2-Nitrobenzenesulfonyl chloride → HCID 66746978, compound

HRID 1422767Notes

Reaction equation

HRID 1422767 reaction equation
C(N(CC)C(C)C)(C)C.[CH3:10][O:11][C:12]1[CH:21]=[C:20]2[C:15]([N:16]=[CH:17][C:18]([S:22][CH2:23][CH2:24][N:25]3[CH2:30][CH2:29][CH:28]([NH2:31])[CH2:27][CH2:26]3)=[N:19]2)=[CH:14][CH:13]=1.[N+:32]([C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][C:36]=1[S:41](Cl)(=[O:43])=[O:42])([O-:34])=[O:33]>ClCCl>[CH3:10][O:11][C:12]1[CH:21]=[C:20]2[C:15]([N:16]=[CH:17][C:18]([S:22][CH2:23][CH2:24][N:25]3[CH2:26][CH2:27][CH:28]([NH:31][S:41]([C:36]4[CH:37]=[CH:38][CH:39]=[CH:40][C:35]=4[N+:32]([O-:34])=[O:33])(=[O:42])=[O:43])[CH2:29][CH2:30]3)=[N:19]2)=[CH:14][CH:13]=1

Participants

5

Reactant 3

HCID 155402-Nitrobenzenesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 667465301-[2-(7-Methoxy-quinoxalin-2-ylsulfanyl)-ethyl]-piperidin-4-ylamine

Product 1

HCID 66746978HCID 66746978, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

N,N-Diisopropylethylamine (318 μL, 1.82 mmol, 2.5 eq) is added at room temperature to a stirred solution of 1-[2-(7-methoxy-quinoxalin-2-ylsulfanyl)-ethyl]-piperidin-4-ylamine (237 mg, 0.73 mmol, 1.0 eq) in dichloromethane (4 mL), followed by 2-nitro-benzenesulfonyl chloride (183 mg, 0.80 mmol, 1.1 eq). After 2 hours stirring at room temperature, the reaction mixture is extracted with dichloromethane (3×10 mL) and water (10 mL). The combined organic layers are dried over sodium sulfate, filtered and concentrated to give a residue that is purified by column chromatography (silica gel, eluent: ethyl acetate 100%) to afford N-{1-[2-(7-methoxy-quinoxalin-2-ylsulfanyl)-ethyl]-piperidin-4-yl}-2-nitro-benzenesulfonamide as a yellow waxy solid (307 mg, 82% yield).

Workup

  1. extractionthe reaction mixture is extracted with dichloromethane (3×10 mL) and water (10 mL)
  2. dry with materialThe combined organic layers are dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customto give a residue that
  6. customis purified by column chromatography (silica gel, eluent: ethyl acetate 100%)

Sources & evidence

ORD record
ord-80bb08d263a04340b8d4319b1501d160
Source dataset
uspto-grants-2015_01
Patent number
US08927542B2

Reaction notes

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