Patent ID: 6235355
Filing Date: 2001-05-22
Classification: C07D,C09K

Abstract:
A dioxane derivative represented by general formula (I): ##STR80##wherein R represents an alkyl group of 1-20 carbon atoms or a hydrogen atom, n1 and n2, each independently, are an integer of 0-2, n1+n2.ltoreq.2, Q.sub.1 and Q.sub.2, each independently, are a hydrogen atom, fluorine atom or chlorine atom, A represents (a), (b) or (c), ##STR81##ring A0 and A1 represent a 1,4-cyclohexylene group or a 1,4-phenylene group, in which 1 or more hydrogen atoms may be replaced by a fluorine atom or a chlorine atom, and one or two carbon atoms may be replaced by a silicon atom in the 1,4-cyclohexylene in A, ring A0 and ring A1,Za and Zb, each independently, represent a single bond, --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, OCH.sub.2, --CH.sub.2 O--, COO-- or --CF.sub.2 O--,Y represents a hydrogen atom, a halogen atom, or a halogenated alkyl group of 1-5 carbon atoms, in which one or more not-adjacent methylene groups may be replaced by an oxygen atom or a sulfur group, in the case of n1=0 and n2=1, and A is (b), ring A1 is ##STR82##in the case of Y is a fluorine atom or a chlorine atom, Q1 and Q2, each independently, represent a fluorine atom or a chlorine atom; and in the case of A is (a) and Zb is a single bond, n1+n2=1, further, each element constituting the compound may be replaced by its isotope.