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Process Development of 4,4`-Bis(2-benzoxazolyl)stilbene from Recyclable Source MFB
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  • Journal title : Applied Chemistry for Engineering
  • Volume 27, Issue 2,  2016, pp.195-198
  • Publisher : The Korean Society of Industrial and Engineering Chemistry
  • DOI : 10.14478/ace.2016.1012
 Title & Authors
Process Development of 4,4`-Bis(2-benzoxazolyl)stilbene from Recyclable Source MFB
Ryu, Young; Kim, Jong Cheon; Ham, Mi Jeong; Kim, Seok Chan;
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 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;
 Language
Korean
 Cited by
 References
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