Patent ID: 6720039
Filing Date: 2004-04-13
Classification: C07B,C07C,C07F,C09K,G03G

Abstract:
A process for producing a liquid crystalline compound, represented by the following general formula (II): wherein R1 and R2 each independently represent a straight-chain, branched or cyclic, saturated or unsaturated hydrocarbon group having 1 to 22 carbon atoms and may be attached directly to the aromatic ring without through X1 or X2; R3 represents a hydrogen atom, a cyano group, a nitro group, or a methyl group; X1 represents a sulfur atom, or a â€”COâ€”, â€”OCOâ€”, â€”COOâ€”, â€”N&boxH;CHâ€”, â€”CONHâ€”, â€”NHâ€”, or â€”CH2â€” group; X2 represents an oxygen atom, a sulfur atom, or a â€”COâ€”, â€”COâ€”, â€”COOâ€”, â€”N&boxH;CHâ€”, â€”CONHâ€”, â€”NHâ€”, â€”NHCOâ€”, or â€”CH2â€” group; and Z represents a â€”N&boxH;Nâ€”, â€”CH&boxH;Nâ€”, â€”CH2Sâ€”, or â€”CH&boxH;CHâ€” group comprising the step of reacting a compound represented by the following general formula (3) with a compound represented by the following general formula (4): wherein R1, R2, R3, X1, and X2 are as defined above; and Y1 and Y2 are respectively groups which are reacted with each other to form a â€”COOâ€”, â€”OCOâ€”, â€”N&boxH;Nâ€”, â€”CH&boxH;Nâ€”, â€”CH2Sâ€”, â€”CH&boxH;CHâ€”, or â€”Câ‰¡Câ€” group.