Sodium Carbonate → HCID 178452838, compound

HRID 1529263Notes

Reaction equation

HRID 1529263 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][O:12]1)[N:6]=[C:5]2[C:17]1[N:22]=[C:21]([N:23]2[CH2:28][CH2:27][CH:26]([NH:29][C:30](=[O:36])[O:31][C:32]([CH3:35])([CH3:34])[CH3:33])[CH2:25][CH2:24]2)[CH:20]=[N:19][CH:18]=1.CC1(C)C(C)(C)OB([C:45]2[CH:46]=[C:47]3[C:53]([C:54]([F:57])([F:56])[F:55])=[N:52][NH:51][C:48]3=[N:49][CH:50]=2)O1.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[O:12]1[CH2:13][CH2:14][CH2:15][CH2:16][CH:11]1[N:7]1[C:8]2[C:4](=[CH:3][C:2]([C:45]3[CH:46]=[C:47]4[C:53]([C:54]([F:57])([F:56])[F:55])=[N:52][NH:51][C:48]4=[N:49][CH:50]=3)=[CH:10][CH:9]=2)[C:5]([C:17]2[N:22]=[C:21]([N:23]3[CH2:28][CH2:27][CH:26]([NH:29][C:30](=[O:36])[O:31][C:32]([CH3:34])([CH3:35])[CH3:33])[CH2:25][CH2:24]3)[CH:20]=[N:19][CH:18]=2)=[N:6]1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 67959723tert-butyl 1-(6-(5-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-3-yl)pyrazin-2-yl)piperidin-4-ylcarbamate2×HCID 178431098HCID 178431098, compound

Product 1

HCID 178452838HCID 178452838, compoundYield 52.7%

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

A suspension of tert-butyl 1-(6-(5-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-3-yl)pyrazin-2-yl)piperidin-4-ylcarbamate (compound 1e) (150 mg, 0.269 mmol), crude 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine 6a (177 mg, 0.57 mmol), Pd(dppf)Cl2 (22 mg, 0.03 mmol, Strem) and aqueous Na2CO3, 2.0 M (0.27 mL, 0.54 mmol) in dioxane (3 mL) was capped, degassed and backfilled with argon. The reaction was heated at 120° C. in a microwave for 45 min. The reaction mixture was diluted with EtOAc (75 mL) and washed with saturated NaHCO3 solution (50 mL) and brine (75 mL), dried over MgSO4, concentrated in vacuo and purified by silica gel chromatography (eluent: 0.5-3.5% MeOH/DCM), affording tert-butyl 1-(6-(1-(tetrahydro-2H-pyran-2-yl)-5-(3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl)-1H-indazol-3-yl)pyrazin-2-yl)piperidin-4-ylcarbamate (94 mg, 52% yield). MS (ESI, pos. ion) m/z: 664.3 (M+1). A solution of tert-butyl 1-(6-(1-(tetrahydro-2H-pyran-2-yl)-5-(3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl)-1H-indazol-3-yl)pyrazin-2-yl)piperidin-4-ylcarbamate (87 mg, 0.13 mmol) in dioxane (3 mL) was treated with HCl, 36.5-38.0% (0.11 mL, 1.31 mmol). The reaction mixture was heated at 90° C. After 3 h, the reaction mixture was cooled to 23° C. and concentrated. The residue (as HCl salt) was free-based using a Silicycle Si-propylsulfonic acid ion exchange column (catalog # R51230B). The compound was diluted in MeOH and added to a pad of the resin (wetted and flushed with 10 mL MeOH). It was flushed with MeOH (50 mL), and then the product was “released” using 2.0 M NH3 in MeOH solution (50 ml). The final filtrate was concentrated, affording 1-(6-(5-(3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl)-1H-indazol-3-yl)pyrazin-2-yl)piperidin-4-amine. MS (ESI, pos. ion) m/z: 480.2 (M+1).

Workup

  1. customwas capped
  2. customdegassed
  3. additionThe reaction mixture was diluted with EtOAc (75 mL)
  4. washwashed with saturated NaHCO3 solution (50 mL) and brine (75 mL)
  5. dry with materialdried over MgSO4
  6. concentrationconcentrated in vacuo
  7. custompurified by silica gel chromatography (eluent: 0.5-3.5% MeOH/DCM)

Sources & evidence

ORD record
ord-b0270c3f4f644e32a356ed14b7b23110
Source dataset
uspto-grants-2015_07
Patent number
US09090593B2

Reaction notes

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