Piperazin-2-one → 4-[5-[3-Bromo-5-(trifluoromethoxy)phenyl]-1-(3-pyridyl)pyrazole-3-carbonyl]piperazin-2-one

HRID 930062Notes

Reaction equation

HRID 930062 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([C:13]2[N:17]([C:18]3[CH:19]=[N:20][CH:21]=[CH:22][CH:23]=3)[N:16]=[C:15]([C:24]([OH:26])=O)[CH:14]=2)[CH:5]=[C:6]([O:8][C:9]([F:12])([F:11])[F:10])[CH:7]=1.ClC1C=C(C2N(C3C=NC=CC=3)N=C(C([N:48]3[CH2:53][CH2:52][NH:51][C:50](=[O:54])[CH2:49]3)=O)C=2)C=C(F)C=1.O=C1CNCCN1>>[Br:1][C:2]1[CH:3]=[C:4]([C:13]2[N:17]([C:18]3[CH:19]=[N:20][CH:21]=[CH:22][CH:23]=3)[N:16]=[C:15]([C:24]([N:48]3[CH2:53][CH2:52][NH:51][C:50](=[O:54])[CH2:49]3)=[O:26])[CH:14]=2)[CH:5]=[C:6]([O:8][C:9]([F:11])([F:10])[F:12])[CH:7]=1

Participants

4

Reactant 3

HCID 231360Piperazin-2-oneHCID 715765334-[5-(3-Chloro-5-fluoro-phenyl)-1-(3-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 89602527HCID 89602527, compound

Product 1

HCID 865744764-[5-[3-Bromo-5-(trifluoromethoxy)phenyl]-1-(3-pyridyl)pyrazole-3-carbonyl]piperazin-2-one

Procedure

75 mg (0.16 mmol) of the compound of Example 39A is reacted analogously to the synthesis of the compound of Example 4 with 17 mg (0.17 mmol) of 2-oxopiperazine. 21 mg (25% of theory) of the title compound is obtained as a fine precipitate as well as 37 mg (46% of theory) of the title compound after the filtrate is purified by means of preparative HPLC (mobile solvent: acetonitrile/water gradient).

Sources & evidence

ORD record
ord-efea94b785bb4778ac1eff0d9932f40a
Source dataset
uspto-grants-2016_03
Patent number
US09296720B2

Reaction notes

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