1-Hydroxybenzotriazole → 5-(2-Benzyloxy-phenyl)-isoxazole-3-carboxylic acid {2-[4-(2-chloro-phenoxy)-piperidin-1-yl]-2-oxo-ethyl}-amide

HRID 1093645Notes

Reaction equation

HRID 1093645 reaction equation
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[C:15]1[O:19][N:18]=[C:17]([C:20]([NH:22][CH2:23][C:24]([OH:26])=O)=[O:21])[CH:16]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CCN(C(C)C)C(C)C.C1C=CC2N(O)N=NC=2C=1.CCN=C=NCCCN(C)C.Cl.Cl.[Cl:59][C:60]1[CH:72]=[CH:71][CH:70]=[CH:69][C:61]=1[O:62][CH:63]1[CH2:68][CH2:67][NH:66][CH2:65][CH2:64]1>CN(C=O)C.O>[Cl:59][C:60]1[CH:72]=[CH:71][CH:70]=[CH:69][C:61]=1[O:62][CH:63]1[CH2:68][CH2:67][N:66]([C:24](=[O:26])[CH2:23][NH:22][C:20]([C:17]2[CH:16]=[C:15]([C:10]3[CH:11]=[CH:12][CH:13]=[CH:14][C:9]=3[O:8][CH2:1][C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[O:19][N:18]=2)=[O:21])[CH2:65][CH2:64]1

Participants

8

Reactant 5

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 167325894-(2-Chlorophenoxy)piperidine hydrochlorideHCID 57874519HCID 57874519, compound

Product 1

HCID 578744145-(2-Benzyloxy-phenyl)-isoxazole-3-carboxylic acid {2-[4-(2-chloro-phenoxy)-piperidin-1-yl]-2-oxo-ethyl}-amideYield 73%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of {[5-(2-benzyloxy-phenyl)-isoxazole-3-carbonyl]-amino}-acetic acid (0.15 g, 0.00039 mol) in DMF (2 mL) was added DIPEA (0.224 g, 0.00174 mol), HOBt (0.065 g, 0.000482 mol) and EDCI.HCl (0.0925 g, 0.00048 mol) at ambient temperature. After 5 minutes 4-(2-chloro-phenoxy)-piperidine hydrochloride (0.1 g, 0.00041 mol) was added and the resulting mixture was stirred overnight. The reaction mixture was then diluted with cold water and the resulting precipitate was isolated by filtration. Purification by column chromatography using silica gel 230-400 mesh (70% ethyl acetate in hexane) afforded 0.153 g (73%) of 5-(2-benzyloxy-phenyl)-isoxazole-3-carboxylic acid {2-[4-(2-chloro-phenoxy)-piperidin-1-yl]-2-oxo-ethyl}-amide. LCMS: 546.17 (M+1)+, 97.6%.

Workup

  1. customthe resulting precipitate was isolated by filtration
  2. customPurification by column chromatography

Sources & evidence

ORD record
ord-0a8cdc56ec6a45688fa753a404290c26
Source dataset
uspto-grants-2012_03
Patent number
US08129376B2

Reaction notes

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