1,2-Dimethoxyethane → 6-(6-{1-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-1H-pyrazol-4-yl}-imidazo[1,2-b]pyridazin-3-ylmethyl)-quinoline

HRID 69249Notes

Reaction equation

HRID 69249 reaction equation
Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([CH2:11][C:12]3[CH:13]=[C:14]4[C:19](=[CH:20][CH:21]=3)[N:18]=[CH:17][CH:16]=[CH:15]4)=[CH:9][N:10]=2)[N:7]=1.[O:22]1[CH2:27][CH2:26][CH2:25][CH2:24][CH:23]1[O:28][CH2:29][CH2:30][N:31]1[CH:35]=[C:34](B2OC(C)(C)C(C)(C)O2)[CH:33]=[N:32]1.COCCOC.C([O-])([O-])=O.[K+].[K+]>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.CCOC(C)=O>[O:22]1[CH2:27][CH2:26][CH2:25][CH2:24][CH:23]1[O:28][CH2:29][CH2:30][N:31]1[CH:35]=[C:34]([C:2]2[CH:3]=[CH:4][C:5]3[N:6]([C:8]([CH2:11][C:12]4[CH:13]=[C:14]5[C:19](=[CH:20][CH:21]=4)[N:18]=[CH:17][CH:16]=[CH:15]5)=[CH:9][N:10]=3)[N:7]=2)[CH:33]=[N:32]1

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 11430Potassium CarbonateHCID 579174466-(6-Chloro-imidazo[1,2-b]pyridazin-3-ylmethyl)-quinolineHCID 593418191-[2-(oxan-2-yloxy)ethyl]-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Product 1

HCID 579173046-(6-{1-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-1H-pyrazol-4-yl}-imidazo[1,2-b]pyridazin-3-ylmethyl)-quinolineYield 80%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
90 °C

Procedure

6-(6-Chloro-imidazo[1,2-b]pyridazin-3-ylmethyl)-quinoline (Example 14, 500 mg, 1.679 mmol) was introduced in a microwave reactor together with 1-[2-(tetrahydro-pyran-2-yloxy)ethyl]-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole (Stage 171.4, 812 mg, 2.52 mmol) and DME (10 mL). The solution was degassed with argon before adding Pd(PPh3)2Cl2 (36 mg, 0.051 mmol) and 2 M K2CO3 (2.267 mL, 4.53 mmol). The mixture was stirred at 90° C. for 5.5 h. The RM was taken up with EtOAc and washed with NaHCO3 and brine. The organic layer was dried over Na2SO4, filtered and concentrated in vacuo to afford a first batch of the desired product as a brownish oil (80% pure). 10% of the residue was dissolved in DCM and purified by flash chromatography (DCM/MeOH=100:0→93.5:6.5) to afford the title compound as a brownish oil (tR 2.30 min (8), MH+=455.1).

Workup

  1. customThe solution was degassed with argon
  2. washwashed with NaHCO3 and brine
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-516640fd06bf49afbd2f18d1df104d87
Source dataset
uspto-grants-2014_09
Patent number
US08822468B2

Reaction notes

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