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http://dx.doi.org/10.14478/ace.2016.1012

Process Development of 4,4'-Bis(2-benzoxazolyl)stilbene from Recyclable Source MFB  

Ryu, Young (Department of Bio & Nano Chemistry, Kookmin University)
Kim, Jong Cheon (Department of Bio & Nano Chemistry, Kookmin University)
Ham, Mi Jeong (Department of Bio & Nano Chemistry, Kookmin University)
Kim, Seok Chan (Department of Bio & Nano Chemistry, Kookmin University)
Publication Information
Applied Chemistry for Engineering / v.27, no.2, 2016 , pp. 195-198 More about this Journal
Abstract
A total four-step synthetic process of high quality optical brightening agent 4,4'-bis(2-benzoxazolyl)stilbene (BBS) from methyl 4-formylbenzoate (MFB) was developed with 73% total yield. MFB is one of the main by-products in dimethyl terephthalate (DMT) production process. Our process involves the formation of 4,4'-stilbenedicarboxylate (2) obtained from the reaction of an aldehyde in MFB with ethyl 4-((diethoxyphosphoryl)methyl)benzoate (1) and the subsequent transformation to 4,4'-stilbenedicarbonyl chloride (3). In order to prepare benzoxazole ring in BBS, various solvents and catalysts were studied. The best solvent and catalyst were found to be 1,2,4-trichlorobenzene and boric acid, respectively suitable for mass production of BBS.
Keywords
methyl 4-formylbenzoate; recyclable source; DMT; optical brightening agent; 4,4'-bis(2-benzoxazolyl)stilbene;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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