1,2-Dichloroethane → HCID 178452120, compound

HRID 20326

Reaction equation

HRID 20326 reaction equation
[Cl:1][C:2]1[CH:18]=[CH:17][CH:16]=[C:15]([Cl:19])[C:3]=1[C:4]([NH:6][C:7]1[C:8]([C:12]([OH:14])=O)=[N:9][NH:10][CH:11]=1)=[O:5].[NH2:20][CH:21]1[CH2:26][CH2:25][N:24]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:23][CH2:22]1.C(Cl)CCl.C1C=CC2N(O)N=NC=2C=1>CN(C=O)C>[C:30]([O:29][C:27]([N:24]1[CH2:25][CH2:26][CH:21]([NH:20][C:12]([C:8]2[C:7]([NH:6][C:4](=[O:5])[C:3]3[C:15]([Cl:19])=[CH:16][CH:17]=[CH:18][C:2]=3[Cl:1])=[CH:11][NH:10][N:9]=2)=[O:14])[CH2:22][CH2:23]1)=[O:28])([CH3:33])([CH3:31])[CH3:32]

Participants

6

Reactant 4

HCID 111,2-DichloroethaneHCID 757711-HydroxybenzotriazoleHCID 12682914-Amino-1-Boc-piperidineHCID 178524952HCID 178524952, compound

Product 1

HCID 178452120HCID 178452120, compoundYield 51.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid (6.5 g, 21.6 mmol), 4-amino-1-BOC-piperidine (4.76 g, 23.8 mmol), EDC (5.0 g, 25.9 mmol) and HOBt (3.5 g, 25.9 mmol) in DMF (75 ml) was stirred at room temperature for 20 hours. The reaction mixture was reduced in vacuo and the residue partitioned between ethyl acetate (100 ml) and saturated aqueous sodium bicarbonate solution (100 ml). The organic layer was washed with brine, dried (MgSO4) and reduced in vacuo. The residue was taken up in 5% MeOH-DCM (˜30 ml). The insoluble material was collected by filtration and, washed with DCM and dried in vacuo to give 4-{[4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carbonyl]-amino}-piperidine-1-carboxylic acid tert-butyl ester (5.38 g) as a white solid. The filtrate was reduced in vacuo and the residue purified by column chromatography using gradient elution 1:2 EtOAc/hexane to EtOAc to give further 4-{[4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carbonyl]-amino}-piperidine-1-carboxylic acid tert-butyl ester (2.54 g) as a white solid.

Workup

  1. customthe residue partitioned between ethyl acetate (100 ml) and saturated aqueous sodium bicarbonate solution (100 ml)
  2. washThe organic layer was washed with brine
  3. dry with materialdried (MgSO4)
  4. filtrationThe insoluble material was collected by filtration
  5. washwashed with DCM
  6. customdried in vacuo

Sources & evidence

ORD record
ord-e33947abd5724166b12094c87e39e57e
Source dataset
uspto-grants-2010_06
Patent number
US07745638B2

Linked notes

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