A General and Efficient Palladium-Catalyzed Alkoxycarbonylation of Phenols To Form Esters through In Situ Formed Aryl Nonaflates
作者:Xiao-Feng Wu、Helfried Neumann、Matthias Beller
DOI:10.1002/chem.201103797
日期:2012.3.26
Esters made easy! A general and efficient methodology for the palladium‐catalyzed alkoxycarbonylation of in situ formed aryl nonaflates has been developed (see scheme). Both homo‐ and cross‐esterifications are possible. DPPF=1,1′‐bis(diphenylphosphino)ferrocene.
Alignment layer composition, liquid crystal display including the alignment layer composition, and manufacturing method of the liquid crystal display
申请人:Samsung Display Co. Ltd.
公开号:US10745622B2
公开(公告)日:2020-08-18
An alignment layer composition including a copolymer of a dianhydride compound and a diamine compound, wherein the copolymer includes a repeating unit represented by Formula 1:
wherein each of Ar1 and Ar2 is independently a substituted or unsubstituted aromatic group comprising 6 to 30 carbon atoms, X is an electron donating group, and
is an ester group, wherein “*” indicates a point of attachment to the aromatic groups Ar1 and Ar2.
ALIGNMENT LAYER COMPOSITION, LIQUID CRYSTAL DISPLAY INCLUDING THE ALIGNMENT LAYER COMPOSITION, AND MANUFACTURING METHOD OF THE LIQUID CRYSTAL DISPLAY
申请人:Samsung Display Co. Ltd.
公开号:US20180148650A1
公开(公告)日:2018-05-31
An alignment layer composition including a copolymer of a dianhydride compound and a diamine compound, wherein the copolymer includes a repeating unit represented by Formula 1:
wherein each of Ar
1
and Ar
2
is independently a substituted or unsubstituted aromatic group comprising 6 to 30 carbon atoms, X is an electron donating group, and
is an ester group, wherein “*” indicates a point of attachment to the aromatic groups Ar
1
and Ar
2
.
COMPOUND, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:JNC CORPORATION
公开号:US20210071080A1
公开(公告)日:2021-03-11
Provided is a compound represented by formula (1) described below.
In formula (1), a and b are independently 0, 1 or 2, and expressions: 0≤a+b≤3 hold, ring A
1
, ring A
2
, ring A
3
and ring A
4
are independently 1,4-cyclohexylene, for example, Z
1
, Z
2
, Z
3
, Z
4
and Z
3
are independently a single bond, alkylene having 1 to 10 carbons, or the like, Sp
1
and Sp
2
are independently a single bond, alkylene having 1 to 10 carbons, or the like, and P
1
and P
2
are independently a specific polymerizable group.
COMPOSITION AND METAL INSULATING COVER MATERIAL
申请人:Mitsubishi Chemical Corporation
公开号:US20210324144A1
公开(公告)日:2021-10-21
A composition containing a solvent and a polyimide resin precursor and/or polyimide resin, wherein the polyimide resin precursor and/or polyimide resin includes a compound represented by Formula (0) below and/or a compound represented by Formula (0′) below, and a compound including a functional group that reacts with a terminally cyclized product of the compound represented by Formula (0) below and/or the compound represented by Formula (0′) below.
In Formula (0) and Formula (0′) above, R′ each independently represent a hydrogen atom or an alkyl group. R
a
represents a tetracarboxylic acid residue. R
b
represents a diamine residue. R
a
and/or R
b
includes one linking group including an active hydrogen and/or one or more and four or less substituents including an active hydrogen. p and q represent given integers.