1,2:3,5‐Di‐O‐isopropyliden‐D‐glucofuranose (I) und l,2:3,4‐Di‐O‐isopropyliden‐D‐galaktopyranose (IV) werden mit Hilfe von Hexamethyltriamidophosphit (II) in 6‐Ste1lung phosphoryliert, man erhält die Phosphite (III) und (V).

Intrinsic localized modes in the gap of a diatomic chain with free ends are discussed in detail by going beyond the rotating wave approximation. We include in the time dependence of the displacements terms up to cos(2ωt). We consider a finite chain of particles interacting with nearest-neighbour interactions. We study amplitudes of the intrinsic localized modes smaller than 0.25 Å. In this range of amplitudes the full potential can be well represented by an expansion in powers of the displacements up to fourth-order terms. The use of a force constant model allows us to simplify the problem. As a test case we consider a chain of LiI atoms. We found intrinsic localized modes in the gap. The amplitudes of the first harmonic term (cos(ωt)) are of even or odd parity, whereas we prove that the amplitudes of the static part and those of the second harmonic can have only even symmetry. The main result of the paper is that the amplitudes associated with the second harmonic are two or three orders of magnitude less than those of the first harmonic. Furthermore, the frequency of the localized modes are modified by less than 1% by the inclusion of the second harmonic.

Lävoglucosan (I) hält man mit Natriumhypophosphit und H3PO2 40 Stdn. auf 85°C. Dabei entsteht das Natriumsalz (II).

Es wird auf die Bedeutung saurer Katalysatoren (Essigsäure, salzsaure Amine) bei Synthesen mit Amiden von Säuren des dreiwertigen Phosphors hingewiesen.

Übersicht über Möglichkeiten der Synthese nicht natürlich vorkommender Phosphite und Phosphate von Kohlenhydraten, ihre chemischen Eigenschaften und ihr Verhalten bei Fermentreaktionen.