75783-87-8Relevant academic research and scientific papers
MESOMORPHIC BEHAVIOR OF SOME NEW FLUORENE COMPOUNDS
Arora, S. L.,Vaz, N. A. P.,Doane, J. W.
, p. 161 - 174 (2007/10/02)
Several new fluorene derivatives have been synthesized and their liquid crystalline polymorphic behavior examined.Specifically, 2-fluorenylmethylidene-4'-n-alkylanilines with different alkyl groups are compared with corresponding compounds wherein the alkyl groups have been replaced either by the alkoxy or other different groups.In addition, some of the 4-alkyl and alkoxybenzylidene-2-aminofluorenes have also been prepared for comparison.Many of these compounds show not only the nematic phase but also two smectic phases.The presence of a lateral substituent in analogous compounds decreases the nematic-isotropic transition by about 60 deg C.
Synthesis of Phosphonic Analogues of Morphactines
Gancarz, R.,Wieczorek, J. S.
, p. 213 - 222 (2007/10/02)
9-Aminofluorenphosphonsaeuren (Morphaktine) entstehen durch Addition von Diethylphosphit an 9-Imino-fluorenderivate.Die primaer erhaltenen Ester werden zu den korrespondierenden Saeuren hydrolysiert, eine Reihe der Aminophosphonsaeuren zerfallen unter den
