Synthesis of new polymerizable liquid-crystal molecules
作者:Pascal Bezou、Annie Pacreau、Jean-Pierre Vairon
DOI:10.1016/0040-4039(95)00412-6
日期:1995.4
On the way to get a comparison between different side-chain liquid-crystalpolymers bearing the same lateral mesogenic group, in order to show the influence of the nature of the polymerbackbone on their thermal behaviors, we present here the synthesis of new liquid-crystal acrylate and methacrylate monomers.
Stereoselective Synthesis of Chiral 4-(1-Chloroalkyl)-β-Lactams Starting from Amino Acids and Their Transformation into Functionalized Chiral Azetidines and Pyrrolidines
作者:Stijn Dekeukeleire、Matthias D’hooghe、Karl W. Törnroos、Norbert De Kimpe
DOI:10.1021/jo101220q
日期:2010.9.3
α-chlorination procedures. The latter aldehydes proved to be useful starting materials for the stereoselective Staudinger synthesis of (3S,4S)-4-[(1S)-1-chloroalkyl]azetidin-2-ones in high diastereomeric ratios and good overall yields, which were used as chiral building blocks for the preparation of a number of azetidines and pyrrolidines.
A ferroelectric liquid-crystalline polymeric composition
申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP0310081A2
公开(公告)日:1989-04-05
The liquid-crystalline polymeric composition of the invention comprises (A) a non-liquid-crystalline polymeric compound and (B) a low-molecular liquid-crystalline compound each having a proton donor and/or a proton acceptor in the molecular structure and the low-molecular compound has a chiral smectic C phase. By virtue of these functional groups forming hydrogen bonds between the components, the liquid-crystalline polymeric composition of the invention is not a mere blend of the components liable to cause phase separation but is imparted with greatly increased stability and uniformity of the blend as well as responsivity of high speed.
本发明的液晶聚合物组合物包括(A)非液晶聚合物化合物和(B)低分子液晶化合物,每种化合物的分子结构中都有质子供体和/或质子受体,且低分子化合物具有手性 Smectic C 相。由于这些官能团在各组分之间形成氢键,本发明的液晶聚合物组合物不再是容易导致相分离的单纯组分混合物,而是大大提高了混合物的稳定性和均匀性以及高速响应性。
Polyphenyl-based ester compounds and liquid crystal compositions containing same
申请人:AJINOMOTO CO., INC.
公开号:EP0191600B1
公开(公告)日:1991-12-27
(R)-ALKYLOXIRANES OF HIGH ENANTIOMERIC PURITY FROM (S)-2-CHLOROALKANOIC ACIDS VIA (S)-2-CHLORO-1-ALKANOLS: (R)-METHYLOXIRANE