β-Hydroxyalkylation of sterically hindered phenols with epoxides in acid medium
作者:A. P. Krysin、S. A. Amitina、T. G. Egorova、V. G. Vasiliev
DOI:10.1134/s1070363211020125
日期:2011.2
HPLC-MS method the directions of the side reactions were explored. The method has been successfully tested in a pilot installation. With 2,6-dimethylphenol instead of 2,6-di-tert-butylphenol a sharp increase occurs in the content of ethers in the reaction product. With epichlorohydrin, 2,6-di-tert-butylphenol affords a product, which is easily converted into an epoxide containing a sterically hindered phenol
Development of a one-stage synthesis of 2,6-di-tert-4-ethylbutylphenol from 2,6-di-tert-butylphenol
作者:A. P. Krysin、L. M. Pokrovskii
DOI:10.1134/s1070363208090144
日期:2008.9
Investigation of the catalyzed reaction of 2,6-di-tert-butylphenol with ethanol, ethylene glycol, oligomeric glycols, and paraldehyde in a strongly basic medium permitted to develop a technologically suitable procedure for manufacture of 2,6-di-tert-4-ethyl-butylphenol, used in the synthesis of Antioxidant-425.