Methylhydrazine → HCID 178473786, compound

HRID 1722139Notes

Reaction equation

HRID 1722139 reaction equation
[Br:1][C:2]1[CH:18]=[CH:17][C:5]([C:6]([CH:8]2[CH2:13][CH2:12][N:11]([C:14](=[O:16])[CH3:15])[CH2:10][CH2:9]2)=O)=[C:4](F)[CH:3]=1.C[NH:21][NH2:22]>C(O)CCC>[C:14]([N:11]1[CH2:12][CH2:13][CH:8]([C:6]2[C:5]3[C:4](=[CH:3][C:2]([Br:1])=[CH:18][CH:17]=3)[NH:22][N:21]=2)[CH2:9][CH2:10]1)(=[O:16])[CH3:15]

Participants

4

Reactant 2

HCID 6061MethylhydrazineHCID 14032496HCID 14032496, compound

Product 1

HCID 178473786HCID 178473786, compound

Reagents, catalysts & solvents 1

HCID 2631-ButanolSolvent

Procedure

A solution of 3.3 g of 4-(4-bromo-2-fluorobenzoyl)-1-acetylpiperidine, 1.1 g (0.013 mole) of methylhydrazine and 30 ml of n-butanol was heated under reflux for 16 hrs. The reaction mixture was concentrated in vacuo and the residue was diluted with water. The aqueous suspension was made basic with ammonium hydroxide solution and extracted with dichloromethane. The extract was washed with water, dried over anhydrous potassium carbonate and the solvent was concentrated to give 3-(1-acetyl-4-piperidinyl)-6-bromo-1H-indazole, as an oil.

Workup

  1. temperatureunder reflux for 16 hrs
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. additionthe residue was diluted with water
  4. extractionextracted with dichloromethane
  5. washThe extract was washed with water
  6. dry with materialdried over anhydrous potassium carbonate
  7. concentrationthe solvent was concentrated

Sources & evidence

ORD record
ord-c857c25914c04b479ac2a5700ee0dfc8
Source dataset
uspto-grants-1989_08
Patent number
US04853470

Reaction notes

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