Sodium hydride → 5-Bromo-1-(methylsulfonyl)indoline

HRID 1930280

Reaction equation

HRID 1930280 reaction equation
[H-].[Na+].[Br:3][C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][CH:12]=1)[NH:9][CH2:8][CH2:7]2.[CH3:13][S:14](Cl)(=[O:16])=[O:15]>CN(C=O)C>[Br:3][C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][CH:12]=1)[N:9]([S:14]([CH3:13])(=[O:16])=[O:15])[CH2:8][CH2:7]2

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 31297Methanesulfonyl chlorideHCID 34115665-Bromoindoline

Product 1

HCID 5759865-Bromo-1-(methylsulfonyl)indolineYield 61%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To DMF (5.0 ml) was added sodium hydride (53 mg, 1.3 mmol) and the solution stirred at room temperature for 30 min. 5-Bromoindoline (240 mg, 1.2 mmol) was added and the solution was stirred at room temperature for 30 min. Methanesulfonyl chloride (94 ul, 1.2 mmol) was added and the solution stirred at room temperature overnight, then concentrated in vacuo. The crude product was purified by column chromatography on silica gel eluting with 2% CH3OH/CHCl3 to give the title compound (202 mg, 60%).

Workup

  1. stirringthe solution was stirred at room temperature for 30 min
  2. stirringthe solution stirred at room temperature overnight
  3. concentrationconcentrated in vacuo
  4. customThe crude product was purified by column chromatography on silica gel eluting with 2% CH3OH/CHCl3

Sources & evidence

ORD record
ord-2c5c3befe9dc4c7284ce606de1070ab0
Source dataset
uspto-grants-2012_05
Patent number
US08188104B2

Linked notes

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