Potassium Carbonate → 7-{(1R)-1-[6-(1-methyl-1H-pyrazol-4-yl) [1,2,4]triazolo[4,3-b]pyridazin-3-yl]ethoxy}furo[3,2-c]pyridin-6-amine

HRID 912058Notes

Reaction equation

HRID 912058 reaction equation
Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([C@H:11]([O:13][C:14]3[C:15]4[O:23][CH:22]=[CH:21][C:16]=4[CH:17]=[N:18][C:19]=3[NH2:20])[CH3:12])=[N:9][N:10]=2)[N:7]=1.[CH3:24][N:25]1[CH:29]=[C:28](B2OC(C)(C)C(C)(C)O2)[CH:27]=[N:26]1.C(=O)([O-])[O-].[K+].[K+].O1CCOCC1>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>[CH3:24][N:25]1[CH:29]=[C:28]([C:2]2[CH:3]=[CH:4][C:5]3[N:6]([C:8]([C@H:11]([O:13][C:14]4[C:15]5[O:23][CH:22]=[CH:21][C:16]=5[CH:17]=[N:18][C:19]=4[NH2:20])[CH3:12])=[N:9][N:10]=3)[N:7]=2)[CH:27]=[N:26]1

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 312751,4-DioxaneHCID 27739871-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleHCID 578124057-[(1R)-1-(6-chloro[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethoxy]furo[3,2-c]pyridin-6-amine

Product 1

HCID 578123787-{(1R)-1-[6-(1-methyl-1H-pyrazol-4-yl) [1,2,4]triazolo[4,3-b]pyridazin-3-yl]ethoxy}furo[3,2-c]pyridin-6-amine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Procedure

A mixture of 7-[(R)-1-(6-chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)-ethoxy]furo[3,2-c]pyridine-6-ylamine (15.0 mg, 0.045 mmol), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (18.9 mg, 0.091 mmol), Pd(PPh3)4 (5 mg, 0.004 mmol), potassium carbonate (18.8 mg, 0.136 mmol) and 4:1 dioxane:water (2 mL) was heated in a microwave reactor at 100° C. for 30 min. The solution was loaded into a SCX cartridge, washed with MeOH and ejected with 2M NH3 in MeOH. The filtrate was concentrated in vacuo, redissolved in MeOH (0.5 mL) and purified via HPLC. The fractions containing the pure product were concentrated in vacuo to afford the title compound as a white solid. 1H NMR (400 MHz, CD3OD): δ=2.13 (d, J=6.6 Hz, 3H), 3.96 (s, 3H), 6.33 (q, J=6.6 Hz, 1H), 6.76 (d, J=2.3 Hz, 1H), 7.56 (d, J=2.3 Hz, 1H), 7.63 (d, J=9.9 Hz, 1H), 7.85 (s, 1H), 7.93 (s, 1H), 8.08 (s, 1H), 8.13 (d, J=9.6 Hz, 1H). MS (ES+): m/z 377.11 (100) [MH+]. HPLC: tR=1.95 min (ZQ3, polar—5 min).

Workup

  1. washwashed with MeOH
  2. concentrationThe filtrate was concentrated in vacuo
  3. dissolutionredissolved in MeOH (0.5 mL)
  4. custompurified via HPLC
  5. additionThe fractions containing the pure product
  6. concentrationwere concentrated in vacuo

Sources & evidence

ORD record
ord-205bd07b08664b9d93cd6f5bac68a40a
Source dataset
uspto-grants-2011_09
Patent number
US08022206B2

Reaction notes

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