Patent ID: 8916718

Claim:
A compound represented by general formula (1), (in the formula, R represents an alkyl group having 1 to 15 carbon atoms or an alkenyl group having 2 to 15 carbon atoms, and one —CH 2 — or two or more unadjacent —CH 2 — present in the group may be substituted by —O—, —S—, —COO—, —OCO—, or —CO—; A 1 and A 2 each independently represent a group selected from the group consisting of (a) a 1,4-cyclohexylene group (one —CH 2 — or two or more unadjacent —CH 2 — present in the group may be substituted by —O— or —S—), (b) a 1,4-phenylene group (one —CH═ or two or more unadjacent —CH═ present in the group may be substituted by —N═, and a hydrogen atom present in the group may be substituted by a fluorine atom), and (c) a naphthalene-2,6-diene group (a hydrogen atom present in the group may be substituted by a fluorine atom); Z 1 and Z 2 each independently represent —CH 2 O—, —OCH 2 —, —CF 2 O—, —OCF 2 —, —CH 2 CH 2 —, —CF 2 CF 2 —, —CH═CH—, —CF═CF—, —C≡C—, or a single bond; Y 1 represents a fluorine atom, and Y 2 and Y 3 each independently represent a hydrogen atom, a fluorine atom, or a chlorine atom; W represents a fluorine atom, a chlorine atom, a cyano group, —CF 3 —, —OCH 2 F, —OCHF 2 , or —OCF 3 ; m and n each independently represent 0, 1, or 2, m+n is 0, 1, or 2, and when there is a plurality of each or any of A 1 , A 2 , Z 1 , and Z 2 , each or any of A 1 , A 2 , Z 1 and Z 2 may be the same or different).