Sodium Bicarbonate → 4-tert-Butyl-N-[4-chloro-2-(1H-indazol-3-yl)-phenyl]-benzenesulfonamide

HRID 1480916Notes

Reaction equation

HRID 1480916 reaction equation
B[C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[NH:9][S:10]([C:13]1[CH:18]=[CH:17][C:16]([C:19]([CH3:22])([CH3:21])[CH3:20])=[CH:15][CH:14]=1)(=[O:12])=[O:11].C1(P(C2CCCCC2)C2C=CC=CC=2C2C(C(C)C)=CC(C(C)C)=CC=2C(C)C)CCCCC1.I[C:58]1[C:66]2[C:61](=[CH:62][CH:63]=[CH:64][CH:65]=2)[NH:60][N:59]=1.C(=O)(O)[O-].[Na+]>C(OCC)(=O)C.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O1CCCC1>[C:19]([C:16]1[CH:17]=[CH:18][C:13]([S:10]([NH:9][C:3]2[CH:4]=[CH:5][C:6]([Cl:8])=[CH:7][C:2]=2[C:58]2[C:66]3[C:61](=[CH:62][CH:63]=[CH:64][CH:65]=3)[NH:60][N:59]=2)(=[O:12])=[O:11])=[CH:14][CH:15]=1)([CH3:22])([CH3:21])[CH3:20]

Participants

8

Reactant 4

HCID 516892Sodium BicarbonateHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 178419148HCID 178419148, compoundHCID 178506566HCID 178506566, compound

Product 1

HCID 573783024-tert-Butyl-N-[4-chloro-2-(1H-indazol-3-yl)-phenyl]-benzenesulfonamideYield 19.4%

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

A 25 mL scintillation vial was charged with N-(2-boranyl-4-chloro-phenyl)-4-tert-butyl-benzenesulfonamide (90 mg, 0.27 mmol), tris(dibenzylideneacetone)dipalladium (18 mg, 0.02 mmol), 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (24 mg, 0.05 mmol), 3-iodo-1H-indazole (65 mg, 0.27 mmol), saturated aqueous sodium bicarbonate (1 mL), and tetrahydrofuran (1.5 mL). The reaction was stirred at 80° C. under nitrogen overnight. The following day, the reaction was cooled to room temperature and diluted with 10 mL of ethyl acetate. The solution was subsequently washed with saturated aqueous NaHCO3 and brine, and then concentrated to dryness. The crude product was purified by flash chromatograph to yield 23 mg of product: MS (ES) M+H expected 441.1, found 441.1.

Workup

  1. temperatureThe following day, the reaction was cooled to room temperature
  2. washThe solution was subsequently washed with saturated aqueous NaHCO3 and brine
  3. concentrationconcentrated to dryness
  4. customThe crude product was purified by flash chromatograph

Sources & evidence

ORD record
ord-49f0cae4a32d46b880e893194f137c3a
Source dataset
uspto-grants-2016_08
Patent number
US09409909B2

Reaction notes

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