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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 7
BKCSDE 34(7)
July 20, 2013 

 
Title
The Synthesis and Properties of Asymmetrically Substituted 4,4'-Bis(1,3,5-triazine-6- yl)diaminostilbene-2,2'-disulfonic Acid Derivatives as Fluorescent Brighteners [II]
Author
Jongkeun Jung, Yonghan Kang*
Keywords
Bistriazinylstilbene fluorescent brightening agents, 2,4,6-trichloro-1,3,5-triazine, Asymmetrical, Whiteness, Fastness
Abstract
In this work, the key intermediate, 4-amino-4'-(2-amino-4-anilino-1,3,5-triazine-6-yl)-aminostilbene-2,2'-disulfonic acid, was prepared from 4-(2-amino-4-anilino-1,3,5-triazine-6-yl)amino-4'-nitrostilbene-2,2'-disulfonate by using Tin(II) chloride as the reducing agent. Using this intermediate, nineteen new asymmetrically substituted bistriazinylstilbene fluorescent brightening agents were synthesized. Chemical structures of the obtained compounds 5a-s were analyzed by proton NMR spectrum. The physical properties of the new compounds 5a-s were characterized by fastness test and whiteness measurement test and the obtained data were compared to measurements obtained from CI 86.
Page
2131 - 2137
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