A reaction of 2,2-disubstituted 1,1-dicyanoethenes with β-dimethylaminoacrolein aminal and 3-dimethylamino-1,1,3-trimethoxypropane leads to substituted 6,6-dicyano-1-dimethyl-aminohexatrienes and an organic salt containing 1,1,9,9-tetracyano-2,8-diphenylnona-2,4,6,8-tetraenide as the anion and (dimethylaminopropenylidene)dimethylammonium as the cation, on the basis of which new cation-anionic polymethine dyes were obtained.
2,2-二取代的 1,1-二
氰基
乙烯与 β-二甲基
氨基
丙烯醛氨基和 3-二甲基
氨基-
1,1,3-三甲氧基丙烷反应,生成取代的 6,6-二
氰基-1-二甲基
氨基己
三烯和含有 1、1,9,9-tetracyano-2,8-diphenylnona-2,4,6,8-tetraenide 作为阴离子,(dimethylaminopropenylidene)dimethylammonium 作为阳离子的有机盐。