Perfluoroallyloxy compound and liquid crystal composition containing the same

A perfluoroallyloxy compound represented by general formula (I):

• wherein R1 represents R, RO, ROCO or RCOO;
• R represents an alkyl group which may have an unsaturated bond, a —CH2— moiety of which may be displaced with —O—, —CO— or —COO—, and a part or all of the hydrogen atoms of which may be substituted with a halogen atom or a cyano group;
• A1 and A2 each represent 1,4-phenylene (a —CH═ moiety of which may be displaced with —N═, and a part or all of the hydrogen atoms of which may be substituted with a halogen atom or a cyano group), 1,4-cyclohexylene (a —CH2— moiety of which may be displaced with —O— or —S—, and a part or all of the hydrogen atoms of which may be substituted with a halogen atom or cyano group), 2,6-naphthylene or 2,6-decahydronaphthylene;
• Z1 represents a single bond, —COO—, —OCO—, —CH2CH2—, —CH═CH—, —(CH2)4—, —CH2O—, —OCH2—, —(CH2)3O—, —O(CH2)3—, —CH═CHCH2O—, —OCH2CH═CH—, —C≡C—, —CF2O— or —OCF2—;
• B represents a single bond or alkylene group a part of the hydrogen atom of which may be substituted with a halogen atom or a cyano group;
• and n represents a number of 1 to 3;
• when n is 2 or 3, A1's and Z1's may each be the same or different.