Water → HCID 57437661, compound

HRID 338204Notes

Reaction equation

HRID 338204 reaction equation
[N:1]1([C:10]2[CH:17]=[CH:16][CH:15]=[CH:14][C:11]=2[C:12]#[N:13])[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1.[Br:18]N1C(=O)CCC1=O.O>O1CCOCC1>[Br:18][C:2]1[N:1]([C:10]2[CH:17]=[CH:16][CH:15]=[CH:14][C:11]=2[C:12]#[N:13])[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=1

Participants

5

Reactant 3

HCID 962WaterHCID 67184N-bromobutanimideHCID 5328435SBB025753

Product 1

HCID 57437661HCID 57437661, compound

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

Compound 1 (25.75 grams, 117.5 mmol) was dissolved in dioxane (400 mL). To this was added N-bromosuccinimide (20.91 grams, 117.5 mmol). This was stirred at reflux for 3 hours after which time the mixture was poured into water and the product was extracted with ethyl acetate. The organic layer was dried over sodium sulfate, concentrated in vacuo and chromatographed (silica gel) using a mobile phase of dichloromethane-ethyl acetate 5:1 (v/v) to provide the title compound. Mass spectral and NMR data confirm the structure. Also synthesized analogously was the 5,6-dimethylbenzimidazole analog.

Workup

  1. temperatureat reflux for 3 hours after which time the mixture
  2. extractionthe product was extracted with ethyl acetate
  3. dry with materialThe organic layer was dried over sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customchromatographed (silica gel)

Sources & evidence

ORD record
ord-2ee6d76fec424fac9924363d1faaf053
Source dataset
uspto-grants-2014_11
Patent number
US08889864B2

Reaction notes

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