Ethanol → HCID 57894328, compound

HRID 2237334Notes

Reaction equation

HRID 2237334 reaction equation
CCO.C1(C)C(S([N:13]2[CH:17]=[CH:16][CH:15]=[C:14]2[C:18](=[O:32])[C:19]2[CH:24]=[CH:23][C:22]([NH:25]C(=O)C(F)(F)F)=[CH:21][CH:20]=2)(=O)=O)=CC=CC=1.[OH-].[K+]>CCOC(C)=O>[NH2:25][C:22]1[CH:23]=[CH:24][C:19]([C:18]([C:14]2[NH:13][CH:17]=[CH:16][CH:15]=2)=[O:32])=[CH:20][CH:21]=1

Participants

5

Reactant 3

HCID 702EthanolHCID 14797Potassium HydroxideHCID 86618065HCID 86618065, compound

Product 1

HCID 57894328HCID 57894328, compoundYield 94%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To a stirred EtOH (4 mL) solution containing N-toluenesulfonyl-2-(4-(trifluoroacetylamino)benzoyl)pyrrole (0.500 g, 1.15 mmol), was added 40% KOH solution (2 mL) and the mixture was heated at reflux until thin layer chromatography (TLC) analysis showed complete conversion of the starting material. The resulting solution was cooled to room temperature and diluted with EtOAc (20 mL), and the mixture was evaporated to dryness. The crude product was purified by column chromatography (SiO2, EtOAc:Hexanes) to afford the purified product 2-(4-aminobenzoyl)pyrrole (196 mg, 94% yield). 1H NMR (400 MHz, CD2Cl2, 25° C.) δ 4.19 (bs, 2H), 6.33 (m, 1H), 6.72 (d, 2H), 6.88 (m, 1H), 7.10 (m, 1H), 7.82 (d, 2H), 9.90 (bs, 1H); 13C NMR (100 MHz, CD2Cl2, 25° C.) δ110.9, 114.2, 118.0, 124.5, 128.5, 131.8, 131.9, 151.3, 183.5; HRMS (EI): m/z 186.0793 (100) {M}+.

Workup

  1. temperaturethe mixture was heated
  2. temperatureat reflux until thin layer chromatography (TLC) analysis
  3. customthe mixture was evaporated to dryness
  4. customThe crude product was purified by column chromatography (SiO2, EtOAc:Hexanes)

Sources & evidence

ORD record
ord-559920fd2d2748a98b205d6ebe88643f
Source dataset
uspto-grants-2010_05
Patent number
US07718277B2

Reaction notes

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