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Benzoic Acid → 2-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-[5-(2,5-dioxo-imidazolidin-4-ylidenemethyl)-pyrazin-2-yl]-propionamide

HRID 719881
Notes
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Reaction equation

HRID 719881 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]([CH2:24][CH:25]2[CH2:29][CH2:28][CH2:27][CH2:26]2)[C:13]([NH:15][C:16]2[CH:21]=[N:20][C:19]([CH:22]=O)=[CH:18][N:17]=2)=[O:14])[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:10])=[O:9].[NH:30]1[CH2:36][C:34](=[O:35])[NH:33][C:31]1=[O:32].N1CCCCC1.C(O)(=O)C1C=CC=CC=1>C(O)C>[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]([CH2:24][CH:25]2[CH2:26][CH2:27][CH2:28][CH2:29]2)[C:13]([NH:15][C:16]2[CH:21]=[N:20][C:19]([CH:22]=[C:36]3[C:34](=[O:35])[NH:33][C:31](=[O:32])[NH:30]3)=[CH:18][N:17]=2)=[O:14])[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:9])=[O:10]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 243Benzoic AcidHCID 8082PiperidineHCID 10006HydantoinHCID 218973302-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(5-formyl-pyrazin-2-yl)-propionamide

Product 1

HCID 674824182-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-[5-(2,5-dioxo-imidazolidin-4-ylidenemethyl)-pyrazin-2-yl]-propionamideYield 33%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
25 °C

Procedure

A solution of 2-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(5-formyl-pyrazin-2-yl)-propionamide (prepared as in Example 18, 217 mg, 0.5 mmol), hydantoin (75 mg, 0.75 mmol), piperidine (10 μL, 0.10 mmol), and benzoic acid (6.1 mg, 0.05 mmol) in anhydrous ethanol (30 mL) was heated under reflux for 2 d. The reaction mixture was allowed to cool to 25° C. and then was concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230–400 mesh, 10%–65% ethyl acetate/hexanes) afforded the 2-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-[5-(2,5-dioxo-imidazolidin-4-ylidenemethyl)-pyrazin-2-yl]-propionamide (84 mg, 33%) as a white solid: LC-MS m/e 518 (MH+).

Workup

  1. temperatureunder reflux for 2 d
  2. concentrationwas concentrated in vacuo

Sources & evidence

ORD record
ord-031dcd7d4b9f4c91bc25113b77c57376
Source dataset
uspto-grants-2006_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07132425B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes