Patent ID: 7145047
Filing Date: 2006-12-05
Classification: C07C,C09K

Abstract:
1. A naphthalene derivative represented by the following general formula (I): wherein R a represents a C 1-20 alkyl, alkoxy, alkoxyalkyl, alkenyl or alkenyloxy group which may be substituted by a C 1-7 alkoxyl group or from 1 to 7 fluorine atoms; a and b each represent an integer, where a is 1 and b is 0 or 1; ring A represents an unsubstituted 1,4-phenylene group, 3-fluoro-1,4-phenylene group or 3,5-difluoro-1,4-phenylene group; ring B represents a trans-1,4-cyclohexylene group, 1,4-phenylene group which maybe substituted by one or more fluorine atoms, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, pyrazine-2,5-diyl group, pyridazine-3,6-diyl group, trans-1,3-dioxane-2,5-diyl group, trans-decahydronaphthalene-2,6-diyl group or tetrahydronaphthalene-2,6-diyl group; L a represents —CH 2 CH 2 —, —CH 2 CH 2 CH 2 CH 2 —, —CH═CH—, —CH═CHCH 2 CH 2 —, —CH 2 CH 2 CH═CH—, —CH(CH 3 )CH 2 —, —CH 2 CH(CH 3 )—, —CF═CF—, —CF 2 O—, —OCF 2 —, —COO—, —OCO—, —C≡C— or single bond, and L b represents —CH 2 CH 2 CH 2 CH 2 —, —CH═CH—, —CH═CHCH 2 CH 2 —, —CH 2 CH 2 CH═CH—, —CH(CH 3 )CH 2 —, —CH 2 CH(CH 3 )—, —CF═CF—, —CF 2 O—, —OCF 2 —, —COO—, —OCO—, —C≡C— or single bond with the proviso that when ring A represents an unsubstituted 1,4-phenylene group, L b represents a single bond and b=1; and Z a represents a fluorine atom, chlorine atom, trifluoromethoxy group, C group represented by the following general formula (IIa) or (IIIb): wherein L c represents —CH 2 CH 2 —, —CH 2 CH 2 CH 2 CH 2 —, —CH═CH—, —CH═CHCH 2 CH 2 —, —CH 2 CH 2 CHCH—, —CH(CH 3 )CH 2 —, —CH 2 CH(CH 3 )—, —CF═CF—, —CF 2 O—, —OCF 2 —, —OCO—, —C≡C— or single bond; L d represents —CH 2 CH 2 —, —CH 2 CH 2 CH 2 CH 2 —, —CH═CH—, —CH═CHCH 2 CH 2 —, —CH 2 CH 2 CH═CH—, —CH(CH 3 )CH 2 —, —CH 2 CH(CH 3 )—, —CF═CF—, —CF 2 O—, —OCF 2 —, —COO—, —OCO—, —C≡C— or single bond; ring C represents a trans-1,4-cyclohexylene group, 1,4-phenylene group which may be substituted by one or more fluorine atoms, pyrazine-2,5-diyl group, pyridazine-3,6-diyl group, trans-1,3-dioxane-2,5-diyl group, trans-dechydronaphthalene-2,6-diyl group or tetrahydronaphthalene-2,6-diyl group; ring D represents a trans-1,4-cyclohexylene group, 1,4-phenylene group which may be substituted by one or more fluorine atoms, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, pyrazine-2,5-diyl group, pyridazine-3,6-diyl group, trans-1,3-dioxane-2, 5-diyl group, trans-dechydronaphthalene-2,6-diyl group or tetrahydronaphthalene-2,6-diyl group; Z b represents a fluorine atom, chlorine atom, bromine atom, iodine atom, hydrogen atom, cyano group, —SCN, OCN, —R′, —OR′, or —OCOR′ wherein R′ represents a C 1-20 alkyl or alkoxy group or C 2-20 alkenyl or alkenyloxy group and these groups may be substituted by a C 1-10 alkoxyl, acyl, acyloxy or alkoxycarbonyl group and one or more hydrogen atoms contained in these groups may be substituted by one or more fluorine atoms, and in the case of forming an asymmetric carbon by the substitution or branching, it may form an optically active form or racemic form, with the proviso that when Z a represents formula (IIa) and ring C represents 1,4-phenylene group, then the phenylene group is substituted by a fluorine atom; and Z c represents a fluorine atom, chlorine atom, bromine atom, iodine atom, hydrogen atom, cyano group, —SCN, OCN, —R′, —OR′, —OCOR′ or —COOR′, wherein R′ represents a C 1-20 alkyl or alkoxy group or C 2-20 alkenyl or alkenyloxy group and these groups may be substituted by a C 1-10 alkoxyl, acyl, acyloxy or alkoxycarbonyl group and one or more hydrogen atoms contained in these groups may be substituted by one or more fluorine atoms, and in the case of forming an asymmetric carbon by the substitution or branching, it may form an optically active form or racemic form.