N-bromobutanimide → HCID 58610288, compound

HRID 642290Notes

Reaction equation

HRID 642290 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[S:10][C:9]([C:11]2[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][CH:12]=2)=[N:8][C:7]=1[CH3:18])=[O:5])[CH3:2].[Br:19]N1C(=O)CCC1=O>C(Cl)(Cl)(Cl)Cl.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>[CH2:1]([O:3][C:4]([C:6]1[S:10][C:9]([C:11]2[CH:12]=[CH:13][C:14]([Cl:17])=[CH:15][CH:16]=2)=[N:8][C:7]=1[CH2:18][Br:19])=[O:5])[CH3:2]

Participants

5

Reactant 2

HCID 67184N-bromobutanimideHCID 2743519Ethyl 2-(4-chlorophenyl)-4-methyl-1,3-thiazole-5-carboxylate

Product 1

HCID 58610288HCID 58610288, compoundYield 100.9%

Reagents, catalysts & solvents 2

HCID 7187Benzoyl PeroxideCatalystHCID 5943Carbon TetrachlorideSolvent

Procedure

A mixture of 2-(4-chloro-phenyl)-4-methyl-thiazole-5-carboxylic acid ethyl ester (2.50 g, 8.88 mmol), N-bromosuccinimide (2.13 g, 12.0 mmol) and benzoyl peroxide (150 mg, 0.62 mmol) in carbon tetrachloride (50 mL) was refluxed for 24 h before it was cooled to room temperature and partitioned between dichloromethane and water. The organic layer was washed with saturated aqueous sodium bicarbonate solution, brine, dried over anhydrous sodium sulfate and concentrated in vacuo to give the title compound as a yellow solid (3.23 g, product is 69% pure by 1H NMR, impurities are starting material and dibromonated compound): 1H NMR (CDCl3, 200 MHz): δ=7.90 (d, 2H), 7.44 (d, 2H), 4.96 (s, 3H), 4.38 (q, J=7.0 Hz, 2H), 1.44 (t, J=7.0 Hz, 3H).

Workup

  1. temperaturewas refluxed for 24 h before it
  2. custompartitioned between dichloromethane and water
  3. washThe organic layer was washed with saturated aqueous sodium bicarbonate solution, brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-dcc7b2b7e49d463e8c2f12cb74204b4a
Source dataset
uspto-grants-2010_04
Patent number
US07696223B2

Reaction notes

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