Dimethylformamide → Tert-butyl 4-cyano-5-(methylsulfonyl)thiophene-2-carboxylate

HRID 1983078Notes

Reaction equation

HRID 1983078 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[S:6][C:7]=1SC)#[N:2].O[O:18][S:19]([O-:21])=O.[K+].[CH3:23]N(C)C=O>>[C:1]([C:3]1[CH:4]=[C:5]([C:10]([O:12][C:13]([CH3:14])([CH3:16])[CH3:15])=[O:11])[S:6][C:7]=1[S:19]([CH3:23])(=[O:21])=[O:18])#[N:2]

Participants

4

Reactant 3

HCID 6228DimethylformamideHCID 23707502Potassium hydroxy sulfiteHCID 66785900Tert-butyl 4-cyano-5-(methylthio)thiophene-2-carboxylate

Product 1

HCID 66785761Tert-butyl 4-cyano-5-(methylsulfonyl)thiophene-2-carboxylate

Procedure

A mixture of tert-butyl 4-cyano-5-(methylthio)thiophene-2-carboxylate (1.4 g, 5.5 mmol) and oxone (14.4 g, 21.5 mmol) in dimethylformamide (100 mL) was stirred at room temperature for 16 hours. The reaction mixture was then poured into ice/water (400 mL) and extracted with ethyl acetate. Organic layer was washed with water, dried over anhydrous sodium sulfate and evaporated to give 1.5 g of the title compound.

Workup

  1. extractionextracted with ethyl acetate
  2. washOrganic layer was washed with water
  3. dry with materialdried over anhydrous sodium sulfate
  4. customevaporated

Sources & evidence

ORD record
ord-6127a36631b8449b81182a5e4d8029f9
Source dataset
uspto-grants-2009_06
Patent number
US07541378B2

Reaction notes

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