Patent ID: 6337034
Filing Date: 2002-01-08
Classification: C07C,C07D,C09K

Abstract:
A vinylene compound expressed by the general formula (1)Raâ€”A1â€”Z1â€”A2â€”Z2â€”A3â€”(Z3â€”A4)mâ€”Rbâ€ƒâ€ƒ(1) wherein Ra represents an alkyl group having 1 to 20 carbon atoms one or more â€”CH2â€” in which alkyl group may be replaced by â€”Oâ€”, â€”Sâ€”, â€”COâ€”, â€”CH&boxH;CHâ€”, or â€”Câ‰¡Câ€”, but in no case â€”Oâ€” and/or â€”Sâ€” continues, and one or more hydrogen atoms in which alkyl group may be replaced by a halogen atom; Rb represents Ra, a halogen atom, or cyano group; A1, A2, A3, and A4 independently represent trans-1,4-cyclohexylene group, cyclohexenylene group, 1,4-phenylene group one or more hydrogen atoms on which ring may be replaced by a halogen atom or cyano group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, or 1,3-dioxane-2,5-diyl group; and Z1, Z2, and Z3 independently represent a vinylene group, â€”COOâ€”, â€”OCOâ€”, â€”(CH2)2â€”, â€”Câ‰¡Câ€”, â€”CH2Oâ€”, â€”OCH2â€”, or a covalent bond provided that at least one of Z1 to Z3 is a vinylene group a ring pair holding the vinylene group therebetween is under the following condition, and at least one of Z1 to Z3 represents â€”COOâ€” or â€”OCOâ€”; and m is 0 or 1;condition for the ring pair: at least one of the rings of the pair is selected from trans-1,4-cyclohexylene group, cyclohexenylene group, or 1,3-dioxane-2,5-diyl group.