Disubstituted pyrimidines
US4462923A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1981 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Oct 7, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/3425
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Pyrimidines of the formula: ##STR1## wherein Y is nitrogen and Z is .dbd.CH--, or Z is nitrogen and Y is .dbd.CH--; R.sup.1 is alkyl and R.sup.2 is cyano, alkyl, p-alkylphenyl or trans-4-alkylcyclohexyl; where each alkyl denotes either a straight chain alkyl group of 1 to 12 carbon atoms or a branched chain alkyl group of the formula C.sub.2 H.sub.5 --CH(CH.sub.3)--(CH.sub.2).sub.n, n is 1, 2 or 3; with the proviso that the compound contains at most only one of said branched chain alkyl group and with the further proviso that the sum of the carbon atoms in all of the alkyl groups within the compound is at most 14 are described. Liquid crystalline mixtures comprising Compound I as well as their use in electro-optical devices also are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.