Methanol → 1-(3-Amino-1H-indazol-5-yl)-3-(4-methyl-pyridin-3-yl)-imidazolidin-2-one

HRID 2383834Notes

Reaction equation

HRID 2383834 reaction equation
O.[NH2:2][NH2:3].F[C:5]1[CH:12]=[CH:11][C:10]([N:13]2[CH2:17][CH2:16][N:15]([C:18]3[CH:19]=[N:20][CH:21]=[CH:22][C:23]=3[CH3:24])[C:14]2=[O:25])=[CH:9][C:6]=1[C:7]#[N:8].CO>C(Cl)(Cl)Cl>[NH2:8][C:7]1[C:6]2[C:5](=[CH:12][CH:11]=[C:10]([N:13]3[CH2:17][CH2:16][N:15]([C:18]4[CH:19]=[N:20][CH:21]=[CH:22][C:23]=4[CH3:24])[C:14]3=[O:25])[CH:9]=2)[NH:3][N:2]=1

Participants

5

Reactant 3

HCID 887MethanolHCID 24654Hydrazine hydrate (1:1)HCID 498723502-Fluoro-5-[3-(4-methyl-pyridin-3-yl)-2-oxo-imidazolidin-1-yl]-benzonitrile

Product 1

HCID 498722531-(3-Amino-1H-indazol-5-yl)-3-(4-methyl-pyridin-3-yl)-imidazolidin-2-oneYield 45.3%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Conditions

Temperature
170 °C

Procedure

Hydrazine hydrate (5 mL) was added to solution of 2-fluoro-5-[3-(4-methyl-pyridin-3-yl)-2-oxo-imidazolidin-1-yl]-benzonitrile (103A: 265 mg) in 2-methoxymethanol (5 mL). The resulting mixture was heated to 170° C. and maintained for 20 hours. The reaction was monitored by TLC (20% MeOH in CHCl3). The reaction mixture was partitioned between ice water and DCM. The organic layer was dried over Na2SO4 and concentrated. Purification by column chromatography on silica gel (10% MeOH in CHCl3) afforded 125 mg of the product (45.3% yield).

Workup

  1. temperaturemaintained for 20 hours
  2. customThe reaction mixture was partitioned between ice water and DCM
  3. dry with materialThe organic layer was dried over Na2SO4
  4. concentrationconcentrated
  5. customPurification by column chromatography on silica gel (10% MeOH in CHCl3)

Sources & evidence

ORD record
ord-a16f72439cd9439692db891e9eb3af47
Source dataset
uspto-grants-2012_09
Patent number
US08263635B2

Reaction notes

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