Patent ID: 6174457
Filing Date: 2001-01-16
Classification: C07C,C07D,C09K

Abstract:
A compound represented by the general formula (1) ##STR761##wherein R.sub.1 is an alkadienyl group having 4 to 10 carbon atoms in which at least one hydrogen atom may be substituted by a fluorine atom, a chlorine atom or a cyano group; R.sub.2 is an alkenyl group having 2 to 10 carbon atoms in which at least one hydrogen atom may be substituted by a fluorine atom, a chlorine atom or a cyano group; one or more non-adjacent methylene groups (--CH.sub.2 --) in the alkadienyl group or the alkenyl group may be replaced by --O--, --CH.dbd.CH-- or --C.tbd.C--; rings A.sub.1, A.sub.2, A.sub.3 and A.sub.4 are each independently 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, pyridine-2,5-diyl or pyrimidine-2,5-diyl in which at least one hydrogen atom may be substituted by a halogen atom; Z.sub.1, Z.sub.2 and Z.sub.3 are each independently a single bond, --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, --C.tbd.C--, --CH.sub.2 O--, --OCH.sub.2 --, --(CH.sub.2).sub.4 --, --(CH.sub.2).sub.3 --O--, --O--(CH.sub.2).sub.3 --, --(CH.sub.2).sub.2 --CH.dbd.CH--, --CH.dbd.CH--(CH.sub.2).sub.2 --, --CF.sub.2 O--, --OCF.sub.2 --, --CR.dbd.CH--, --CH.dbd.CR-- or --CF.dbd.CF--, and R is an alkyl group having 1 to 5 carbon atoms; p and q are each independently 0 or 1.