4-Hydroxybenzoic acid hydrazide → HCID 2459786, compound

HRID 1667556Notes

Reaction equation

HRID 1667556 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.[F:12][C:13]([F:23])([F:22])[C:14]1[CH:21]=[CH:20][C:17]([CH:18]=O)=[CH:16][CH:15]=1>C(O)(=O)C.CCO>[F:12][C:13]([F:22])([F:23])[C:14]1[CH:21]=[CH:20][C:17]([CH:18]=[N:9][NH:8][C:6](=[O:7])[C:5]2[CH:10]=[CH:11][C:2]([OH:1])=[CH:3][CH:4]=2)=[CH:16][CH:15]=1

Participants

5

Reactant 2

HCID 17424-Hydroxybenzoic acid hydrazideHCID 679964-(Trifluoromethyl)benzaldehyde

Product 1

HCID 2459786HCID 2459786, compoundYield 94.1%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidCatalystHCID 702EthanolSolvent

Procedure

To a solution of 4-hydroxybenzhydrazide (0.3 g, 0.002 mol) and 4-trifluoromethylbenzaldehyde (0.35 g, 0.002 mol) in abs. EtOH (10 mL) 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 beige solid 0.58 g, in 94% yield, mp: 260.5° C. 1H NMR (CD3OD) δ 8.35 (s, 1H), 7.99 (d, 2H), 7.83 (d, 2H), 7.70 (d, 2H), 6.87 (d, 2H). 13C NMR (CD3OD) δ167.0, 163.0, 147.7, 1139.6, 131.0, 129.1, 126.7, 126.6, 124.5, 116.4. Anal. Calcd for C15H11F3N2O2.¼H2O: C, 57.60; H, 3.54; N, 8.95, F; 18.22. Found: C, 57.71; H, 3.77; N, 8.67, F; 18.43.

Workup

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

Sources & evidence

ORD record
ord-fd311248f28040a48d7e33877034c5ba
Source dataset
uspto-grants-2011_10
Patent number
US08044241B2

Reaction notes

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