O-Toluidine → HCID 178468311, compound

HRID 1407060Notes

Reaction equation

HRID 1407060 reaction equation
[CH3:1][C:2]1[CH:8]=[CH:7][CH:6]=[CH:5][C:3]=1[NH2:4].[N:9]([O-])=O.[Na+].C([O-])(=O)C.[Na+].[C:18]([CH2:21][C:22](=[O:24])[CH3:23])(=[O:20])[CH3:19]>C(O)(=O)C.Cl.O.C(O)C>[CH3:1][C:2]1[CH:8]=[CH:7][CH:6]=[CH:5][C:3]=1[NH:4][N:9]=[C:21]([C:22](=[O:24])[CH3:23])[C:18](=[O:20])[CH3:19]

Participants

9

Reactant 4

HCID 7242O-ToluidineHCID 31261AcetylacetoneHCID 517045Sodium AcetateHCID 23668193Sodium Nitrite

Product 1

HCID 178468311HCID 178468311, compoundYield 49.1%

Reagents, catalysts & solvents 4

HCID 176Acetic AcidSolventHCID 313Hydrochloric AcidSolventHCID 702EthanolSolventHCID 962WaterSolvent2×

Conditions

Temperature
0 °C

Procedure

To a solution of 2-methylaniline (1000 mg, 9.34 mmol) in 10 mL of acetic acid and 2 mL of concentrated hydrochloride solution, sodium nitrite (774 mg, 11.21 mmol) in 4 mL of water was added dropwise at 0° C., and the mixture was stirred at 0° C. for 1 h. Then to the reaction mixture was added dropwise a solution of sodium acetate (2299 mg, 28.04 mmol) and acetylacetone (1215 mg, 12.15 mmol) in 10 mL of ethanol and 6 mL of water. The mixture was stirred at room temperature overnight, filtered, washed with water, EtOH/H2O (1:1) and hexane, and dried to give 3-[(2-methylphenyl)hydrazono]pentane-2,4-dione (1000 mg, 49%). LCMS: m/z=219 [M++H].

Workup

  1. stirringThe mixture was stirred at room temperature overnight
  2. filtrationfiltered
  3. washwashed with water, EtOH/H2O (1:1) and hexane
  4. customdried

Sources & evidence

ORD record
ord-dba2c3ed7c3f4706b57b333f4ba4e0d2
Source dataset
uspto-grants-2014_12
Patent number
US08916566B2

Reaction notes

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