Über einige Derivate der Saccharose. I. Darstellung und Eigenschaften von oxäthylierten Saccharosen

Abstract

Es werden Reaktionsbedingungen zur Darstellung von Saccharosepolyäthylenäthern untersucht. Über einige Eigenschaften der erhaltenen Produkte wird berichtet.

Chemistry and application of organic isocyanates. II. Application of tolylene‐2,4‐diisocyanate for the Syntheses of New Surface‐Active Urethanes of poly(oxyethylene)‐sucrose and poly(oxyethylene)glucose

“…Next, the procedures were as in the syntheses of diuret,hanes 6-10. The obtained compounds the results of t,heir analyses and their short characteristics were summarized in Table 4. P r e p a r a t i o n of eicosa(oxyethy1ene)sucrose 2-methyl-5-n-nonyl-; 5-n-decyl-2-met h y 1 -; 5nd o d e c y 1 -2m e t h y 1 -; 2 -m e t h y 1 -5 -a -t e r p i n y 1or 5born y 1 ox y c a r b o n y a m in o - (compounds 16, 17, 18, 19 o r 20) The compounds mentioned above were synthesized as previously, starting from 5 g (0.004 mole) of poly(oxyethy1ene)sucrose with 20 OE groups and 0.004 mole of appropriate isocyanatoca,rbamate (1)(2)(3)(4)(5). The reactions were carried out in dimethylformamide as a solvent, in the presence of 0.1% of triet,hylamine (in relation to the isocyanate), a t 70"C, for 8 hrs, in N, atmosphere.…”

“…This process was carried out by means of ethylene oxide, which was used to treat the selected saccharide in the autoclavc, in the presence of alkaline catalyst, at 75OC [2] in the case of oxyethylenation of sucrose (Scheme 1) and at room temperature during oxyethylenation of glucose (Scheme 2).…”