2-Pyrrolidone → 3-(3-pyrrolidine-2-one-1-ylmethylphenyl)-5-iso-butyl-N-tert-butylthiophene-2-sulfonamide

HRID 562554Notes

Reaction equation

HRID 562554 reaction equation
[NH:1]1[CH2:5][CH2:4][CH2:3][C:2]1=[O:6].CC([O-])(C)C.[K+].Br[CH2:14][C:15]1[CH:16]=[C:17]([C:21]2[CH:25]=[C:24]([CH2:26][CH:27]([CH3:29])[CH3:28])[S:23][C:22]=2[S:30]([NH:33][C:34]([CH3:37])([CH3:36])[CH3:35])(=[O:32])=[O:31])[CH:18]=[CH:19][CH:20]=1>CS(C)=O.C(Cl)Cl>[N:1]1([CH2:14][C:15]2[CH:16]=[C:17]([C:21]3[CH:25]=[C:24]([CH2:26][CH:27]([CH3:29])[CH3:28])[S:23][C:22]=3[S:30]([NH:33][C:34]([CH3:36])([CH3:35])[CH3:37])(=[O:31])=[O:32])[CH:18]=[CH:19][CH:20]=2)[CH2:5][CH2:4][CH2:3][C:2]1=[O:6]

Participants

6

Reactant 3

HCID 120252-PyrrolidoneHCID 23665647Potassium tert-butoxideHCID 670039813-(3-Bromomethylphenyl)-5-iso-butyl-N-tert-butylthiophene-2-sulfonamide

Product 1

HCID 670049583-(3-pyrrolidine-2-one-1-ylmethylphenyl)-5-iso-butyl-N-tert-butylthiophene-2-sulfonamideYield 77%

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolvent2×HCID 6344DichloromethaneSolvent

Procedure

To a solution of 2-pyrrolidinone (26.5 mg, 0.312 mmol) in DMSO (1 mL) and t-BuOK (48.9 mg, 0.436 mmol), that had been stirred for 40 min at ambient temperature, was added a solution of 3-(3-bromomethylphenyl)-5-iso-butyl-N-tert-butylthiophene-2-sulfonamide (92.3 mg, 0.208 mmol; see Example 1(e)) in DMSO (1 mL) dropwise. The reaction mixture was stirred for 1 h at ambient temperature and then diluted with CH2Cl2 (15 mL). The organic layer was washed with water, dried (over anhydrous MgSO4), concentrated in vacuo, and the residue purified by flash chromatography using MeOH:CH2Cl2 (2:98) as eluent to give the sub-title compound in 77% yield as a colourless syrup (72.3 mg, 0.161 mmol).

Workup

  1. washThe organic layer was washed with water
  2. dry with materialdried (over anhydrous MgSO4)
  3. concentrationconcentrated in vacuo
  4. customthe residue purified by flash chromatography

Sources & evidence

ORD record
ord-1c3bf569944944388d5fbd0f71aa13b3
Source dataset
uspto-grants-2011_11
Patent number
US08067418B2

Reaction notes

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