Water → (S)-benzyl 4-(3-(2-fluoro-4-(methylsulfonyl)phenylamino)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate

HRID 407877Notes

Reaction equation

HRID 407877 reaction equation
[NH2:1][C@H:2]1[CH2:6][CH2:5][N:4]([CH:7]2[CH2:12][CH2:11][N:10]([C:13]([O:15][CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[O:14])[CH2:9][CH2:8]2)[C:3]1=[O:23].F[C:25]1[CH:30]=[CH:29][C:28]([S:31]([CH3:34])(=[O:33])=[O:32])=[CH:27][C:26]=1[F:35].C([O-])([O-])=O.[Na+].[Na+].O>CS(C)=O>[F:35][C:26]1[CH:27]=[C:28]([S:31]([CH3:34])(=[O:33])=[O:32])[CH:29]=[CH:30][C:25]=1[NH:1][C@H:2]1[CH2:6][CH2:5][N:4]([CH:7]2[CH2:12][CH2:11][N:10]([C:13]([O:15][CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[O:14])[CH2:9][CH2:8]2)[C:3]1=[O:23]

Participants

6

Reactant 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 27827431,2-Difluoro-4-(methylsulfonyl)benzeneHCID 86688074(S)-benzyl 4-(3-amino-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate

Product 1

HCID 86688076(S)-benzyl 4-(3-(2-fluoro-4-(methylsulfonyl)phenylamino)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylateYield 42.9%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

A solution of (S)-benzyl 4-(3-amino-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (2.0 g, 6.3 mmol), 1,2-difluoro-4-(methylsulfonyl)benzene (1.2 g, 6.3 mmol), and Na2CO3 (3.3 g, 32 mmol) in DMSO (20 mL) was stirred at 120° C. for 48 hours. The reaction mixture was poured into water (200 mL) and extracted with EtOAc (3×100 mL). The combined organic layers were washed with brine and dried over MgSO4, filtered then concentrated in vacuo. The material was purified over silica gel (100% EtOAc) to yield (S)-benzyl 4-(3-(2-fluoro-4-(methylsulfonyl)phenylamino)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (1.3 g, 2.7 mmol, 42%).

Workup

  1. extractionextracted with EtOAc (3×100 mL)
  2. washThe combined organic layers were washed with brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationthen concentrated in vacuo
  6. customThe material was purified over silica gel (100% EtOAc)

Sources & evidence

ORD record
ord-a1808b7640e6463cad1941dc40c7db16
Source dataset
uspto-grants-2014_06
Patent number
US08754226B2

Reaction notes

Loading…