1-Methylpiperazine → Benzo[b]thiophene-2-sulfonic acid {2-[2-methoxy-5-(2-pyrrolidin-1-yl-ethanesulfonyl)-benzenesulfonylamino]-phenyl}-amide

HRID 730226Notes

Reaction equation

HRID 730226 reaction equation
[CH:1]([S:3]([C:6]1[CH:7]=[CH:8][C:9]([O:35][CH3:36])=[C:10]([S:12]([NH:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=2[NH:22][S:23]([C:26]2[S:30][C:29]3[CH:31]=[CH:32][CH:33]=[CH:34][C:28]=3[CH:27]=2)(=[O:25])=[O:24])(=[O:14])=[O:13])[CH:11]=1)(=[O:5])=[O:4])=[CH2:2].C[N:38]1[CH2:43][CH2:42]N[CH2:40][CH2:39]1>C1COCC1.C(Cl)Cl>[CH3:36][O:35][C:9]1[CH:8]=[CH:7][C:6]([S:3]([CH2:1][CH2:2][N:38]2[CH2:43][CH2:42][CH2:40][CH2:39]2)(=[O:4])=[O:5])=[CH:11][C:10]=1[S:12]([NH:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1[NH:22][S:23]([C:26]1[S:30][C:29]2[CH:31]=[CH:32][CH:33]=[CH:34][C:28]=2[CH:27]=1)(=[O:25])=[O:24])(=[O:13])=[O:14]

Participants

5

Reactant 2

HCID 531671-MethylpiperazineHCID 86605045Benzo[b]thiophene-2-sulfonic acid [2-(5-ethenesulfonyl-2-methoxybenzenesulfonylamino)phenyl] amide

Product 1

HCID 11686009Benzo[b]thiophene-2-sulfonic acid {2-[2-methoxy-5-(2-pyrrolidin-1-yl-ethanesulfonyl)-benzenesulfonylamino]-phenyl}-amide

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of benzo[b]thiophene-2-sulfonic acid [2-(5-ethenesulfonyl-2-methoxybenzenesulfonylamino)phenyl] amide (0.2 mmol, prepared as in Example 19) in dry THF (2 mL) was added 0.2 mL of 1-methylpiperazine. The resulting reaction mixture was stirred at room temperature for 1 h. The reaction mixture was diluted with DCM (10 mL) and washed with saturated sodium chloride aqueous solution (25 mL). The organic phase was dried over anhydrous sodium sulfate and concentrated under vacuum. The residue obtained was purified by flash column chromatography eluting with EtOAc then DCM/methanol/AcOH (100:2:1 to 100:10:2) to furnish 118 mg of benzo[b]thiophene-2-sulfonic acid {2-[2-methoxy-5-(2-pyrrolidin-1-yl-ethanesulfonyl)-benzenesulfonylamino]-phenyl}-amide. LC: Tr 0.84 min; MS: 666.0 (M+1)+.

Workup

  1. customThe resulting reaction mixture
  2. washwashed with saturated sodium chloride aqueous solution (25 mL)
  3. dry with materialThe organic phase was dried over anhydrous sodium sulfate
  4. concentrationconcentrated under vacuum
  5. customThe residue obtained
  6. customwas purified by flash column chromatography
  7. washeluting with EtOAc

Sources & evidence

ORD record
ord-b21d592e2d87455b84ca56c88c39576d
Source dataset
uspto-grants-2009_09
Patent number
US07582673B2

Reaction notes

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