Dimethylformamide → 5-Dimethylamino-N,N-dimethyl-2-nitro-benzenesulfonamide

HRID 1687428Notes

Reaction equation

Cl[C:2]1[CH:3]=[CH:4][C:5]([N+:14]([O-:16])=[O:15])=[C:6]([S:8]([N:11]([CH3:13])[CH3:12])(=[O:10])=[O:9])[CH:7]=1.C(=O)([O-])[O-].[K+].[K+].[CH3:23][N:24](C)[CH:25]=O.Cl.CNC>O>[CH3:23][N:24]([CH3:25])[C:2]1[CH:3]=[CH:4][C:5]([N+:14]([O-:16])=[O:15])=[C:6]([S:8]([N:11]([CH3:13])[CH3:12])(=[O:10])=[O:9])[CH:7]=1

Participants

Conditions

Temperature: 50 °C

Procedure

To a suspension of 5-Chloro-N,N-dimethyl-2-nitro-benzenesulfonamide (1.8 g, 0.0068 mol) and Potassium carbonate (3.3 g, 0.024 mol) in N,N-Dimethylformamide (20 mL, 0.2 mol) was added Dimethylamine hydrochloride (0.83 g, 0.010 mol). The suspension was heated at 50° C. The mixture was cooled to room temperature and poured into water. The precipitate was filtered and rinsed with water then hexane. The recovered material was purified by silica gel chromatography using 0%→20% Methanol:Dichloromethane solvent gradient. 5-Dimethylamino-N,N-dimethyl-2-nitro-benzenesulfonamide isolated as a yellow solid (0.55 g, 30%).

Workup

temperatureThe mixture was cooled to room temperature
filtrationThe precipitate was filtered
washrinsed with water
customThe recovered material was purified by silica gel chromatography

Sources & evidence

ORD record: ord-183c181444e1408db5dbd4de7cd12ab0
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08148391B2

Reaction notes

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