5-(4-[2-(N-Methyl-N-(2-benzoxazolyl)amino)ethoxy]benzylidene)-2,4-thiazolidinedione → 5-(4-[2-(N-Methyl-N-(2-benzoxazolyl)amino)ethoxy] benzyl)-2,4-thiazolidinedione hemihydrate

HRID 441024Notes

Reaction equation

HRID 441024 reaction equation
[CH3:1][N:2]([CH2:12][CH2:13][O:14][C:15]1[CH:28]=[CH:27][C:18]([CH:19]=[C:20]2[S:24][C:23](=[O:25])[NH:22][C:21]2=[O:26])=[CH:17][CH:16]=1)[C:3]1[O:4][C:5]2[CH:11]=[CH:10][CH:9]=[CH:8][C:6]=2[N:7]=1.[H][H]>O1CCOCC1.[Pd]>[OH2:4].[CH3:1][N:2]([CH2:12][CH2:13][O:14][C:15]1[CH:16]=[CH:17][C:18]([CH2:19][CH:20]2[S:24][C:23](=[O:25])[NH:22][C:21]2=[O:26])=[CH:27][CH:28]=1)[C:3]1[O:4][C:5]2[CH:11]=[CH:10][CH:9]=[CH:8][C:6]=2[N:7]=1.[CH3:1][N:2]([CH2:12][CH2:13][O:14][C:15]1[CH:16]=[CH:17][C:18]([CH2:19][CH:20]2[S:24][C:23](=[O:25])[NH:22][C:21]2=[O:26])=[CH:27][CH:28]=1)[C:3]1[O:4][C:5]2[CH:11]=[CH:10][CH:9]=[CH:8][C:6]=2[N:7]=1

Participants

5

Reactant 2

HCID 544501845-(4-[2-(N-Methyl-N-(2-benzoxazolyl)amino)ethoxy]benzylidene)-2,4-thiazolidinedioneHCID 178418361HCID 178418361, compound

Product 1

HCID 880438755-(4-[2-(N-Methyl-N-(2-benzoxazolyl)amino)ethoxy] benzyl)-2,4-thiazolidinedione hemihydrate

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 312751,4-DioxaneSolvent

Procedure

5-(4-[2-(N-Methyl-N-(2-benzoxazolyl)amino)ethoxy]benzylidene) -2,4-thiazolidinedione (1.5 g) in dry 1,4-dioxan (80 ml) was reduced under hydrogen in the presence of 10% palladium on charcoal (2 g) at ambient temperature and atmospheric pressure until hydrogen uptake ceased. The solution was filtered through diatomaceous earth, the filter pad was washed exhaustively with dioxan and the combined filtrates were evaporated to dryness under vacuum. The title compound (mp 147°-9° C.) was obtained after crystallisation from methanol.

Workup

  1. filtrationThe solution was filtered through diatomaceous earth
  2. washthe filter pad was washed exhaustively with dioxan
  3. customthe combined filtrates were evaporated to dryness under vacuum

Sources & evidence

ORD record
ord-27de2a73d12d453b83a312fa8793542c
Source dataset
uspto-grants-1996_05
Patent number
US05521201

Reaction notes

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