Oxygenation of 2,6-di-t-butylphenols bearing electron-withdrawing group at 4-position mediated by Co(II)-schiff base complex
作者:A. Nishinaga、T. Shimizu、T. Matsuura
DOI:10.1016/s0040-4039(01)92484-0
日期:——
4-Acyl-2,6-di-t-butylphenols except 3,5-di-t-butyl-4-hydroxybenzaldehyde were oxygenated in the presence of Co(Salpr) exclusively at the ortho position to give the corresponding 3,5-di-t-butyl-6-hydroperoxy-2,4-cyclohexadienone derivatives in quantitative yield.
CONSTRUCTION AND SCREENING OF SOLUTION-PHASE DERIVED LIBRARY OF FENBUFEN AND ETHACRYNIC ACID
申请人:Yu Chung-Shan
公开号:US20110306668A1
公开(公告)日:2011-12-15
A process for synthesizing and screening solution phase derived libraries of fenbufen and ethacrynic acid is provided in the present invention. Compounds in the present invention having cytotoxicities are useful for a variety of therapeutic applications.
Iodide as an Activating Agent for Acid Chlorides in Acylation Reactions
作者:Russell J. Wakeham、James E. Taylor、Steven D. Bull、James A. Morris、Jonathan M. J. Williams
DOI:10.1021/ol400035f
日期:2013.2.1
Acid chlorides can be activated using a simple iodide source to undergo nucleophilic attack from a variety of relatively weak nucleophiles. These include Friedel–Crafts acylation of N-methylpyrroles, N-acylation of sulfonamides, and acylation reactions of hindered phenol derivatives. The reaction is believed to proceed through a transient acidiodide intermediate.