Patent ID: 7985455
Filing Date: 2011-07-26
Classification: C09K

Abstract:
1. A compound represented by the formula (1): wherein R 1 and R 2 each independently represent hydrogen, fluorine, chlorine, methyl or ethyl; X 1 and X 2 each independently represent hydrogen, fluorine, methyl or trifluoromethyl; Z 1 represents a single bond, —COO—, —CH═CH—COO—, —CH 2 CH 2 —COO—, —CH 2 O—, —CONH—, —(CH 2 ) 4 —, —CH 2 CH 2 — or —C≡C—; Z 2 represents a single bond, —OCO—, —OCO—CH═CH—, —OCO—CH 2 CH 2 —, —OCH 2 —, —NHCO—, —(CH 2 ) 4 —, —CH 2 CH 2 — or —C≡C—; Z 3 and Z 4 each independently represent a single bond or —O—; A 1 and A 2 each independently represent 1,4-cyclohexylene, 1,4-phenylene, 1,3-phenylene, pyridin-2,5-diyl, pyrimidin-2,5-diyl, naphthalen-2,6-diyl or tetrahydronaphtlane-2,6-diyl, in which in the 1,3-phenylene and 1,4-phenylene, arbitrary hydrogen may be replaced by fluorine or chlorine, and one or two hydrogen may be replaced by cyano, methyl, ethyl, methoxy, hydroxyl, formyl, acetoxy, acetyl, trifluoroacetyl, difluoromethyl or trifluoromethyl; and Y 1 and Y 2 each independently represent alkylene having from 2 to 20 carbon atoms, in which in the alkylene, arbitrary hydrogen may be replaced by fluorine or chlorine, and arbitrary —CH 2 — may be replaced by —O—, —COO—, —OCO—, —CH═CH— or —C≡C—.