1-Hydroxybenzotriazole → (E)-N-(2-chloro-4-(3-(3,5-dichlorophenyl)-4,4,4-trifluorobut-1-en-1-yl)benzyl)acetamide

HRID 1503569Notes

Reaction equation

HRID 1503569 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6](/[CH:8]=[CH:9]/[CH:10]([C:15]2[CH:20]=[C:19]([Cl:21])[CH:18]=[C:17]([Cl:22])[CH:16]=2)[C:11]([F:14])([F:13])[F:12])[CH:5]=[CH:4][C:3]=1[CH2:23][NH2:24].C1C=CC2N([OH:34])N=NC=2C=1.CCN=C=NC[CH2:41][CH2:42]N(C)C.Cl.CCN(C(C)C)C(C)C>CN(C=O)C.O>[Cl:1][C:2]1[CH:7]=[C:6](/[CH:8]=[CH:9]/[CH:10]([C:15]2[CH:16]=[C:17]([Cl:22])[CH:18]=[C:19]([Cl:21])[CH:20]=2)[C:11]([F:13])([F:14])[F:12])[CH:5]=[CH:4][C:3]=1[CH2:23][NH:24][C:41](=[O:34])[CH3:42]

Participants

7

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 86675181(E)-(2-chloro-4-(3-(3,5-dichlorophenyl)-4,4,4-trifluorobut-1-en-1-yl)phenyl)methanamine

Product 1

HCID 86675198(E)-N-(2-chloro-4-(3-(3,5-dichlorophenyl)-4,4,4-trifluorobut-1-en-1-yl)benzyl)acetamideYield 60%

Reagents, catalysts & solvents 2

HCID 962WaterSolvent2×HCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of (E)-(2-chloro-4-(3-(3,5-dichlorophenyl)-4,4,4-trifluorobut-1-en-1-yl)phenyl)methanamine (0.3 g, 0.8 mmol) in DMF (5 mL) was added 2,2,2-trifluoropropanoic acid (97 mg, 0.76 mmol), HOBt.H2O (174 mg, 1.14 mmol) and EDC.HCl (217 mg, 1.14 mmol) and DIEA (196 mg, 1.52 mmol), and the resultant reaction mixture was stirred at ambient temperature for 18 h. The reaction mixture was diluted with H2O and extracted with EtOAc. The combined EtOAc layer was washed with brine, dried over Na2SO4, and concentrated under reduced pressure. Purification by flash column chromatography (SiO2, 100-200 mesh; ethyl acetate in hexane (30-50% afforded the title compound as an off-white solid (0.2 g, 60%): mp 127-128° C.; 1H NMR (400 MHz, CDCl3) δ 7.42 (m, 4H), 7.24 (m, 2H), 6.53 (d, J=16.0 Hz, 1H), 6.36 (dd, J=16.0, 8.0 Hz, 1H), 5.86 (br s, 1H), 4.51 (d, J=6.0 Hz, 2H), 4.05 (m, 1H), 2.02 (s, 3H); ESIMS m/z 436.03 ([M+H]+).

Workup

  1. extractionextracted with EtOAc
  2. washThe combined EtOAc layer was washed with brine
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated under reduced pressure
  5. customPurification by flash column chromatography (SiO2, 100-200 mesh

Sources & evidence

ORD record
ord-42ab6fbfc20f4cdfa2dda009c8ffd682
Source dataset
uspto-grants-2015_12
Patent number
US09212163B2

Reaction notes

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