Hydrochloric Acid → HCID 66826400, compound

HRID 401055Notes

Reaction equation

HRID 401055 reaction equation
[C:1]1([CH2:7][C:8]([C:10]2[CH:14]=[CH:13][S:12][CH:11]=2)=O)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:15]([O:17][C:18]1[CH:19]=[C:20]([CH:23]=[C:24]([N+:27]([O-:29])=[O:28])[C:25]=1[OH:26])[CH:21]=O)[CH3:16].[NH2:30][C:31]([NH2:33])=[O:32].Cl>CCO.O>[CH2:15]([O:17][C:18]1[CH:19]=[C:20]([CH:21]2[C:7]([C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)=[C:8]([C:10]3[CH:14]=[CH:13][S:12][CH:11]=3)[NH:33][C:31](=[O:32])[NH:30]2)[CH:23]=[C:24]([N+:27]([O-:29])=[O:28])[C:25]=1[OH:26])[CH3:16]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 1176UreaHCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 14948128HCID 14948128, compound2×

Product 1

HCID 66826400HCID 66826400, compoundYield 23%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

A mixture of 2-phenyl-1-(thiophen-3-yl)ethanone (Intermediate 39) (100 mg, 0.49 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (95 mg, 0.45 mmol), urea (81 mg, 1.35 mmol), and concentrated HCl solution (0.04 mL, 0.45 mmol) in EtOH (5 mL) was refluxed overnight. The mixture was diluted with water, and extracted with EtOAc. The organic layer was separated, and the aqueous layer was extracted with EtOAc. The combined organic layer was dried over Na2SO4, evaporated in vacuo, and purified by preparative HPLC to give Compound 79 (45 mg, yield 23%). 1H NMR (DMSO-d6 300 MHz): δ 10.19 (s, 1H), 8.50 (s, 1H), 7.43-7.40 (m, 2H), 7.30-7.24 (m, 2H), 7.04-7.00 (m, 4H), 6.83-6.80 (m, 2H), 6.52 (s, J=5.1 Hz, 1H), 5.07 (d, J=2.4 Hz, 1H), 3.97-3.88 (m, 2H), 1.22 (t, J=6.9 Hz, 3H); MS (ESI): m/z 438.0 [M+1]+.

Workup

  1. temperaturewas refluxed overnight
  2. extractionextracted with EtOAc
  3. customThe organic layer was separated
  4. extractionthe aqueous layer was extracted with EtOAc
  5. dry with materialThe combined organic layer was dried over Na2SO4
  6. customevaporated in vacuo
  7. custompurified by preparative HPLC

Sources & evidence

ORD record
ord-281fd8570c3d4076ba17a1575e5cd58c
Source dataset
uspto-grants-2014_06
Patent number
US08741915B2

Reaction notes

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