Hoffmann-La Roche Inc.

Niopic Moscow Research and Production Association

Nauchno-Issledovatelsky Institut Prikladnykh Fizicheskikh Problem Imeni

Vladimir F Petrov

Martin Schadt

Richard Buchecker

Vladimir S Bezborodov

Victor V Titov

Anatoly A Minko

Mikhail F Grebenkin

Assya I Pavluchenko

Oleg A Grinkevich

Vitaly V Rzhussky

Natalia I Smirnova

Valery I Lapanik

Anatoly A Muravsky

Alexandr V Ivaschenko

Compounds of the formula ##STR1## wherein R.sup.1 is alkyl or trans-4-alkylcyclohexyl and

Liquid crystalline mixtures containing 2-(2-fluorophenyl) pyridines

2-(4,3-Disubstituted phenyl)-5-alkyl-1,3,2-dioxaborinane derivatives of the general formula ##STR1## wherein A is --OR', --CN, ##STR2## X,Y being simultaneously or independently H, F, Cl, R, R' standing for an alkyl radical of a normal structure, comprising from 1 to 7 carbon atoms, as components for a liquid crystal material. A liquid crystal material comprises at least two components, of which one is a compound of said formula, taken in an amount of from 3 to 75 percent by mass.

2-(4,3-Disubstituted phenyl)-5-alkyl-1,3,2-dioxaborinane derivatives and

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Vladimir F Petrov