Patent ID: 7524991

Claim:
A process for the production of an aminostyrylnaphthalene compound represented by formula [A]: wherein, R a and R b may be the same or different and each independently represents a substituted or unsubstituted aryl group, R c , R d , R e , R g , R h and R i may be the same or different, at least one of R c , R d , R e , R g , R h and R i independently represents a hydrogen atom, a cyano group, a nitro group, a trifluoromethyl group or a halogen atom, and the remaining one or ones of R c , R d , R e , R g , R h and R i , if any, are each a hydrogen atom, a cyano group, a nitro group, a trifluoromethyl group or a halogen atom, and R f represents an alkyl selected from the group consisting of methyl, ethyl n-propyl, i-propyl, n-butyl, i-butyl, t-butyl and allyl, a substituted or unsubstituted alicyclic hydrocarbon group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxyl group, a substituted or unsubstituted alicyclic hydrocarbyloxy group or a substituted or unsubstituted aromatic hydrocarbyloxy group; which method comprises subjecting a 4-aminobenzaldehyde represented by the following formula [B] and at least one of a phosphonate ester represented by the following formula [C] and a phosphonium represented by the following formula [D] to condensation: wherein, R a and R b have the same meanings as defined above, wherein, R j represents a hydrocarbon group, R c , R d , R e , R f , R g , R h and R i have the same meanings as defined above, and X represents a halogen atom.