Novel substituted naphthalene compounds and liquid crystal compositions containing same
申请人:MITSUI PETROCHEMICAL INDUSTRIES, LTD.
公开号:EP0332409A2
公开(公告)日:1989-09-13
In accordance with the present invention, there are provided substituted naphthalene compounds of formula [I].
wherein R¹ represents alkyl of 1-18 carbon atoms, R² represents alkyl of 1-18 carbon atoms, X is -OCH₂- or -CH₂CH₂-, and n is 0 or 1.
The invention also provides liquid crystal compositions containing a substituted naphthalene compound such as a compound of formula [I].
Naphthalene compound and liquid crystal composition containing the same
申请人:MITSUI PETROCHEMICAL INDUSTRIES, LTD.
公开号:EP0341922A2
公开(公告)日:1989-11-15
A naphthalene compound of formula (I) and a liquid crystal composition containing the same:
wherein X represents hydrogen or halogen, Y and Z independently represent a monovalent group selected from:
wherein W represents hydrogen or halogen, R represents an alkyl group having 6 to 18 carbon atoms, provided that at least one of Y and Z represents the optically active alkyl group of formula (II):
-(CH₂)n-*H-(CH₂)m-CH₃ (II)
wherein A is alkyl, alkoxy, halogen or fluoroalkyl, n is an integer of 0 to 3, m is an integer of 3 to 6, and *C represents an asymmetric carbon.
一种式(I)的萘化合物和含有该化合物的液晶组合物:
其中 X 代表氢或卤素,Y 和 Z 独立地代表选自下列各项的单价基团
其中 W 代表氢或卤素,R 代表具有 6 至 18 个碳原子的烷基,条件是 Y 和 Z 中至少有一个代表式(II)的光学活性烷基:
-(CH₂)n-*H-(CH₂)m-CH₃ (II)
其中 A 是烷基、烷氧基、卤素或氟烷基,n 是 0 至 3 的整数,m 是 3 至 6 的整数,*C 代表不对称碳。
IQBAL, RASHID;EL-HOSSADI, AWAD;HAMID, A., PAKISTAN J. SCI. AND IND. RES., 31,(1988) N 2, C. 102-103
作者:IQBAL, RASHID、EL-HOSSADI, AWAD、HAMID, A.
DOI:——
日期:——
Heterogeneous Palladium-Catalyzed Synthesis of Aromatic Ethers by Solvent-Free Dehydrogenative Aromatization: Mechanism, Scope, and Limitations Under Aerobic and Non-Aerobic Conditions
derivatives and alcohols, both non-aromatic precursors, aryl ethers could be synthesized in good yields and with good selectivities in the presence of a catalytic amount of Pd/C, in one step, without added solvent, in a reaction vessel open to air. For less reactive substrates, the addition of 1-octene in a closed system undernon-aerobicconditions improved the conversion. In addition, the catalyst could