3-(5-(difluoromethoxy)-3-(tributylstannyl)-1H-indazol-1-yl)-N,N-dimethylpropan-1-amine → 2-(5-(difluoromethoxy)-1-methyl-1H-indazol-3-yl)-N-isopropyl-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide

HRID 246740Notes

Reaction equation

HRID 246740 reaction equation
[F:1][CH:2]([F:32])[O:3][C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][CH:12]=1)[N:9]([CH2:13]CCN(C)C)[N:8]=[C:7]2[Sn](CCCC)(CCCC)CCCC.Br[C:34]1[N:39]=[C:38]2[C:40]([C:43]([NH:45][CH:46]([CH3:48])[CH3:47])=[O:44])=[CH:41][NH:42][C:37]2=[N:36][CH:35]=1>CN(C=O)C.[Cu]I.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>[F:32][CH:2]([F:1])[O:3][C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][CH:12]=1)[N:9]([CH3:13])[N:8]=[C:7]2[C:34]1[N:39]=[C:38]2[C:40]([C:43]([NH:45][CH:46]([CH3:48])[CH3:47])=[O:44])=[CH:41][NH:42][C:37]2=[N:36][CH:35]=1

Participants

6

Reactant 2

HCID 712800443-(5-(difluoromethoxy)-3-(tributylstannyl)-1H-indazol-1-yl)-N,N-dimethylpropan-1-amineHCID 866780102-Bromo-N-isopropyl-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide

Product 1

HCID 712799912-(5-(difluoromethoxy)-1-methyl-1H-indazol-3-yl)-N-isopropyl-5H-pyrrolo[2,3-b]pyrazine-7-carboxamideYield 9%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 3-(5-(difluoromethoxy)-3-(tributylstannyl)-1H-indazol-1-yl)-N,N-dimethylpropan-1-amine (200 mg, 0.36 mmol) and 2-bromo-N-isopropyl-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide (180 mg, 0.43 mmol) in DMF (10 mL) were added CuI (18 mg, 0.08 mmol) and Pd(PPh3)4 (14 mg, 0.014 mmol), Then the reaction mixture was degassed by bubbling nitrogen for 3 minutes and refilled with nitrogen. The mixture was heated to 80° C. for 5 hours under nitrogen, after cooling to room temperature, water (50 mL) was added and product extracted with EtOAc (3×40 mL), the combined organic layers were dried over Na2SO4, concentrated under reduced pressure and the residue was purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm; inject volume: 3 mL/inj, flow rate: 20 mL/min; wavelength: 214 nm and 254 nm; the gradient conditions are: 40% acetonitrile/60% water (0.1% trifluoroacetic acid V/V) initially, and then proceed to 50% acetonitrile/50% water (0.1% trifluoroacetic acid V/V) in a linear fashion after just 9 min) to afford 2-(5-(difluoromethoxy)-1-methyl-1H-indazol-3-yl)-N-isopropyl-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide as yellow solid (13 mg, 9%). LCMS: (M+H)+=472; 1H NMR (300 MHz, CD3OD): δ 9.11 (s, 1H), 8.24 (s, 1H), 8.11 (s, 1H), 7.69 (d, 1H, J=9.0 Hz), 7.38 (d, 1H, J=8.7 Hz), 6.85 (t, 1H, J=74.1 Hz), 4.85-4.78 (m, 2H), 4.65-4.60 (m, 1H), 3.34-3.32 (m, 2H), 2.89 (s, 6H), 2.50-2.40 (m, 2H), 1.43 (s, 3H), 1.40 (s, 3H).

Workup

  1. customthe reaction mixture was degassed
  2. customby bubbling nitrogen for 3 minutes
  3. additionrefilled with nitrogen
  4. temperatureafter cooling to room temperature
  5. additionwater (50 mL) was added
  6. extractionproduct extracted with EtOAc (3×40 mL)
  7. dry with materialthe combined organic layers were dried over Na2SO4
  8. concentrationconcentrated under reduced pressure
  9. customthe residue was purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm

Sources & evidence

ORD record
ord-c8f37d7a99c44bc3b9ef47dd7f7e2c20
Source dataset
uspto-grants-2014_02
Patent number
US08658646B2

Reaction notes

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