4-Hydroxybenzoic acid hydrazide → HCID 2323262, compound

HRID 1667552Notes

Reaction equation

HRID 1667552 reaction equation
[OH:1][C:2]1[CH:11]=[CH:10][C:5]([C:6]([NH:8][NH2:9])=[O:7])=[CH:4][CH:3]=1.[C:12]1([CH3:20])[CH:17]=[CH:16][CH:15]=[C:14]([CH:18]=O)[CH:13]=1>C(O)(=O)C.CCO>[CH3:20][C:12]1[CH:13]=[C:14]([CH:15]=[CH:16][CH:17]=1)[CH:18]=[N:9][NH:8][C:6](=[O:7])[C:5]1[CH:10]=[CH:11][C:2]([OH:1])=[CH:3][CH:4]=1

Participants

5

Reactant 2

HCID 17424-Hydroxybenzoic acid hydrazideHCID 121053-Methylbenzaldehyde

Product 1

HCID 2323262HCID 2323262, compoundYield 76%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidCatalystHCID 702EthanolSolvent

Procedure

To a solution of 4-hydroxy-benzoic acid hydrazide (0.2 g, 0.0013 mol) in abs. EtOH (10 mL) and m-tolualdehyde (0.32 g, 0.0026 mol) was added 1 drop of acetic acid. The reaction mixture was refluxed for 4 hours. The reaction mixture was cooling to room temperature and concentrated to remove solvent. The resulting residue was solidified by EtOAc to give white solid 0.25 g, in 76% yield, mp: 241.9° C. 1H NMR (CD3OD) δ 8.27 (s, 1H), 7.83 (d, 2H), 7.67 (s, 1H), 7.59 (d, 1H), 7.31 (t, 1H), 7.24 (d, 1H), 6.88 (d, 2H), 2.37 (s, 3H). 13C NMR (CDCl3) δ 166.9, 162.8, 150.0, 139.7, 135.7, 132.2, 130.8, 129.7, 129.1, 126.1, 124.7, 116.3, 114.9, 21.3. Anal. Calcd for C15H14N2O2.¼H2O: C, 69.61; H, 5.45; N, 10.82. Found: C, 69.38; H, 5.51; N, 10.52.

Workup

  1. temperatureThe reaction mixture was refluxed for 4 hours
  2. concentrationconcentrated
  3. customto remove solvent

Sources & evidence

ORD record
ord-e9d5c7d2e1694374bc49058a13282b6c
Source dataset
uspto-grants-2011_10
Patent number
US08044241B2

Reaction notes

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