4-Hydroxybenzaldehyde → HCID 178513708, compound

HRID 527286Notes

Reaction equation

HRID 527286 reaction equation
[NH2:1][C:2]1[NH:6][N:5]=[C:4]([NH:7][C:8]2[CH:13]=[CH:12][C:11]([Br:14])=[C:10]([Cl:15])[CH:9]=2)[C:3]=1[C:16]([NH2:18])=[O:17].[OH:19][C:20]1[CH:27]=[CH:26][C:23]([CH:24]=O)=[CH:22][CH:21]=1>CCO.N1CCCCC1>[Br:14][C:11]1[CH:12]=[CH:13][C:8]([NH:7][C:4]2[C:3]([C:16]([NH2:18])=[O:17])=[C:2]([N:1]=[CH:24][C:23]3[CH:26]=[CH:27][C:20]([OH:19])=[CH:21][CH:22]=3)[NH:6][N:5]=2)=[CH:9][C:10]=1[Cl:15]

Participants

5

Reactant 2

HCID 1264-HydroxybenzaldehydeHCID 86701887HCID 86701887, compound

Product 1

HCID 178513708HCID 178513708, compound

Reagents, catalysts & solvents 2

HCID 8082PiperidineCatalystHCID 702EthanolSolvent

Procedure

5-amino-3-((4-bromo-3-chlorophenyl)amino)-1H-pyrazole-4-carboxamide was then suspended in 8 mL EtOH and 4-hydroxybenzaldehyde (194 mg, 1 eq.) and piperidine (4 drops) were added. Stirred at reflux until intermediate was absent (HPLC). After reaction was complete (18 hrs) it was brought to room temperature and filtered to obtain 3-((4-bromo-3-chlorophenyl)amino)-5-((4-hydroxybenzylidene)amino)-1H-pyrazole-4-carboxamide as a yellow powder. Powder was washed with EtOH to remove any excess 4-hydroxybenzaldehyde. Product was allowed to dry under vacuum for 1 hr.

Workup

  1. temperatureat reflux until intermediate
  2. customAfter reaction
  3. custom(18 hrs) it
  4. customwas brought to room temperature
  5. filtrationfiltered

Sources & evidence

ORD record
ord-df5aa152848944a1ac4780be1e8500ad
Source dataset
uspto-grants-2016_05
Patent number
US09346792B2

Reaction notes

Loading…