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 587249Notes

Reaction equation

HRID 587249 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 water 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 water and brine
  6. dry with materialdried over anhydrous Na2SO4
  7. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-aa7bddda84284473b4e7ac19127444fe
Source dataset
uspto-grants-2016_01
Patent number
US09226500B2

Reaction notes

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