Hydrazine hydrate (1:1) → (E)-(3-chloro-5-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)pyridin-2-yl)methanamine

HRID 1502726Notes

Reaction equation

HRID 1502726 reaction equation
[Cl:1][C:2]1[C:3]([CH2:24][N:25]2C(=O)C3C(=CC=CC=3)C2=O)=[N:4][CH:5]=[C:6](/[CH:8]=[CH:9]/[CH:10]([C:15]2[CH:20]=[C:19]([Cl:21])[C:18]([Cl:22])=[C:17]([Cl:23])[CH:16]=2)[C:11]([F:14])([F:13])[F:12])[CH:7]=1.O.NN>CCO>[Cl:1][C:2]1[C:3]([CH2:24][NH2:25])=[N:4][CH:5]=[C:6](/[CH:8]=[CH:9]/[CH:10]([C:15]2[CH:20]=[C:19]([Cl:21])[C:18]([Cl:22])=[C:17]([Cl:23])[CH:16]=2)[C:11]([F:14])([F:12])[F:13])[CH:7]=1

Participants

4

Reactant 2

HCID 24654Hydrazine hydrate (1:1)HCID 86675185(E)-2-((3-chloro-5-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)pyridin-2-yl)methyl)isoindoline-1,3-dione

Product 1

HCID 86675186(E)-(3-chloro-5-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)pyridin-2-yl)methanamineYield 64.9%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a stirred solution of (E)-2-((3-chloro-5-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)pyridin-2-yl)methyl)isoindoline-1,3-dione (200 mg, 0.358 mmol) in EtOH (5 mL) was added hydrazine hydrate (89.6 mg, 1.79 mmol), and the reaction mixture was heated at reflux for 2 h. The reaction mixture was concentrated under reduced pressure, and the residue was dissolved in CH2Cl2. The organic layer was washed with H2O and brine, dried over anhydrous Na2SO4, and concentrated under reduced pressure to afford the title compound as a solid (100 mg). The product obtained in this reaction was carried on to the next step without further purification.

Workup

  1. temperaturethe reaction mixture was heated
  2. temperatureat reflux for 2 h
  3. concentrationThe reaction mixture was concentrated under reduced pressure
  4. dissolutionthe residue was dissolved in CH2Cl2
  5. washThe organic layer was washed with H2O and brine
  6. dry with materialdried over anhydrous Na2SO4
  7. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-a2bbb86319ab412eb757a54ea8ba0c5c
Source dataset
uspto-grants-2015_12
Patent number
US09210927B2

Reaction notes

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