تفاعل #4345

ord-876c8ad5813343f88cacf0ee9c0dee04

معادلة التفاعل

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
→
OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)CO
sorbitol
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
OC[C@@H](O)[C@@H](O[C@H]1O[C@H](CO)[C@@H](O[C@H]2O[C@H](CO)[C@@H](O)[C@H](O)[C@H]2O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)CO
maltotriitol

المتفاعلات

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

الكواشف

[Ni]
Raney nickel

ظروف التفاعل

الظروف التفصيلية
See reaction.notes.procedure_details.

المعالجة

  1. 1
    درجة الحرارةthe admixture was then heated to 90°-125° C. under stirring conditions
  2. 2
    أخرىAfter completion of the hydrogenation, the Raney nickel catalyst was removed
  3. 3
    أخرىthe hydrogenated product was purified with activated carbon and ion exchangers

الإجراء التجريبي

After adjusting the concentration of the maltose solution to 50%, to the concentrate was added Raney nickel catalyst in an amount of 10%, and the admixture was then heated to 90°-125° C. under stirring conditions, and hydrogenated at this temperature under a hydrogen pressure of 20-100 kg/cm2. After completion of the hydrogenation, the Raney nickel catalyst was removed, and the hydrogenated product was purified with activated carbon and ion exchangers according to conventional methods, obtaining a sugar alcohol mixture with a composition of sorbitol, 0.8%, maltitol, 92.2%, maltotriitol, 4.6%, and higher sugar alcohols including maltotetraitol, 2.4%, in the yield of about 92% against the starting starch material.

المصدر

DOI: 10.6084/m9.figshare.5104873.v1براءة الاختراع: US04725387uspto-grants-1988_02