Patent ID: 7357964
Filing Date: 2008-04-15
Classification: C09K

Abstract:
1. A compound of formula (1): wherein R 1 represents halogen, —CN, —CF 3 , —CF 2 H, —CFH 2 , —OCF 3 , —OCF 2 H, —N═C═O, —N═C═S, or alkyl having from 1 to 20 carbon atoms, and any —CH 2 — of the alkyl may be substituted with —O—, —S—, —CO—, —COO—, —OCO—, —CH═CH—, —CF═CF— or —C≡C—, and any hydrogen thereof may be substituted with halogen or —CN; R 2 , R 3 and R 5 each independently represent hydrogen or alkyl having from 1 to 3 carbon atoms; A 1 , A 2 , A 3 and A 4 each independently represent 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, naphthalene-2,6-diyl, tetrahydronaphthalene-2,6-diyl, fluorene-2,7-diyl, bicyclo[2.2.2]octane-1,4-diyl or bicyclo[3.1.0]hexane-3,6-diyl, and in these rings, any —CH 2 — may be substituted with —O—, and any —CH═ may be substituted with —N═, and in these rings, any hydrogen may be substituted with halogen or alkyl having from 1 to 5 carbon atoms; Z wherein when m+n+q=1, any —CH when m+n+q=1, Z when m+n+q=2, A