Sodium Hydroxide → 5-(4-Methyl-4-nitropentyl)hydantoin

HRID 433005Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 433005
[CH3:1][C:2]([N+:14]([O-:16])=[O:15])([CH3:13])[CH2:3][CH2:4][CH:5]=[C:6]1[NH:10][C:9](=[O:11])[NH:8][C:7]1=[O:12].[OH-].[Na+].[H][H]>[C].[Pd].CO>[CH3:13][C:2]([N+:14]([O-:16])=[O:15])([CH3:1])[CH2:3][CH2:4][CH2:5][CH:6]1[NH:10][C:9](=[O:11])[NH:8][C:7]1=[O:12]

Komponenten

6

Edukt 3

HCID 14798Sodium HydroxideHCID 695837495-(4-Methyl-4-nitropentylidene)hydantoinHCID 178418361HCID 178418361, Verbindung

Produkt 1

HCID 99427025-(4-Methyl-4-nitropentyl)hydantoinAusbeute 72,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418390HCID 178418390, VerbindungKatalysator2×HCID 887MethanolLösungsmittel

Versuchsvorschrift

Methanol (200 ml) was added to 5-(4-methyl-4-nitropentylidene)hydantoin (25.85 g, 114 mmol) and 27% aqueous sodium hydroxide solution was added to adjust the pH to 10 for dissolution. Palladium-carbon (1.1 g) and hydrogen were added for reduction. After the reaction, palladium-carbon was filtered off and methanol was evaporated by concentration under reduced pressure. Water (50 ml) was added and the pH was adjusted to 2 with concentrated hydrochloric acid. The precipitated crystals were separated and dried to give 5-(4-methyl-4-nitropentyl)hydantoin (19.02 g, 83 mmol, yield 72.9%).

Aufarbeitung

  1. additionwas added
  2. dissolutionfor dissolution
  3. filtrationwas filtered off
  4. custommethanol was evaporated by concentration under reduced pressure
  5. additionWater (50 ml) was added
  6. customThe precipitated crystals were separated
  7. customdried

Quellen und Nachweise

ORD-Eintrag
ord-7cc74fbf3b544f4984ad8eeef9695e61
Quelldatensatz
uspto-grants-2003_12
Patentnummer
US06664412B2

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