[EN] PROCESS FOR PREPARING FLUORINE-CONTAINING OLEFIN<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UNE OLÉFINE CONTENANT DU FLUOR
申请人:DAIKIN IND LTD
公开号:WO2010087465A1
公开(公告)日:2010-08-05
The present invention provides a process for preparing a fluorine-containing olefin represented by Formula (2): R1CF=CH(R2) wherein R1 is F, H, F(CF2)n-(n is an integer ranging from 1 to 10) or H(CF2)m- (m is an integer ranging from 1 to 10) and R2 is H, F(CF2)n- (n is an integer ranging from 1 to 10) or H(CF2)m- (m is an integer ranging from 1 to 10), the process including a step of reacting a fluorine-containing alcohol represented by Formula (1): R1CF2CH(R2)OH, wherein R1 and R2are the same as above, with a reducing gas in the presence of a specific metal oxide. According to the process of the invention, a desired fluorine-containing olefin can be produced with high selectivity in a single reaction step using a fluorine-containing alcohol as a raw material.
There is provided a method for producing a cyclopropanecarboxylate of formula (1):
1
which comprises contacting
a cyclopropanecarboxylate of formula (2):
2
with a monohydroxy compound of formula (3):
R
7
OH (3)
in the presence of a lithium compound of formula (4):
R
8
OLi (4),
wherein R
1
, R
2
, R
3
, R
4
and R
5
each independently represent
a hydrogen atom, a halogen atom,
a substituted or unsubstituted alkyl group,
a substituted or unsubstituted alkenyl group, or
a substituted or unsubstituted aryl group;
R
6
represents an alkyl group having 1 to 10 carbon atoms or
a substituted or unsubstituted phenyl group;
R
7
and R
8
do not simultaneously represent the same and each independently represent
a substituted or unsubstituted alkyl group, or
a substituted or unsubstituted aryl group.
提供了一种生产公式(1)环丙烷甲酸酯的方法:
1
该方法包括接触
一种公式(2)的环丙烷甲酸酯:
2
与一种公式(3)的单羟基化合物:
R
7
OH (3)
在公式(4)的锂化合物存在下:
R
8
OLi (4),
其中R
1
,R
2
,R
3
,R
4
和R
5
每个独立代表
一个氢原子,一个卤素原子,
一个取代或不取代的烷基团,
一个取代或不取代的烯丙基团,或
一个取代或不取代的芳基团;
R
6
代表一个有1到10个碳原子的烷基团或
一个取代或不取代的苯基团;
R
7
和R
8
不同时代表相同的,且每个独立代表
一个取代或不取代的烷基团,或
一个取代或不取代的芳基团。
Process for producing cyclopropanecarboxylates
申请人:——
公开号:US20020151741A1
公开(公告)日:2002-10-17
There is disclosed a process process for producing a cyclopropanecarboxylate of formula (1):
1
which process comprises reacting cyclopropanecarboxylic acid of formula (2):
2
with a monohydroxy compound of formula (3):
R
6
OH (3),
in the presence of a catalyst compound comprising an element of to Group 4 of the Periodic Table of Elements.
Materials for inducing alignment in liquid crystal and liquid crystal displays
申请人:——
公开号:US20010039361A1
公开(公告)日:2001-11-08
The present invention provides novel aromatic diamines useful in preparing polyimides for optical alignment layers in liquid crystal displays. The novel compositions comprise side-chains general formula I
-L
1
-D-L
2
-C
f
wherein D comprises 1 to 4 carbon-carbon double bonds, C
f
is a monovalent C
4
to C
20
fluorocarbon radical and L
1
and L
2
are linking groups.
本发明提供了一种新型芳香二胺,用于制备液晶显示器中的光学调向层的聚酰亚胺。这种新型组合物包括侧链通式I
-L
1
-D-L
2
-C
f
其中D包括1至4个碳-碳双键,C
f
是一种一价的C
4
至C
20
氟碳基团,L
1
和L
2
是连接基团。
Process for Producing 3-(2-Cyano-1-propenyl)-2,2- Dimethylcyclopropanecarboxylic Acid or Salt Thereof
申请人:Uekawa Toru
公开号:US20120016150A1
公开(公告)日:2012-01-19
A process for producing comprising reacting a 3-formyl-2,2-dimethylcyclopropanecarboxylate and propionitrile in the presence of a base to obtain 3-(2-cyano-1-propenyl)-2,2-dimethylcyclopropanecarboxylic acid or its salt.