SYNTHESIS AND SOLVATOCHROMIC BEHAVIOR OF STILBAZOLIUM MEROCYANINE-TYPE DYES HAVING A BENZO[C]QUINOLIZINIUM RING

被引:12
作者
ARAI, S
ARAI, H
HIDA, M
YAMAGISHI, T
机构
[1] Department of Industrial Chemistry, Faculty of Engineering, Tokyo Metropolitan University, Hachioji, Tokyo, 192-03
关键词
D O I
10.3987/COM-94-6867
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A series of stilbazolium merocyanine-type dyes, 3-[2-(hydroxy-substituted aryl)vinyl]benzo[c]quinolizinium perchlorates, was synthesized by the aldol-type condensation of 3-methylbenzo[c]quinolizinium perchlorate with hydroxy-substituted benzaldehyde derivatives in 45-85% yields. The deprotonated form of the dyes exhibited the pronounced negative solvatochromism extended almost over the whole visible region. The negative solvatochromic character of the dyes having a benzo[c]quinolizinium ring was more striking than that of the isomeric dyes having a benzo[a]quinolizinium ring.
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页码:2449 / 2454
页数:6
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