Hydrazine hydrate (1:1) → 6-[({[(1,2-dimethyl-1H-imidazol-5-yl)(phenyl)methylene]amino}oxy)methyl]pyridin-2-amine

HRID 875218Notes

Reaction equation

HRID 875218 reaction equation
[CH3:1][N:2]1[C:6]([C:7](=[N:14][O:15][CH2:16][C:17]2[N:22]=[C:21]([N:23]3C(=O)C4C(=CC=CC=4)C3=O)[CH:20]=[CH:19][CH:18]=2)[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[CH:5][N:4]=[C:3]1[CH3:34].O.NN>O1CCCC1>[CH3:1][N:2]1[C:6]([C:7](=[N:14][O:15][CH2:16][C:17]2[N:22]=[C:21]([NH2:23])[CH:20]=[CH:19][CH:18]=2)[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)=[CH:5][N:4]=[C:3]1[CH3:34]

Participants

4

Reactant 2

HCID 24654Hydrazine hydrate (1:1)HCID 866507522-{6-[({[(1,2-dimethyl-1H-imidazol-5-yl)(phenyl)methylene]amino}-oxy)methyl]pyridin-2-yl}-1H-isoindole-1,3(2H)-dione

Product 1

HCID 866507536-[({[(1,2-dimethyl-1H-imidazol-5-yl)(phenyl)methylene]amino}oxy)methyl]pyridin-2-amineYield 50.9%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-{6-[({[(1,2-dimethyl-1H-imidazol-5-yl)(phenyl)methylene]amino}-oxy)methyl]pyridin-2-yl}-1H-isoindole-1,3(2H)-dione (1.02 g, 2.26 mmol) in tetrahydrofuran (30 mL) was added dropwise hydrazine hydrate (0.55 mL, 11.3 mmol). After stirring at room temperature for 28 h, the reaction mixture was filtered, the insolubles washed with ethyl acetate, and the filtrate concentrated in vacuo. Purification on silica gel afforded 6-[({[(1,2-dimethyl-1H-imidazol-5-yl)(phenyl)methylene]amino}oxy)methyl]pyridin-2-amine [370 mg, yield 43%; HPLC/MS: m/z=322 (M+H); log P(HCOOH)=0.39].

Workup

  1. filtrationthe reaction mixture was filtered
  2. washthe insolubles washed with ethyl acetate
  3. concentrationthe filtrate concentrated in vacuo
  4. customPurification on silica gel

Sources & evidence

ORD record
ord-7517e2328eaf43168d28e1607d083b5c
Source dataset
uspto-grants-2015_03
Patent number
US08981111B2

Reaction notes

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