Trifluoroacetic acid → HCID 25167323, compound

HRID 1177846Notes

Reaction equation

HRID 1177846 reaction equation
CCN(C(C)C)C(C)C.[C:10]1([NH:16][C:17]2[CH:25]=[CH:24][C:20]([C:21]([OH:23])=O)=[CH:19][CH:18]=2)[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.[NH2:47][CH2:48][C:49]([N:51]1[CH2:56][CH2:55][N:54]([C:57](=[O:68])[C:58]2[CH:63]=[CH:62][CH:61]=[CH:60][C:59]=2[C:64]([F:67])([F:66])[F:65])[CH2:53][CH2:52]1)=[O:50].C(O)(C(F)(F)F)=O>CN(C=O)C.CCCCCC.O>[O:50]=[C:49]([N:51]1[CH2:52][CH2:53][N:54]([C:57](=[O:68])[C:58]2[CH:63]=[CH:62][CH:61]=[CH:60][C:59]=2[C:64]([F:67])([F:66])[F:65])[CH2:55][CH2:56]1)[CH2:48][NH:47][C:21](=[O:23])[C:20]1[CH:19]=[CH:18][C:17]([NH:16][C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=2)=[CH:25][CH:24]=1

Participants

10

Reactant 6

HCID 6422Trifluoroacetic acidHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 2923314-(Phenylamino)benzoic acidHCID 595596292-Amino-1-[4-(2-trifluoromethyl-benzoyl)-piperazin-1-yl]-ethanone

Product 1

HCID 25167323HCID 25167323, compoundYield 47%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8058HexaneSolvent

Procedure

DIPEA (0.096 mL, 0.56 mmol) was added drop wise to 4-phenylamino-benzoic acid (47 mg, 0.22 mmol) in DMF (4 mL). EDCI (53 mg, 0.28 mmol) and HOBT (30 mg, 0.22 mmol) were added consecutively and, after 10 mins, 2-amino-1-[4-(2-trifluoromethyl-benzoyl)-piperazin-1-yl]-ethanone in its TFA salt form (80 mg, 0.19 mmol) was added. The resulting mixture was stirred at room temperature overnight. Water was then added the resulting solid filtered to afford 68 mg of crude product. Purification by column chromatography (using silica gel of mesh size of 60-120 and 80/20 EtOAc:Hexane as the eluent) afforded 45 mg (47% yield) of N-{2-Oxo-2-[4-(2-trifluoromethyl-benzoyl)-piperazin-1-yl]-ethyl}-4-phenylamino-benzamide. LC-MS purity: 96.8%. 1H-NMR (DMSO-D6): δ 8.6 (s, 1H), 8.3 (t, 1H), 7.8 (m, 5H), 7.6 (d, 1H), 7.3 (t, 2H), 7.2 (d, 2H), 7.1 (d, 2H), 6.9 (t, 1H), 4.1 (d, 2H), 3.6 (m, 4H), 3.4 (m, 2H), 3.1 (m, 2H).

Workup

  1. filtrationfiltered
  2. customto afford 68 mg of crude product
  3. customPurification by column chromatography (

Sources & evidence

ORD record
ord-c1ff4a4b284f4de3b882de5475cefbd7
Source dataset
uspto-grants-2010_11
Patent number
US07842696B2

Reaction notes

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