Copper-catalyzed oxidative trifluoroethoxylation of aryl boronic acids with CF 3 CH 2 OH
作者:Ke Zhang、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1016/j.jfluchem.2016.07.008
日期:2017.4
A mild and efficient copper-catalyzed oxidative trifluoroethoxylation of aryl and heteroaryl boronicacids with CF3CH2OH has been developed. This protocol tolerates a range of functional groups, allowing access to a variety of aryl and heteroaryl trifluoroethyl ethers.
Liquid crystal aligning agent and liquid crystal display element
申请人:JSR CORPORATION
公开号:US20030087045A1
公开(公告)日:2003-05-08
The present invention provides a liquid crystal aligning agent which provides a liquid crystal alignment film having surface anchoring force and pretilt angle development stability by an optical aligning method.
The liquid crystal aligning agent comprises a polymer having a photo-crosslinkable structure a structure having at least one group selected from the group consisting of a fluorine-containing organic group, an alkyl group having 10 to 30 carbon atoms and alicyclic organic group having 10 to 30 carbon atoms and optionally, (C) a thermally crosslinkable structure.