Hydrochloric Acid → HCID 51348665, compound

HRID 401056Notes

Reaction equation

HRID 401056 reaction equation
[CH3:1][N:2]1[CH:6]=[C:5]([C:7](=O)[CH2:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[N:4]=[CH:3]1.[CH2:16]([O:18][C:19]1[CH:20]=[C:21]([CH:24]=[C:25]([N+:28]([O-:30])=[O:29])[C:26]=1[OH:27])[CH:22]=O)[CH3:17].[NH2:31][C:32]([NH2:34])=[O:33].Cl>CCO>[CH2:16]([O:18][C:19]1[CH:20]=[C:21]([CH:22]2[C:8]([C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=3)=[C:7]([C:5]3[N:4]=[CH:3][N:2]([CH3:1])[CH:6]=3)[NH:34][C:32](=[O:33])[NH:31]2)[CH:24]=[C:25]([N+:28]([O-:30])=[O:29])[C:26]=1[OH:27])[CH3:17]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1176UreaHCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 67061131HCID 67061131, compound2×

Product 1

HCID 51348665HCID 51348665, compoundYield 30.8%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 1-(1-methyl-1H-imidazol-4-yl)-2-phenylethanone (Intermediate 40) (130 mg, 0.65 mmol), compound 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (165 mg, 0.78 mmol), and urea (117 mg, 1.95 mmol) in anhydrous EtOH (5 mL) was added concentrated HCl solution (0.2 mL), the reaction mixture was refluxed for 16 hours. The reaction mixture was concentrated under reduced pressure, and purified by column chromatograph and preparative HPLC to afford Compound 80 as a yellow solid (87 mg, yield: 30.8%). 1H NMR (DMSO-d6 400 MHz): δ 10.31 (s, 1H), 8.62 (m, 2H), 7.68 (s, 1H), 7.37 (d, J=2.0 Hz, 1H), 7.19-7.22 (m, 3H), 7.06 (m, 2H), 6.97-7.00 (m, 2H), 5.25 (d, J=2.4 Hz, 1H), 3.95-4.07 (m, 2H), 3.67 (s, 3H), 1.29-1.33 (t, J=6.8 Hz, 3H); MS (ESI): m/z 436.1 [M+1]+.

Workup

  1. temperaturethe reaction mixture was refluxed for 16 hours
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. custompurified by column chromatograph and preparative HPLC

Sources & evidence

ORD record
ord-84503b55568f4e338c1717ed3c7ec5b5
Source dataset
uspto-grants-2014_06
Patent number
US08741915B2

Reaction notes

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