Hydrochloric Acid → HCID 18930420, compound

HRID 1975212Notes

Reaction equation

HRID 1975212 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[NH:12][C:11]([C:13]([O:15]CC)=[O:14])=[CH:10][C:9]=2[S:18][CH:19]([F:21])[F:20])=[CH:4][CH:3]=1.[OH-].[Na+].Cl>C(O)C.O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[NH:12][C:11]([C:13]([OH:15])=[O:14])=[CH:10][C:9]=2[S:18][CH:19]([F:21])[F:20])=[CH:6][CH:7]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 18930396HCID 18930396, compound

Product 1

HCID 18930420HCID 18930420, compoundYield 104%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

A solution of ethyl 5-(p-chlorophenyl)-4-[(difluoromethyl)thio]pyrrole-2-carboxylate (166 mg, 0.5 mmol) in ethanol is treated under nitrogen with a solution of sodium hydroxide (100 mg, 2.5 mmol) in water. The reaction mixture is refluxed for three hours, poured into ice-water, treated with hydrochloric acid and extracted with ethyl acetate. The combined organic extracts are washed with water and brine, dried over anhydrous sodium sulfate and concentrated in vacuo to obtain the title product as an orange solid (158 mg, mp 165° C. (dec)) which is identified by 1HNMR and 13CNMR spectral analyses.

Workup

  1. temperatureThe reaction mixture is refluxed for three hours
  2. extractionextracted with ethyl acetate
  3. washThe combined organic extracts are washed with water and brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-918cf82f96224f159158fc1b15e2f54c
Source dataset
uspto-grants-1994_02
Patent number
US05284863

Reaction notes

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