Hydrazine → HCID 15029658, compound

HRID 1607249Notes

Reaction equation

HRID 1607249 reaction equation
[CH3:1][O:2][C:3]1[CH:25]=[CH:24][C:6]([C:7]([C:9]2[O:10][C:11]3[C:18]([CH2:19][CH2:20][CH3:21])=[CH:17][C:16]([Cl:22])=[C:15]([OH:23])[C:12]=3[C:13]=2[CH3:14])=O)=[CH:5][CH:4]=1.NN.[OH-].[K+]>C(O)CO.O>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([CH2:7][C:9]2[O:10][C:11]3[C:18]([CH2:19][CH2:20][CH3:21])=[CH:17][C:16]([Cl:22])=[C:15]([OH:23])[C:12]=3[C:13]=2[CH3:14])=[CH:24][CH:25]=1

Participants

6

Reactant 3

HCID 9321HydrazineHCID 14797Potassium HydroxideHCID 15029657HCID 15029657, compound

Product 1

HCID 15029658HCID 15029658, compoundYield 54.5%

Reagents, catalysts & solvents 2

HCID 174Ethylene GlycolSolventHCID 962WaterSolvent

Procedure

A solution of 2-(p-methoxybenzoyl)-3-methyl-4-hydroxy-5-chloro-7-propylbenzofuran (90 mg; 0.25 mmole), hydrazine (80 μl) and potassium hydroxide (98 mg) in ethylene glycol (2 mL) was heated at 145° C. for a period of 5 hours. The reaction mixture was cooled, poured in water, and extracted with ether. The organic phase was washed with 20% citric acid, with brine, dried (Na2SO4), and concentrated in vacuo. The residue was chromatographed on silica gel using 20% ethylacetate in hexane as eluent to yield 47 mg (50%) of 2-(p-methoxybenzyl) 3-methyl-4hydroxy-5-chloro-7-propylbenzofuran.

Workup

  1. temperatureThe reaction mixture was cooled
  2. extractionextracted with ether
  3. washThe organic phase was washed with 20% citric acid, with brine
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated in vacuo
  6. customThe residue was chromatographed on silica gel using 20% ethylacetate in hexane as eluent

Sources & evidence

ORD record
ord-3522367c0df04593b48422c95e844689
Source dataset
uspto-grants-1989_09
Patent number
US04863958

Reaction notes

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