Cesium carbonate → HCID 20775758, compound

HRID 2193908Notes

Reaction equation

HRID 2193908 reaction equation
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)=[CH:8][C:9]=1[NH:10][S:11]([C:14]1[CH:19]=[C:18]([CH3:20])[C:17]([Cl:21])=[CH:16][C:15]=1[CH3:22])(=[O:13])=[O:12])=[O:4].[I:29][C:30]1[CH:31]=[C:32]([CH:35]=[CH:36][CH:37]=1)[CH2:33]Br.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)=[CH:8][C:9]=1[N:10]([S:11]([C:14]1[CH:19]=[C:18]([CH3:20])[C:17]([Cl:21])=[CH:16][C:15]=1[CH3:22])(=[O:13])=[O:12])[CH2:33][C:32]1[CH:35]=[CH:36][CH:37]=[C:30]([I:29])[CH:31]=1)=[O:4]

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 503518HCID 503518, compoundHCID 27593613-Iodobenzyl bromide

Product 1

HCID 20775758HCID 20775758, compoundYield 87.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-(4-Chloro-2,5-dimethyl-benzenesulfonylamino)-5-phenyl-thiophene-2-carboxylic acid methyl ester (100 mg, 0.229 mmol) in anhydrous DMF (6 mL), 3-iodobenzyl bromide (82 mg, 0.276 mmol) and cesium carbonate (88 mg, 0.276 mmol) were added and the reaction mixture was stirred at room temperature under a N2 atmosphere for 12 h. The reaction mixture was partitioned, between water and ether. The ether layer was separated, dried (Na2SO4), concentrated. The residue, was purified by silica gel column chromatography using ethyl acetate and hexane (1:3) as eluent to obtain 3-[(4-Chloro-2,5-dimethyl-benzenesulfonyl)-(3-iodo-benzyl)-amino]-5-phenyl-thiophene-2-carboxylic acid methyl ester (130 mg, 87%) as a syrup.

Workup

  1. customThe reaction mixture was partitioned, between water and ether
  2. customThe ether layer was separated
  3. dry with materialdried (Na2SO4)
  4. concentrationconcentrated
  5. customThe residue, was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-6e26f494985240a3a9d48a3d3fa22872
Source dataset
uspto-grants-2012_12
Patent number
US08329924B2

Reaction notes

Loading…