Reacción #1076748

ord-41998616a7dd415388b9f444902f1e40

Ecuación de reacción

[Cl-].[Cl-].[Cl-].[Cr+3]
chromium chloride
O=C1O[C@H]([C@@H](O)CO)C(O)=C1O
ascorbic acid
O=C1O[C@H]([C@@H](O)CO)C(O)=C1O
Asc
→
O=C1O[C@H]([C@@H](O)CO)C([O-])=C1O.O=C1O[C@H]([C@@H](O)CO)C([O-])=C1O.O=C1O[C@H]([C@@H](O)CO)C([O-])=C1O.[Cr+3]
Chromium Ascorbate

Reactantes

—
Cr Asc
[Cl-].[Cl-].[Cl-].[Cr+3]
chromium chloride
O=C1O[C@H]([C@@H](O)CO)C(O)=C1O
ascorbic acid
O=C1O[C@H]([C@@H](O)CO)C(O)=C1O
Asc

Reactivos

Ninguno

Disolventes

O
water
O
water

Condiciones de reacción

Temperatura
50°CELSIUS
Condiciones detalladas
See reaction.notes.procedure_details.

Tratamiento posterior

  1. 1
    Otroto get a green solution
  2. 2
    workup.ADDITIONwas added to the solution
  3. 3
    Otroto get a dark green solution
  4. 4
    ConcentraciónThe solution was concentrated in vacuum
  5. 5
    workup.ADDITIONthe large volume of ethanol 90% was added
  6. 6
    Otroto get a green sediment

Procedimiento

Half gram (1.85 mmole) of chromium chloride (CrCl3) was dissolved in 30 ml of deionized water to get a green solution. 1.0 g (5.5 mmole) of ascorbic acid (Asc) dissolved in 40 ml of deionized water, was added to the solution. The pH of the reaction mixture was adjusted to 4.5 (pK(Asc)4.2), and the reaction mixture was stirred for 3 hours at 50° C. to get a dark green solution. The solution was concentrated in vacuum and the large volume of ethanol 90% was added to get a green sediment. UV-VIS Spectrum for Cr-Asc showed two main absorbance peaks at 263 and 592 nm.

Fuente

DOI: 10.6084/m9.figshare.5104873.v1Patente: US06458351B2uspto-grants-2002_10