Acetonitrile → 2-amino-5-[3-(2-methoxy-phenyl)-1-(2-trimethylsilanylethoxymethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-N,N-dimethyl-benzamide

HRID 2388970Notes

Reaction equation

HRID 2388970 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[C:17]2[C:12](=[N:13][CH:14]=[C:15](B3OC(C)(C)C(C)(C)O3)[CH:16]=2)[N:11]([CH2:27][O:28][CH2:29][CH2:30][Si:31]([CH3:34])([CH3:33])[CH3:32])[N:10]=1.[NH2:35][C:36]1[CH:46]=[CH:45][C:44](Br)=[CH:43][C:37]=1[C:38]([N:40]([CH3:42])[CH3:41])=[O:39].C(#N)C.C(=O)(O)[O-].[Na+]>C1C=CC([PH+]([C]2[CH][CH][CH][CH]2)C2C=CC=CC=2)=CC=1.C1C=CC([PH+]([C]2[CH][CH][CH][CH]2)C2C=CC=CC=2)=CC=1.C(Cl)Cl.Cl[Pd]Cl.[Fe].O.ClCCl>[NH2:35][C:36]1[CH:46]=[CH:45][C:44]([C:15]2[CH:16]=[C:17]3[C:9]([C:4]4[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=4[O:2][CH3:1])=[N:10][N:11]([CH2:27][O:28][CH2:29][CH2:30][Si:31]([CH3:34])([CH3:32])[CH3:33])[C:12]3=[N:13][CH:14]=2)=[CH:43][C:37]=1[C:38]([N:40]([CH3:42])[CH3:41])=[O:39]

Participants

8

Reactant 4

HCID 6342AcetonitrileHCID 516892Sodium BicarbonateHCID 509995122-Amino-5-bromo-N,N-dimethylbenzamideHCID 598360923-(2-methoxy-phenyl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-(2-trimethylsilanyl-ethoxy-methyl)-1H-pyrazolo[3,4-b]pyridine

Product 1

HCID 579757432-amino-5-[3-(2-methoxy-phenyl)-1-(2-trimethylsilanylethoxymethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-N,N-dimethyl-benzamideYield 33.3%

Reagents, catalysts & solvents 3

HCID 53485975CID 53485975CatalystHCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

650 mg (1.35 mmol) of 3-(2-methoxy-phenyl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-b]pyridine, 395 mg (1.62 mmol) 2-amino-5-bromo-N,N-dimethyl-benzamide and 55 mg (67 μmol) of dichloro[1,1′-bis(diphenylphoshino)ferrocene]palladium(II) dichloromethane adduct were placed in a vial. 8 mL of acetonitrile and 8 mL of a saturated aqueous solution of sodium bicarbonate were added. The vial was closed and the mixture irradiated in a Personal Chemistry® Optimizer to 100° C. for 15 min. The crude mixture was distributed between dichloromethane and water. The aqueous layer was extracted three times with dichloromethane. The combined organic phases were dried over sodium sulfate and evaporated. The crude was purified by flash chromatography on silica gel using a gradient of ethyl acetate containing 15% of methanol in hexanes to afford 288 mg (0.45 mmol, 33%) of 2-amino-5-[3-(2-methoxy-phenyl)-1-(2-trimethylsilanylethoxymethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-N,N-dimethyl-benzamide as a pale beige solid. MS: m/z 518.1 (M+H+).

Workup

  1. customThe vial was closed
  2. customthe mixture irradiated in a Personal Chemistry® Optimizer to 100° C. for 15 min
  3. extractionThe aqueous layer was extracted three times with dichloromethane
  4. dry with materialThe combined organic phases were dried over sodium sulfate
  5. customevaporated
  6. customThe crude was purified by flash chromatography on silica gel using a gradient of ethyl acetate containing 15% of methanol in hexanes

Sources & evidence

ORD record
ord-b473fb104f5249559b1d75fa957dc614
Source dataset
uspto-grants-2012_09
Patent number
US08268994B2

Reaction notes

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