Hydrochloric Acid → HCID 51347778, compound

HRID 401009Notes

Reaction equation

HRID 401009 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)=O)=[CH:4][CH:3]=1.[CH2:17]([O:19][C:20]1[CH:21]=[C:22]([CH:25]=[C:26]([N+:29]([O-:31])=[O:30])[C:27]=1[OH:28])[CH:23]=O)[CH3:18].[NH2:32][C:33]([NH2:35])=[O:34].Cl>CCO.CO.CCOC(C)=O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:23]([C:22]3[CH:25]=[C:26]([N+:29]([O-:31])=[O:30])[C:27]([OH:28])=[C:20]([O:19][CH2:17][CH3:18])[CH:21]=3)[NH:32][C:33](=[O:34])[NH:35][C:9]=2[C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)=[CH:4][CH:3]=1

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 1176UreaHCID 95829Ethanone, 2-(4-chlorophenyl)-1-phenyl-HCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehyde

Product 1

HCID 51347778HCID 51347778, compoundYield 6.25%

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 887MethanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a mixture of 2-(4-chlorophenyl)-1-phenylethanone (200 mg, 0.88 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (200 mg, 0.95 mmol), and urea (156 mg, 2.65 mmol) in anhydrous EtOH (20 mL) was added concentrated HCl solution (0.1 mL), and the reaction mixture was refluxed for three days. When TLC (EtOAc:MeOH=10:1) showed that about 50% of starting materials were consumed, the reaction mixture was concentrated, and the residue was purified by column chromatography (EtOAc:MeOH=40:1) and preparative HPLC to afford Compound 27 as a yellow solid (25 mg, yield: 6.25%). 1H NMR (DMSO-d6 400 MHz TMS): δ 10.30 (s, 1H), 8.81 (s, 1H), 7.60 (s, 1H), 7.45 (s, 1H), 7.25-7.30 (m, 3H), 7.17-7.24 (m, 3H), 7.10 (d, J=8.8 Hz, 2H), 6.80 (d, J=8.4 Hz, 2H), 5.20 (d, J=2.8 Hz, 1H), 4.00-4.11 (m, 2H), 1.33 (t, J=6.8 Hz, 3H); MS (ESI): m/z 466.0 [M+1]+.

Workup

  1. temperaturethe reaction mixture was refluxed for three days
  2. customwere consumed
  3. concentrationthe reaction mixture was concentrated
  4. customthe residue was purified by column chromatography (EtOAc:MeOH=40:1) and preparative HPLC

Sources & evidence

ORD record
ord-b7e582a9fd4e4e64888141021319ed19
Source dataset
uspto-grants-2014_06
Patent number
US08741915B2

Reaction notes

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