A process of the production of a bisphenol compound comprising:
a step for reacting a phenolic compound (a) with at least one compound (b) selected from the group consisting of dialkenylbenzene compounds, bis(hydroxyalkyl)benzene compounds and (hydroxyalkyl)-alkenylbenzene compounds or at least one compound (c) selected from the group consisting of monoalkenylphenolic compounds and mono(hydroxyalkyl)phenolic compounds in the presence of an acidic catalyst to obtain a reaction mixture containing said bisphenol compound,
a step for neutralizing the reaction mixture with an anion exchange resin,
a step for removing a remaining phenolic compound from the reaction mixture to concentrate the neutralized reaction mixture, and
a step for isolating the bisphenol compound from the resulting concentrated mixture.
This process enables to produce a bisphenol compound, which is useful for preparing raw materials of thermoplastic polymers, surface-active agents and stabilizers.
Ground state oxygen in synthesis of cyclic peroxides. Part 1: Benzo fused ketals
作者:Junwon Kim、Hong Bin Li、Andrew S. Rosenthal、Dongpei Sang、Theresa A. Shapiro、Mario D. Bachi、Gary H. Posner
DOI:10.1016/j.tet.2006.02.008
日期:2006.4
acetophenones directly into cyclic peroxy hemiketal products with three new bonds. Starting with 4-t-butylbenzenethiol, this TOCO process proceeds reproducibly on gram scale in 86% yield. Hemiketal→ketal and sulfide→sulfone transformations finally provide a series of sulfonyl cyclic peroxy ketals. The in vitro antimalarial activities of some of these structurally simple benzo-fused cyclic peroxides are reported