1,2-Dichloroethane → 3-Benzyloxy-N-(4-fluorobenzyl)-5-methyl-4-oxo-7-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxamide

HRID 1453828Notes

Reaction equation

HRID 1453828 reaction equation
[CH2:1]([O:8][C:9]1[C:10]([C:26]([OH:28])=O)=[N:11][N:12]2[CH:17]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[CH2:16][N:15]([CH3:24])[C:14](=[O:25])[C:13]=12)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1C=CC2N(O)N=NC=2C=1.C(Cl)CCl.CCN(CC)CC.[F:50][C:51]1[CH:58]=[CH:57][C:54]([CH2:55][NH2:56])=[CH:53][CH:52]=1>CN(C=O)C>[CH2:1]([O:8][C:9]1[C:10]([C:26]([NH:56][CH2:55][C:54]2[CH:57]=[CH:58][C:51]([F:50])=[CH:52][CH:53]=2)=[O:28])=[N:11][N:12]2[CH:17]([C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=3)[CH2:16][N:15]([CH3:24])[C:14](=[O:25])[C:13]=12)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

7

Reactant 5

HCID 111,2-DichloroethaneHCID 8471TriethylamineHCID 673264-FluorobenzylamineHCID 757711-HydroxybenzotriazoleHCID 580097413-Benzyloxy-5-methyl-4-oxo-7-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylic acid

Product 1

HCID 689517403-Benzyloxy-N-(4-fluorobenzyl)-5-methyl-4-oxo-7-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxamide

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-benzyloxy-5-methyl-4-oxo-7-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylic acid (20 mg, 0.053 mmol) in anhydrous DMF were added HOBT (11 mg, 0.079 mmol), EDC (15 mg, 0.079 mmol), Et3N (7 μL, 0.053 mmol), and 4-fluorobenzylamine (7 μL, 0.064 mmol). The reaction mixture was stirred at room temperature for 1 hour. Purification was achieved by reverse phase chromatography on a C-18 column using a gradient elution of 95-5% H2O (0.1% TFA)/CH3CN (0.1% TFA). Collection and concentration of the appropriate fractions yielded the title product as a white solid. ES MS (M+1)=485.

Workup

  1. customPurification
  2. washa gradient elution of 95-5% H2O (0.1% TFA)/CH3CN (0.1% TFA)
  3. customCollection and concentration of the appropriate fractions

Sources & evidence

ORD record
ord-be65039e898a4400a0fe6338ef8d8b5b
Source dataset
uspto-grants-2009_01
Patent number
US07476666B2

Reaction notes

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