Triethylamine → 5-Chloro-N-{2-ethyl-1-[1-(4-methoxybenzyl)-1H-pyrazol-5-yl]butyl}thiophene-2-sulfonamide

HRID 748039Notes

Reaction equation

HRID 748039 reaction equation
[CH2:1]([CH:3]([CH2:20][CH3:21])[CH:4]([NH2:19])[C:5]1[N:9]([CH2:10][C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[N:8]=[CH:7][CH:6]=1)[CH3:2].C(N(CC)CC)C.[Cl:29][C:30]1[S:34][C:33]([S:35](Cl)(=[O:37])=[O:36])=[CH:32][CH:31]=1>C(Cl)Cl.CCOC(C)=O>[Cl:29][C:30]1[S:34][C:33]([S:35]([NH:19][CH:4]([C:5]2[N:9]([CH2:10][C:11]3[CH:12]=[CH:13][C:14]([O:17][CH3:18])=[CH:15][CH:16]=3)[N:8]=[CH:7][CH:6]=2)[CH:3]([CH2:1][CH3:2])[CH2:20][CH3:21])(=[O:37])=[O:36])=[CH:32][CH:31]=1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 27339255-Chlorothiophene-2-sulfonyl chlorideHCID 68593849{2-ethyl-1-[1-(4-methoxybenzyl)-1H-pyrazol-5-yl]butyl}amine

Product 1

HCID 112599035-Chloro-N-{2-ethyl-1-[1-(4-methoxybenzyl)-1H-pyrazol-5-yl]butyl}thiophene-2-sulfonamideYield 51%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To {2-ethyl-1-[1-(4-methoxybenzyl)-1H-pyrazol-5-yl]butyl}amine (0.500 g, 1.74 mmol) in CH2Cl2 (15 mL) was added triethylamine (0.29 mL, 2.1 mmol) and 5-chlorothiophene-2-sulfonyl chloride (0.450 g, 2.09 mmol). After 2 days the reaction mixture was diluted with EtOAc (30 mL), washed with 1 N HCl (30 mL), dried (Na2SO4) and concentrated. Column chromatography (EtOAc/hexane, 3:7, then 1:1) provided 5-chloro-N-{2-ethyl-1-[1-(4-methoxybenzyl)-1H-pyrazol-5-yl]butyl}thiophene-2-sulfonamide (0.415 g, 51%) as an oil.

Workup

  1. washwashed with 1 N HCl (30 mL)
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-a283172ff6f347ffbe4ef04bceecd501
Source dataset
uspto-grants-2008_07
Patent number
US07399778B2

Reaction notes

Loading…