Spectroscopic Properties, Structural Aspects, and Analytical Detection

Spectroscopic Properties, Structural Aspects, and Analytical Detection 

Isohexide mono- (10-13), as well as di-, nitrates (14-16) show a weak, positive dichroic band at 265 nm (n— D transition) and a second, stronger one near 228 nm, which is positive for endo-R-nitrato and negative for exo-S-nitrato groups. For isosorbide dinitrate (14), both dichroic bands are positive.12,13 

In the presence of isosorbide, and of isomannide, as a chiral environment, optical rotation is induced in symmetric carbonyl and nitro compounds, 

The unsubstituted parent compound m-2,6-dioxabicyclo[3.3.0]octane (6) was characterized,16 without assignment, by five absorption bands at 1110, 1060, 1040, 1020, and 900 cm 1 (in CC14). 

The monoketone 8 and the diketone 9 are characterized11 by a carbonyl stretching-vibration band at 1765 cm-1 (KBr and acetonitrile). 

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III. Spectroscopic Properties, Structural Aspects, and Analytical Detection. 99... 

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