Hydrochloric Acid → HCID 66826446, compound

HRID 401084Notes

Reaction equation

HRID 401084 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH2:8][C:9]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)=O)[CH:5]=[CH:6][CH:7]=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>C(O)C>[CH2:17]([O:19][C:20]1[CH:21]=[C:22]([CH:23]2[C:8]([C:4]3[CH:5]=[CH:6][CH:7]=[C:2]([F:1])[CH:3]=3)=[C:9]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=3)[NH:35][C:33](=[O:34])[NH:32]2)[CH:25]=[C:26]([N+:29]([O-:31])=[O:30])[C:27]=1[OH:28])[CH3:18]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1176UreaHCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 27590612-(3-fluorophenyl)-1-phenylethanone

Product 1

HCID 66826446HCID 66826446, compoundYield 20%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 2-(3-fluorophenyl)-1-phenylethanone (commercially available) (200 mg, 0.93 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (197 mg, 0.93 mmol), urea (168 mg, 2.8 mmol), conc. hydrochloric acid (0.5 mL) in ethanol (3 mL) was refluxed for 61 hours. After cooling to room temperature, the mixture was evaporated and purified by silica gel column chromatography (petroleum ether/ethyl acetate=3:1) to give Compound 115 (85.8 mg, yield 20%). 1HNMR (DMSO-d6 400 MHZ): δ 10.31 (brs, 1H), 8.82 (s, 1H), 7.59 (s, 1H), 7.45 (d, J=1.2 Hz, 1H), 7.31-7.22 (m, 6H), 7.10-7.00 (m, 1H), 6.84-6.80 (m, 1H), 6.64-6.56 (m, 2H), 5.26 (d, J=2.4 Hz, 1H), 4.15-4.00 (m, 2H), 1.36 (t, J=6.8 Hz, 3H). MS (ESI): m/z 450.0 [M+H]+.

Workup

  1. temperaturewas refluxed for 61 hours
  2. customthe mixture was evaporated
  3. custompurified by silica gel column chromatography (petroleum ether/ethyl acetate=3:1)

Sources & evidence

ORD record
ord-4ead56b582cc43a89a639cda6170c7d3
Source dataset
uspto-grants-2014_06
Patent number
US08741915B2

Reaction notes

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