Potassium tert-butoxide → 2-Ethoxycarbonylimino-3-(3-trifluoromethylphenyl) 5-methylthiazoline

HRID 22024Notes

Reaction equation

HRID 22024 reaction equation
[CH2:1]([O:3][C:4]([N:6]=[C:7]1[N:11]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([C:18]([F:21])([F:20])[F:19])[CH:13]=2)[CH2:10][CH:9]([CH2:22]Br)[S:8]1)=[O:5])[CH3:2].CC(C)([O-])C.[K+]>C(O)(C)(C)C>[CH2:1]([O:3][C:4]([N:6]=[C:7]1[N:11]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([C:18]([F:20])([F:21])[F:19])[CH:13]=2)[CH:10]=[C:9]([CH3:22])[S:8]1)=[O:5])[CH3:2]

Participants

4

Reactant 2

HCID 23665647Potassium tert-butoxideHCID 536349452-Ethoxycarbonylimino-3-(3-trifluoromethylphenyl)-5-bromomethylthiazolidine

Product 1

HCID 538034182-Ethoxycarbonylimino-3-(3-trifluoromethylphenyl) 5-methylthiazolineYield 64%

Reagents, catalysts & solvents 1

HCID 6386tert-ButanolSolvent

Procedure

A solution of 2-ethoxycarbonylimino-3-(3-trifluoromethylphenyl)-5-bromomethylthiazolidine (0.7 g) and potassium t-butoxide (0.25 g) in t-butanol (30 ml) was refluxed for 5 hours. After removal of the solvent under reduced pressure, the concentrated residue was extracted with chlorofom (100 ml), washed with water and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure,-and the residue was subjected to column chromatography to give 0.36 g of 2-ethoxycarbonylimino-3-(3-trifluoromethylphenyl)-5-methylthiazoline (Compound No. 1).

Workup

  1. customAfter removal of the solvent under reduced pressure
  2. extractionthe concentrated residue was extracted with chlorofom (100 ml)
  3. washwashed with water
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was removed under reduced pressure

Sources & evidence

ORD record
ord-482e9d172cd34ba28ef8a7bd2430533d
Source dataset
uspto-grants-1995_06
Patent number
US05426188

Reaction notes

Loading…