PENTACYCLIC LIQUID CRYSTAL COMPOUND HAVING CF<SB>2</SB>O BONDING GROUP, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY
申请人:Chisso Corporation
公开号:EP2116522A1
公开(公告)日:2009-11-11
The invention provides a five-ring liquid crystal compound having a CF2O bonding group as a new compound having a general physical properties necessary for compounds, stability to heat, light and so forth, a wide temperature range of liquid crystal phases, a high clearing point, a good compatibility with other compounds, a large dielectric anisotropy and refractive index anisotropy, and an especially high clearing point and an especially large refractive index anisotropy, and provides a liquid crystal composition and a liquid crystal display device.
BORONIC ACIDS AND ESTERS AS INHIBITORS OF FATTY ACID AMIDE HYDROLASE
申请人:Infinity Pharmaceuticals, Inc.
公开号:EP2073816B1
公开(公告)日:2011-09-14
<i>meta</i>-C–H arylation of fluoroarenes <i>via</i> traceless directing group relay strategy
作者:Marc Font、Andrew R. A. Spencer、Igor Larrosa
DOI:10.1039/c8sc02417k
日期:——
several methods for the ortho selective arylation of fluoroarenes, meta-functionalisation has never been achieved. We report a new methodology, based on the traceless directing group relay concept, leading to the first meta-selective (hetero)arylation of fluoroarenes. In this strategy, CO2 is introduced as a transient directing group, to control a Pd-catalysedarylation meta to the fluoro functionality,