HCID 54132072, compound → HCID 10206619, compound

HRID 2253650Notes

Reaction equation

HRID 2253650 reaction equation
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[N:10]([CH2:18][CH2:19][O:20][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])=[CH:23][CH:22]=1)[CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1>O1CCOCC1.[Pd]>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[N:10]([CH2:18][CH2:19][O:20][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])=[CH:23][CH:22]=1)[CH2:11][C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1

Participants

4

Reactant 1

HCID 54132072HCID 54132072, compound

Product 1

HCID 10206619HCID 10206619, compound

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 312751,4-DioxaneSolvent

Procedure

5-(4-(2-(N-(2-Benzothiazolyl)-N-benzylamino)ethoxy)benzylidene)-2,4-thiazolidinedione (2.4 g) in dioxan (150 ml) was hydrogenated in the presence of 10% palladium-charcoal (4.8 g) for 3 h. at room temperature and atmospheric pressure. A further portion of catalyst (2.4 g) was added and the hydrogenation continued for a total of 20 h. The mixture was filtered through diatomaceous earth and the solvent was evaporated. The residue was chromatographed on silica gel with 3% methanol-dichloromethane as eluant to afford the title compound as a foam, which collapsed at 78° C.

Workup

  1. customcontinued for a total of 20 h
  2. filtrationThe mixture was filtered through diatomaceous earth
  3. customthe solvent was evaporated
  4. customThe residue was chromatographed on silica gel with 3% methanol-dichloromethane as eluant

Sources & evidence

ORD record
ord-d6c62caa27c14eeba78da1885758454e
Source dataset
uspto-grants-1993_08
Patent number
US05232925

Reaction notes

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