Benzenesulfonyl chloride → 1-(phenylsulfonyl)-3-(1-(phenylsulfonyl)-1H-imidazol-2-yl)-1H-indole

HRID 522590

Reaction equation

HRID 522590 reaction equation
[NH:1]1[CH:5]=[CH:4][N:3]=[C:2]1[C:6]1[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[N:8]([S:15]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)(=[O:17])=[O:16])[CH:7]=1.[H-].[Na+].[C:26]1([S:32](Cl)(=[O:34])=[O:33])[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1>C1COCC1>[C:18]1([S:15]([N:8]2[C:9]3[C:14](=[CH:13][CH:12]=[CH:11][CH:10]=3)[C:6]([C:2]3[N:3]([S:32]([C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)(=[O:34])=[O:33])[CH:4]=[CH:5][N:1]=3)=[CH:7]2)(=[O:17])=[O:16])[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

5

Reactant 3

HCID 7369Benzenesulfonyl chlorideHCID 24758Sodium hydrideHCID 575168363-(1H-imidazol-2-yl)-1-(phenylsulfonyl)-1H-indole

Product 1

HCID 575168371-(phenylsulfonyl)-3-(1-(phenylsulfonyl)-1H-imidazol-2-yl)-1H-indoleYield 40%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 3-(1H-imidazol-2-yl)-1-(phenylsulfonyl)-1H-indole (9ya) (20 mmol) in anhydrous THF (300 mL) at 0° C. was added sodium hydride (60% dispersion in mineral oil, 1.2 equiv, 24 mmol) and stirred for 20 min.2 Benzenesulfonyl chloride (1.2 equiv, 24 mmol) was added and the reaction mixture was stirred overnight. After dilution by 200 mL of saturated NaHCO3 solution (aqueous), the reaction mixture was extracted by ethyl acetate (600 mL). The organic layer was dried over magnesium sulfate and concentrated. The residue was purified by flash column chromatography (hexane:ethyl acetate 5:1) to give a white solid. Yield: 40%. 1H NMR (CDCl3, 300 MHz) δ 8.02-8.08 (m, 4H), 7.72 (d, J=1.5 Hz, 1H), 7.35-7.60 (m, 8H), 7.23 (d, J=1.5 Hz, 1H), 7.10-7.16 (m, 3H). MS (ESI) calcd for C23H17N3O4S2 463.1. Found 486.0 [M+Na]+.

Workup

  1. stirringthe reaction mixture was stirred overnight
  2. extractionAfter dilution by 200 mL of saturated NaHCO3 solution (aqueous), the reaction mixture was extracted by ethyl acetate (600 mL)
  3. dry with materialThe organic layer was dried over magnesium sulfate
  4. concentrationconcentrated
  5. customThe residue was purified by flash column chromatography (hexane:ethyl acetate 5:1)
  6. customto give a white solid

Sources & evidence

ORD record
ord-b74a64cc7b8545b2a279571ad39819f8
Source dataset
uspto-grants-2016_05
Patent number
US09334242B2

Linked notes

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