[CH:22]=3)=[N:15][N:14]=[N:13]2)=[C:8]([F:34])[C:7]=1[F:35].[NH:37]1[CH2:42][CH2:41][CH2:40][CH2:39][CH2:38]1.O.O1CCN(CCCCOC2C=CC(N3C(C4C(N)=NC=C(C5C=NN(CCC(C)C)C=5)C=4)=NN=N3)=C(F)C=2F)CC1>C1COCC1>[N:37]1([CH2:2][CH2:3][CH2:4][O:5][C:6]2[CH:11]=[CH:10][C:9]([N:12]3[C:16]([C:17]4[C:18]([NH2:33])=[N:19][CH:20]=[C:21]([C:23]5[CH:24]=[N:25][N:26]([CH2:28][CH2:29][CH:30]([CH3:32])[CH3:31])[CH:27]=5)[CH:22]=4)=[N:15][N:14]=[N:13]3)=[C:8]([F:34])[C:7]=2[F:35])[CH2:42][CH2:41][CH2:40][CH2:39][CH2:38]1

Participants

6

Reactant 4

HCID 962WaterHCID 8082PiperidineHCID 67377779HCID 67377779, compoundHCID 673779643-(1-(4-(3-bromobutoxy)-2,3-difluorophenyl)-1H-tetrazol-5-yl)-5-(1-isopentyl-1H-pyrazol-4-yl)pyridin-2-amine2×

Product 1

HCID 673779123-(1-(4-(3-(piperidin-1-yl)propoxy)-2,3-difluorophenyl)-1H-tetrazol-5-yl)-5-(1-isopentyl-1H-pyrazol-4-yl)pyridin-2-amineYield 78%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

As shown in step 5-iii of Scheme 5,3-(1-(4-(3-bromobutoxy)-2,3-difluorophenyl)-1H-tetrazol-5-yl)-5-(1-isopentyl-1H-pyrazol-4-yl)pyridin-2-amine (Compound 1021, 111 mg, 0.203 mmol) was dissolved in 5 mL of THF and cooled to 0° C. The mixture was treated with piperidine (0.06 mL, 0.61 mmol), warmed to 70° C., and stirred for 16 hours. The reaction was cooled to room temperature, treated with cold water, and extracted with CHCl3 (50 mL). The organics were washed with water, washed with brine, dried over sodium sulfate, filtered, and the volatiles removed under reduced pressure. The residue was purified by silica gel chromatography (5% MeOH/CHCl3) to provide 3-(1-(4-(3-(piperidin-1-yl)propoxy)-2,3-difluorophenyl)-1H-tetrazol-5-yl)-5-(1-isopentyl-1H-pyrazol-4-yl)pyridin-2-amine (Compound 150, 70 mg, 78% yield).

Workup

  1. temperaturewarmed to 70° C.
  2. temperatureThe reaction was cooled to room temperature
  3. extractionextracted with CHCl3 (50 mL)
  4. washThe organics were washed with water
  5. washwashed with brine
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. customthe volatiles removed under reduced pressure
  9. customThe residue was purified by silica gel chromatography (5% MeOH/CHCl3)

Sources & evidence

ORD record
ord-9800c1489d6a43ddafbff17df1b4a27d
Source dataset
uspto-grants-2013_08
Patent number
US08518938B2

Reaction notes

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