Reaction #4344

ord-6d3bb0315e504c3db3692c33e7836381

Reaction equation

OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O
maltose
[H][H]
hydrogen
→
OC[C@@H](O)[C@@H](O[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)CO
maltitol

Reactants

—
aqueous solution
OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O
maltose
[H][H]
hydrogen

Reagents

[Ni]
Raney nickel

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    TemperatureThereafter, the content was heated to 90°-125° C.
  2. 2
    OtherAfter completion of the hydrogenation, the Raney nickel catalyst was removed
  3. 3
    Otherthe residual aqueous solution was purified by decolorization with activated carbon, and deionization with ion exchangers

Procedure

A 50% aqueous solution of the highly-purified maltose was placed in an autoclave, and added with Raney nickel catalyst in an amount of 10%. Thereafter, the content was heated to 90°-125° C., and hydrogenation was effected at the temperature and a hydrogen pressure of 20-100 kg/cm2. After completion of the hydrogenation, the Raney nickel catalyst was removed, and the residual aqueous solution was purified by decolorization with activated carbon, and deionization with ion exchangers according to conventional methods, obtaining a highly-purified maltitol solution with a purity of 98.5%.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US04725387uspto-grants-1988_02