5-(4-{1-Ethyl-1-[4-(2-hydroxy-3,3-dimethyl-butoxy)-3-methyl-phenyl)-propyl}-2-methyl-benzylidene)-thiazolidine-2,4-dione → 5-(4-{1-Ethyl-1-[4-(2-hydroxy-3,3-dimethyl-butoxy)-3-methyl-phenyl]-propyl}-2-methyl-benzyl)-thiazolidine-2,4-dione

HRID 230830Notes

Reaction equation

HRID 230830 reaction equation
[CH2:1]([C:3]([C:21]1[CH:34]=[CH:33][C:24]([CH:25]=[C:26]2[S:30][C:29](=[O:31])[NH:28][C:27]2=[O:32])=[C:23]([CH3:35])[CH:22]=1)([C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:13][CH:14]([OH:19])[C:15]([CH3:18])([CH3:17])[CH3:16])=[C:8]([CH3:20])[CH:7]=1)[CH2:4][CH3:5])[CH3:2]>CO>[CH2:1]([C:3]([C:21]1[CH:34]=[CH:33][C:24]([CH2:25][CH:26]2[S:30][C:29](=[O:31])[NH:28][C:27]2=[O:32])=[C:23]([CH3:35])[CH:22]=1)([C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:13][CH:14]([OH:19])[C:15]([CH3:17])([CH3:18])[CH3:16])=[C:8]([CH3:20])[CH:7]=1)[CH2:4][CH3:5])[CH3:2]

Participants

3

Reactant 1

HCID 866047825-(4-{1-Ethyl-1-[4-(2-hydroxy-3,3-dimethyl-butoxy)-3-methyl-phenyl)-propyl}-2-methyl-benzylidene)-thiazolidine-2,4-dione

Product 1

HCID 577634325-(4-{1-Ethyl-1-[4-(2-hydroxy-3,3-dimethyl-butoxy)-3-methyl-phenyl]-propyl}-2-methyl-benzyl)-thiazolidine-2,4-dioneYield 34%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a mixture of enantiomer 2 of 5-(4-{1-Ethyl-1-[4-(2-hydroxy-3,3-dimethyl-butoxy)-3-methyl-phenyl]-propyl}-2-methyl-benzylidene)-thiazolidine-2,4-dione (example Rupp-7) (0.25 g, 0.50 mmol) and MeOH (10 mL) is added Mg (0.12 g, 5.04 mmol). The solution is heated at a reflux for 4 hours. The solution is filtered thru Celite®, rinsed with MeOH (2 mL), and the solution concentrated. The residue is purified by ISCO (15%-30% EtOAc gradient) to furnish the title compound (0.084 g, 0.17 mmol, 34%).

Workup

  1. temperatureThe solution is heated at
  2. temperaturea reflux for 4 hours
  3. filtrationThe solution is filtered
  4. washrinsed with MeOH (2 mL)
  5. concentrationthe solution concentrated
  6. customThe residue is purified by ISCO (15%-30% EtOAc gradient)

Sources & evidence

ORD record
ord-12b93a074234476ca916c4a4ab1982e4
Source dataset
uspto-grants-2009_07
Patent number
US07566803B2

Reaction notes

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