2272-33-5Relevant academic research and scientific papers
Novel stilbene-triazine symmetrical optical brighteners: Synthesis and applications
Saeed, Aamer,Shabir, Ghulam,Batool, Iram
, p. 1119 - 1127 (2014/07/22)
A series of new high light fastness, hot pressing fastness optical brighteners was efficiently synthesized by a three-step approach involving the successive replacement of the three chloro groups of 2,4,6-trichloro-1,3,5- triazine under different conditions of temperature and pH. Thus, 2,4,6-trichloro-1,3,5-triazine was treated with different anilines and the resulting dichlorotriazinyl intermediates (3a-I) were further condensed with 4,4-diaminostilbene-2,2′-disulfonic acid to afford bis-monochlorotriazine (5a-I) followed by nucleophilic substitution with ethanolamine to furnish the final hybrid brighteners (7a-I). All of the newly synthesized compounds were characterized by Fourier-Transform Infrared (FT-IR), UV-visible absorption, NMR spectroscopy and the elemental analyses. The synthesized optical brighteners were also assessed for their efficacy as fluorescent brightening agents.
N-(2,4-dihalo-S-triazin-6-yl)-ureas and process for their manufacture
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, (2008/06/13)
A process for the manufacture of N-(2,4-dihalo-s-triazin-6-yl)-ureas of the formula SPC1 Wherein X represents halogen, R represents alkyl, aryl or hydrogen and Y represents hydrogen or the sulphonic acid group, which comprises reacting a dihalo-amino-s-triazine of the formula SPC2 Wherein X and R have the meanings assigned to them hereinbefore, with chloro-sulphonylisocyanate and hydrolysing the resulting reaction product. The compounds of the formula (1) are suitable as starting products for the manufacture of reactive dyes, fluorescent whiteners or agro - chemicals.
