439610-86-3Relevant academic research and scientific papers
Synthesis of new chiral smectic mesogenes with 4-(2-Phenylethyl)biphenyl and 4-[2-(3-Fluorophenyl)ethyl]biphenyl Molecular Cores
Kula, Przemysaw,Spado, Anna,Zurowska, Magdalena,Dabrowski, Roman
scheme or table, p. 1394 - 1396 (2010/07/14)
Two methods of synthesis of chosen 1-[4-(1-methyl-heptyloxycarbonyl)phenyl] -2-[4′-(2,2,3,3,4,4,4-heptafluorobutoxyalkoxy)biphenyl-4-yl]ethanes and 1-[3-fluoro-4-(1-methylheptyloxycarbonyl)phenyl]-2-[4′-(2,2,3,3,4,4, 4-heptafluorobutoxyalkoxy)bi-phenyl-4-yl]ethanes have been proposed, checked and compared. The compounds were prepared by Sonogashira coupling of 4-benzyloxy-4′-ethynylbiphenyl with appropriate 4-halobenzoate esters followed by parallel hydrogenation of ethynylene bridge and debenzylation of hydroxyl group. The 1-[4-(1-methylheptyloxycarbonyl)phenyl]-2-[4′- hydroxybiphenyl-4-yl]ethane and 1-[3-fluoro-4-(methoxycarbonyl)phenyl]-2- [4′-hydroxybiphenyl-4-yl]ethane thus obtained has been transformed into final products by Mitsunobu reaction with ω-(2,2,3,3,4,4,4- heptafluorobutoxy)alkan-1-ols, followed by the replacing of an ester terminal chain in the case of second method.
Orthoconic antiferroelectrics. Synthesis and mesomorphic properties of optically active (S)-(+)-4-(1-methylheptyloxycarbonyl)phenyl 4′-(fluoroalkanoyloxyalkoxy)biphenyl-4-carboxylates and 4′-(alkanoyloxyalkoxy)biphenyl-4-carboxylates
Drzewinski,Dabrowski,Czuprynski
, p. 273 - 284 (2007/10/03)
Convenient methods for preparing optically active (S)-(+)-4-(1-methylheptyloxycarbonyl)-phenyl 4′-(ω-perfluoroalkanoyloxyalkoxy)- and 4′-(ω-alkanoyloxyalkoxy)biphenyl-4-carboxylates and their intermediates have been described and discussed. The phase transitions of the prepared esters have been investigated by differential scanning calorimetry.
