Trifluoroacetic acid → N-(2-amino-4-fluorophenyl)-4-[N-cinnamoylaminomethyl]benzamide

HRID 1295793Notes

Reaction equation

HRID 1295793 reaction equation
[C:1]([NH:11][CH2:12][C:13]1[CH:21]=[CH:20][C:16]([C:17]([OH:19])=O)=[CH:15][CH:14]=1)(=[O:10])[CH:2]=[CH:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.[F:22][C:23]1[CH:28]=[CH:27][C:26]([NH2:29])=[C:25]([NH2:30])[CH:24]=1.FC(F)(F)C(O)=O>>[NH2:30][C:25]1[CH:24]=[C:23]([F:22])[CH:28]=[CH:27][C:26]=1[NH:29][C:17](=[O:19])[C:16]1[CH:15]=[CH:14][C:13]([CH2:12][NH:11][C:1](=[O:10])[CH:2]=[CH:3][C:4]2[CH:5]=[CH:6][CH:7]=[CH:8][CH:9]=2)=[CH:21][CH:20]=1

Participants

4

Reactant 3

HCID 6422Trifluoroacetic acidHCID 1645844-Fluorobenzene-1,2-diamineHCID 54481087N-(4-Carboxybenzyl)cinnamamide

Product 1

HCID 69057886N-(2-amino-4-fluorophenyl)-4-[N-cinnamoylaminomethyl]benzamideYield 64.9%

Conditions

Temperature
45 °C

Procedure

To a suspension of 0.29 g (1.78 mmol) of N,N′-carbonyldiimidazole in tetrahydrofunan (15 ml) is added 0.50 g (1.78 mmol) of 4-[N-cinnamoylaminomethyl]benzoic acid, followed by stirring at 45° C. for 1 hour. After cooling, the reaction mixture is added to a separately prepared tetrahydrofunan (10 ml) solution including 0.28 g (2.22 mmol) of 4-fluoro-1,2-phenylenediamine and 0.20 g (1.78 mmol) of trifluoroacetic acid at room temperature. After reaction at room temperature for 16 hours, the deposited white solid is collected by filtration, washed with tetrahydrofunan, and then dried to give the title compound (0.45 g, 64%). 1H NMR (300 MHz, DMSO-d6): δppm: 4.42 (2H, d), 4.92 (2H, br.s), 6.62 (1H, t), 6.78 (2H, m), 7.01 (1H, t), 7.32 (5H, m), 7.54 (5H, m), 8.76 (1H, br.t), 9.58 (1H, br.s). IR (KBr) cm−1: 3306, 1618, 1517, 1308, 745. HRMS calcd for C23H20N3O2F: 389.4292. Found: 389.4294. MA calcd for C23H20N3O2F: C, 70.94%; H, 5.18%; N, 10.79%. Found: C, 70.72%; H, 5.18%; N, 10.88%.

Workup

  1. temperatureAfter cooling
  2. customat room temperature
  3. customAfter reaction at room temperature for 16 hours
  4. filtrationthe deposited white solid is collected by filtration
  5. washwashed with tetrahydrofunan
  6. customdried

Sources & evidence

ORD record
ord-d0246cddfdc24cc1832e1c6ccd08dc33
Source dataset
uspto-grants-2007_07
Patent number
US07244751B2

Reaction notes

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