Regioselective Synthesis of Alkylarenes by Two-Step<i>ipso</i>-Substitution of Aromatic Dicarboxylic Acids
作者:Andrea Bramborg、Torsten Linker
DOI:10.1002/ejoc.201200823
日期:2012.10
A strategy for the regioselective alkylation of arenes was developed, starting from commercially available and inexpensive terephthalic acid or naphthalene-1,4-dicarboxylic acid. The method entails a formal ipso-substitution of the carboxylate groups by a sequence of reductive alkylation under Birch conditions and subsequent acid-mediated rearomatization with loss of carbon monoxide and carbon dioxide
UNDERLAYER FILM-FORMING COMPOSITION AND PATTERN FORMING PROCESS
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20140363955A1
公开(公告)日:2014-12-11
In lithography, a composition comprising a novolak resin comprising recurring units derived from a phenolphthalein, Phenol Red, Cresolphthalein, Cresol Red, or Thymolphthalein is used to form a photoresist underlayer film. The underlayer film is strippable in alkaline water, without causing damage to ion-implanted Si substrates or SiO
2
substrates.
PERIPHERALLY-ACTING CANNABINOID RECEPTOR AGONISTS FOR CHRONIC PAIN
申请人:The Regents of the University of California
公开号:US20170240521A1
公开(公告)日:2017-08-24
Peripherally acting cannabinoid agonist compounds, pharmaceutical compositions, and methods of using them are presented.