Diisopropylamine → 4-(1-(2,2-Difluoroethyl)piperidin-4-ylamino)-3-nitrobenzenesulfonamide

HRID 574801Notes

Reaction equation

HRID 574801 reaction equation
Cl.[N+:2]([C:5]1[CH:6]=[C:7]([S:18]([NH2:21])(=[O:20])=[O:19])[CH:8]=[CH:9][C:10]=1[NH:11][CH:12]1[CH2:17][CH2:16][NH:15][CH2:14][CH2:13]1)([O-:4])=[O:3].[F:22][CH:23]([F:26])[CH2:24]I.C(NC(C)C)(C)C>CN(C)C=O.ClCCl>[F:22][CH:23]([F:26])[CH2:24][N:15]1[CH2:16][CH2:17][CH:12]([NH:11][C:10]2[CH:9]=[CH:8][C:7]([S:18]([NH2:21])(=[O:19])=[O:20])=[CH:6][C:5]=2[N+:2]([O-:4])=[O:3])[CH2:13][CH2:14]1

Participants

6

Reactant 3

HCID 7912DiisopropylamineHCID 38335651,1-Difluoro-2-iodoethaneHCID 67170227HCID 67170227, compound

Product 1

HCID 489340074-(1-(2,2-Difluoroethyl)piperidin-4-ylamino)-3-nitrobenzenesulfonamide

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
85 °C

Procedure

3-nitro-4-(piperidin-4-ylamino)benzenesulfonamide hydrochloride (0.100 g), 1,1-difluoro-2-iodoethane (0.063 mL) and diisopropylamine (0.156 mL) were stirred together in N,N-dimethylformamide (3 ml) and heated to 85° C. The reaction was diluted with dichloromethane (50 mL) and washed with water (50 mL), brine (50 mL), dried over magnesium sulfate, filtered, and concentrated. The residue was loaded onto silica gel (GraceResolve 12 g) and eluted using a gradient of 0.5% methanol/dichloromethane to 3% methanol/dichloromethane over 30 minutes to give the title compound.

Workup

  1. washwashed with water (50 mL), brine (50 mL)
  2. dry with materialdried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. washeluted
  6. customover 30 minutes

Sources & evidence

ORD record
ord-b62b235bf038466488074e4f4de1e596
Source dataset
uspto-grants-2015_05
Patent number
US09034875B2

Reaction notes

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