Pyrimidine derivatives
AssigneeHoffmann-La Roche Inc.
InventorsArthur Boller, Marco Cereghetti, Hanspeter Scherrer
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Abstract
Optically active pyrimidines of the formula ##STR1## wherein Z is --(CH.sub.2).sub.n -- or --(CH.sub.2).sub.n --O-- wherein n is an integer of 1 to 4 and each of the symbols X is a nitrogen atom and each of the symbols Y is --CH-- or each of the symbols Y is a nitrogen atom and each of the symbols X is --CH--, useful for electro-optical purposes, as well as liquid crystalline mixtures for electro-optical purposes containing compounds of the formula Ia and/or Ib, are described. The compounds of formulas Ia and Ib are useful for electro-optical purposes, for example, in electro-optical apparatuses.
Claims17
An optically active compound of the formula ##STR18## wherein Z is --(CH.sub.2).sub.n -- or --(CH.sub.2).sub.n --O--, wherein n is an integer of 1 to 4, and each of the symbols X is nitrogen and each of the symbols Y is --CH--, or each of the symbols Y is nitrogen and each of the symbols X is --CH--.
- or its (-) optical antipode.
A compound in accordance with claim 1, 5-[4'-(+)-2"-methyl-1"-butylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
A compound in accordance with claim 1, 5-[4'-(+)-3"-methyl-1"-pentylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
A compound in accordance with claim 1, 5-[4'-(+)-4"-methyl-1"-hexylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
A compound in accordance with claim 1, 5-[4'-(+)-5"-methyl-1"-heptylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Dependencies are inferred from the claim text.