Formaldehyde → 2,2-Dinitropropanol

HRID 1165575

Reaktionsgleichung

Reaktionsgleichung von HRID 1165575
[OH-:1].[Na+].[N+:3]([CH2:6][CH3:7])([O-:5])=[O:4].[CH2:8]=O.[N:10]([O-:12])=[O:11].[Na+].S(OOS([O-])(=O)=O)([O-])(=O)=O.[Na+].[Na+]>O.[Fe-3](C#N)(C#N)(C#N)(C#N)(C#N)C#N.[K+].[K+].[K+]>[N+:3]([C:6]([N+:10]([O-:12])=[O:11])([CH3:8])[CH2:7][OH:1])([O-:5])=[O:4]

Komponenten

8

Edukt 5

HCID 712FormaldehydeHCID 6587Nitroethane2×HCID 14798Sodium HydroxideHCID 62655Sodium PersulfateHCID 23668193Sodium Nitrite

Produkt 1

HCID 701942,2-DinitropropanolAusbeute 65,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178511488HCID 178511488, VerbindungKatalysatorHCID 962WaterLösungsmittel4×

Versuchsvorschrift

To a stirred solution of 2.66 g (66.5 mmoles) of sodium hydroxide in 15 ml of water at 20° was added 5.0 g (66.5 mmoles) of nitroethane. When all the nitroethane dissolved, the solution was cooled to 5°-7° in an ice-water bath and 5.4 g of 37% aqueous formaldehyde (66.5 mmoles) was then added. The cooling bath was removed and the mixture was stirred for 2 hours before the ice-water bath was replaced and 25 ml of ether was added. A solution of 18.3 g of sodium nitrite (0.265 mole) in 30 ml of water was then added followed by solutions of 15.8 g (66.3 mmoles) of sodium persulfate in 30 ml of water and 4.4 g (13.4 mmoles) of potassium ferricyanide in 15 ml of water. The reaction temperature rose from 14° to 35°. The mixture was then stirred at ambient temperature for 1 hour and phases were separated. The aqueous phase was extracted twice with ether and the combined ether extracts were washed with brine and dried. The product was distilled in a short path distillation apparatus to give 6.57 g (65% yield) of 2,2-dinitropropanol.

Aufarbeitung

  1. temperaturethe solution was cooled to 5°-7° in an ice-water bath
  2. customThe cooling bath was removed
  3. addition25 ml of ether was added
  4. customrose from 14° to 35°
  5. stirringThe mixture was then stirred at ambient temperature for 1 hour
  6. customphases were separated
  7. extractionThe aqueous phase was extracted twice with ether
  8. washthe combined ether extracts were washed with brine
  9. customdried
  10. distillationThe product was distilled in a short path distillation apparatus

Quellen und Nachweise

ORD-Eintrag
ord-667b82bae5b2427fbeb5a1d2390d17c7
Quelldatensatz
uspto-grants-1990_03
Patentnummer
US04910322

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