PREPARATION AND INVESTIGATION OF THERMOTROPIC LIQUID-CRYSTALS LABELEDBY STABLE ISOTOPES - I - PREPARATION OF 4'-N-HEPTYL-BIPHENYL-4-CARBOXYLIC ACID-D(12)
K. Fodorcsorba et al., PREPARATION AND INVESTIGATION OF THERMOTROPIC LIQUID-CRYSTALS LABELEDBY STABLE ISOTOPES - I - PREPARATION OF 4'-N-HEPTYL-BIPHENYL-4-CARBOXYLIC ACID-D(12), Magyar kemiai folyoirat, 104(9), 1998, pp. 349-353
A method has been developed for the synthesis of 4'-n-heptylbiphenyl-4
-carboxylic acid-d(12). The possibilities how to retain the deuterium
labelling of the starting biphenyl-d(10) and that of labelling in new
positions of the above molecule in the synthetic process were studied.
This procedure offers the preparation of the labelled molecule in lar
ger scale for neutronscattering measurements. Structures and deuterium
contents of all the intermediates and the final products were checked
by IR, H-1 NMR and mass spectroscopy.