109252-41-7Relevant academic research and scientific papers
Novel benzoxazine and synthesis method thereof
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Paragraph 0017; 0056-0058, (2021/09/26)
The invention discloses a novel benzoxazine and a synthesis method thereof, and belongs to the technical field of chemical synthesis. The synthesis method comprises the following steps: mixing bisphenol A (BPA) with trifluoroacetic acid, heating and react
PROCESS FOR THE MANUFACTURE OF POLYPHENOLS
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Page/Page column 7, (2009/06/27)
An improved process for the manufacture of a polyphenol compound such as bisphenol-A by introducing into a reaction zone a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter comprising bismethylthiopropane added to the reaction system in certain specific locations, and reacting the ingredients within the reaction zone in the presence of an acid catalyst.
IMPROVED PROCESS FOR THE MANUFACTURE OF POLYPHENOLS
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Page/Page column 20-21, (2008/06/13)
An improved process for the manufacture of a polyphenol compound such as bisphenol-A by introducing into a reaction zone a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter comprising bismethylthiopropane added to the reaction system in certain specific locations, and reacting the ingredients within the reaction zone in the presence of an acid catalyst.
A practical synthesis and estrogenic activity of 5-hydroxy-1-(4′- hydroxyphenyl)-1,3,3-trimethylindan, a contaminant in industrial grade bisphenol A
Terasaki, Masanori,Shiraishi, Fujio,Nishikawa, Tomohiro,Morita, Masatoshi,Makino, Masakazu
, p. 188 - 189 (2007/10/03)
A practical synthesis of 5-hydroxy-1-(4′-hydroxyphenyl)-1,3,3- trimethylindan was achieved from α-methylstyrene. The starting compound was dimerized in the presence of trifluoroacetic acid to produce 1-phenyl-1,3,3-trimethylindan. Aromatic nitration of the phenylindane was carried out using a mixture of nitric acid and acetic anhydride. The nitro group was then converted to hydroxyl via reduction and a diazonium salt sequence to form 5-hydroxy-1-(4′-hydroxyphenyl)-1,3,3-trimethylindan. The estrogenicity of the product was 8.7 times that of BPA. Our finding has demonstrated the endocrine-disrupting properties of the product. Copyright
