Dimethylformamide → (R)-4-fluoro-N-(4-(3-hydroxy-2-oxopyrrolidin-1-yl)phenylsulfonyl)-N-(thiazol-2-yl)benzenesulfonamide

HRID 420792Notes

Reaction equation

HRID 420792 reaction equation
[OH:1][C@@H:2]1[CH2:6][CH2:5][N:4]([C:7]2[CH:12]=[CH:11][C:10]([S:13]([NH:16][C:17]3[S:18][CH:19]=[CH:20][N:21]=3)(=[O:15])=[O:14])=[CH:9][CH:8]=2)[C:3]1=[O:22].CN(C=O)C.C(N(C(C)C)CC)(C)C.[F:37][C:38]1[CH:43]=[CH:42][C:41]([S:44](Cl)(=[O:46])=[O:45])=[CH:40][CH:39]=1>CO>[F:37][C:38]1[CH:43]=[CH:42][C:41]([S:44]([N:16]([S:13]([C:10]2[CH:11]=[CH:12][C:7]([N:4]3[CH2:5][CH2:6][C@@H:2]([OH:1])[C:3]3=[O:22])=[CH:8][CH:9]=2)(=[O:14])=[O:15])[C:17]2[S:18][CH:19]=[CH:20][N:21]=2)(=[O:46])=[O:45])=[CH:40][CH:39]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 95884-Fluorobenzenesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 59466118(R)-4-(3-hydroxy-2-oxopyrrolidin-1-yl)-N-(thiazol-2-yl)benzenesulfonamide

Product 1

HCID 59593431(R)-4-fluoro-N-(4-(3-hydroxy-2-oxopyrrolidin-1-yl)phenylsulfonyl)-N-(thiazol-2-yl)benzenesulfonamideYield 89%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a stirring solution of (R)-4-(3-hydroxy-2-oxopyrrolidin-1-yl)-N-(thiazol-2-yl)benzenesulfonamide (5.0 g, 14.8 mmol) and DMF (25 mL), under N2, at 5° C. (ice bath) was added diisopropylethyamine (2.5 mL, 14.8 mmol). To this solution was added 4-fluorobenzenesulfonyl chloride (2.9 g, 14.8 mmol) portionwise over 10 minutes. The solution was stirred at ambient temperature for 20 minutes. To this solution was added MeOH (75 mL). The mixture was cooled to 5° C. via an ice bath and stirred for 30 minutes. The precipitate was filtered, washed with MeOH (20 mL), and vacuum dried to give the desired sulfonamide as a white solid (6.5 g, 13.1 mmol, 89% yield). 1H-NMR (400 MHz, DMSO) δ 8.03-7.96 (m, 2H), 7.83-7.80 (m, 2H), 7.72 (d, J=5.1 Hz, 1H), 7.61 (dd, J=1.8, 7.1 Hz, 1H), 7.59 (s, 1H), 7.37 (s, 1H), 7.37 (dd, J=2.0, 15.6 Hz, 1H), 7.02 (d, J=5.1 Hz, 1H), 5.88 (d, J=5.9 Hz, 1H), 4.38-4.32 (m, 1H), 3.83-3.78 (m, 1H), 3.71 (td, J=9.5, 5.4 Hz, 1H), 2.52-2.42 (m, 1H), 1.87 (td, J=9.4, 4.1 Hz, 1H). LC/MS (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)), m/z: M+1 obs=498.3; tR=1.32 min.

Workup

  1. temperatureThe mixture was cooled to 5° C. via an ice bath
  2. stirringstirred for 30 minutes
  3. filtrationThe precipitate was filtered
  4. washwashed with MeOH (20 mL), and vacuum
  5. customdried

Sources & evidence

ORD record
ord-58bf3ac30376495cbd727c5edeb199e2
Source dataset
uspto-grants-2012_01
Patent number
US08097636B2

Reaction notes

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