Benzoylhydrazine → HCID 136245080, compound

HRID 877597Notes

Reaction equation

HRID 877597 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([OH:8])[C:3]=1[C:9](=O)[CH3:10].[C:12]([NH:20][NH2:21])(=[O:19])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1>CO.C(O)(=O)C>[OH:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([OH:8])[C:3]=1/[C:9](=[N:21]/[NH:20][C:12](=[O:19])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)/[CH3:10]

Participants

5

Reactant 2

HCID 11955BenzoylhydrazineHCID 696872',6'-Dihydroxyacetophenone

Product 1

HCID 136245080HCID 136245080, compoundYield 56.3%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 887MethanolSolvent

Conditions

Temperature
120 °C

Procedure

1-(2,6-Dihydroxyphenyl)ethanone (100 mg, 0.657 mmol) and benzohydrazide (89 mg, 0.657 mmol) were dissolved in methanol (4 mL) in the presence of acetic acid as a catalyst and then the reaction mixture was heated via microwave irradiation to 120° C. for 30 min. Following cooling, the solvent was removed by vacuum, and the resulting crude material was purified by flash column chromatography (2% CH3OH/CH2Cl2) affording the title compound (100 mg) as a solid. 1H NMR (400 MHz, CD3OD): δ 7.59 (m, 2H), 7.49 (m, 1H), 7.39 (m, 2H), 7.11 (t, 1H, J=8.0 Hz), 6.45 (m, 2H), 2.35 (s, 3H). ESI-MS: 271.1 [M+H]+.

Workup

  1. temperatureFollowing cooling
  2. customthe solvent was removed by vacuum
  3. customthe resulting crude material was purified by flash column chromatography (2% CH3OH/CH2Cl2)

Sources & evidence

ORD record
ord-1f333321096e4c56b8d335fe6e728de5
Source dataset
uspto-grants-2015_03
Patent number
US08987335B2

Reaction notes

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