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    • 33. 发明授权
    • Ferroelectric liquid crystal device and liquid crystal apparatus using it
    • 铁电液晶装置及其使用的液晶装置
    • US5573703A
    • 1996-11-12
    • US320525
    • 1994-10-11
    • Masahiro TeradaShosei MoriMasataka Yamashita
    • Masahiro TeradaShosei MoriMasataka Yamashita
    • G02F1/1337C09K19/02C09K19/34G02F1/141C09K19/52C09K19/20G02F1/15
    • C09K19/0225C09K19/34G02F1/1416
    • A ferroelectric liquid crystal device comprises:a pair of substrates comprising electrodes for applying a voltage, the pair of substrates having been subjected to a uniaxial orientation treatment, and being oriented at a distance opposite to each other such that the uniaxial orientation axes cross each other at a predetermined angle; the display device further comprising a liquid crystal material disposed between the exhibiting at least two stable states and pair of substrates, the liquid crystal material having a cone angle, a pretilt angle, a tilt angle and an apparent tilt angle, wherein:the liquid crystal material having an orientation state which satisfies the conditions represented by.THETA. .THETA..sub..alpha. >.THETA./2 in which .THETA. denotes the cone angle, .alpha. denotes the pretilt angle, .delta. denotes the tilt angle and .THETA..sub..alpha. denotes the apparent tilt angle,wherein the phase of the liquid crystal changes from isotropic phase via cholesteric phase and smectic A phase to chiral smectic C phase as the liquid crystal cools from a high temperature and the liquid crystal has a temperature range in which the cholesteric phase and the smectic A phase exist at the same time.
    • 铁电液晶装置包括:一对基板,包括用于施加电压的电极,所述一对基板经过单轴取向处理,并且以彼此相对的距离取向,使得单轴取向轴彼此交叉 以预定角度; 所述显示装置还包括设置在显示至少两个稳定状态和一对基板之间的液晶材料,所述液晶材料具有锥角,预倾角,倾斜角和视在倾斜角,其中:所述液晶 具有满足由THETA表示锥形角度的THETA <α+δ,Δα和THETA> THETAα> THETA / 2表示的条件的取向状态的材料α表示预倾角,delta表示倾斜角, THETAα表示视在倾斜角,其中当液晶从高温冷却时,液晶的相位从各向同性相通过胆甾醇相和近晶A相变为手性近晶C相,液晶的温度范围为 胆甾醇相和近晶A相同时存在。
    • 40. 发明申请
    • BIS-PHOSPHATE COMPOUND AND ASYMMETRIC REACTION USING THE SAME
    • 使用相同的双磷酸盐化合物和不对称反应
    • US20120330038A1
    • 2012-12-27
    • US13583875
    • 2011-03-08
    • Masahiro TeradaNorie MomiyamaTohru Konno
    • Masahiro TeradaNorie MomiyamaTohru Konno
    • C07F9/6574C07D307/58C07C269/06
    • C07B53/00C07C231/18C07C269/06C07C2601/16C07D307/58C07F9/65746C07C271/24C07C271/16C07C233/76
    • A novel bis-phosphate compound is provided which can be applied to a wide range of reactive substrates and reactions as an asymmetric reaction catalyst and can realize an asymmetric reaction affording a high yield and a high enantiomeric excess. The bis-phosphate compound has a tetraaryl skeleton represented by General Formula (1). In an asymmetric reaction, an amidodiene and an unsaturated aldehyde compound are reacted with each other in the presence of the optically active bis-phosphate compound to give an optically active amidoaldehyde. The invention allows a reaction such as an asymmetric Diels-Alder reaction to proceed efficiently, which has been difficult with conventional mono-phosphate compounds. Thus, the invention enables an industrially feasible method for the production of optically active amidoaldehydes, optically active β-amino acid derivatives, optically active diamine compounds, optically active pyrrolidine derivatives and optically active dihydropyran derivatives which are useful as products such as medicines, agricultural chemicals and chemical products as well as synthesis intermediates for such products.
    • 提供了一种新型的双磷酸化合物,其可以应用于广泛的反应性底物和作为不对称反应催化剂的反应,并且可以实现提供高产率和高对映异构体过量的不对称反应。 双磷酸化合物具有由通式(1)表示的四芳基骨架。 在不对称反应中,酰胺二烯和不饱和醛化合物在光学活性双磷酸酯化合物的存在下彼此反应,得到光学活性的酰胺醛。 本发明允许诸如不对称Diels-Alder反应的反应有效地进行,这对于常规的单磷酸酯化合物是困难的。 因此,本发明使得工业上可行的方法可用于生产光学活性酰胺醛,光学活性和聚氨基酸衍生物,光学活性二胺化合物,光学活性吡咯烷衍生物和光学活性二氢吡喃衍生物,其可用作药物,农业 化学品和化学产品以及此类产品的合成中间体。