摘要:
Substituted phenylpyrrolecarboxamide compounds such as those represented by Formula A can be used in the treatment of HIV infection and related conditions.
摘要:
Substituted phenylpyrrolecarboxamide compounds such as those represented by Formula A can be used in the treatment of HIV infection and related conditions.
摘要:
Substituted phenylpyrrolecarboxamide compounds such as those represented by Formula A can be used in the treatment of HIV infection and related conditions.
摘要:
The invention describes a process for the purification of iodinated aryl compounds where the purification is performed by continuous crystallization of a crude product in a solvent with removal of at least a fraction of the solvent. The continuous crystallization process is performed in one or more crystallizers at the boiling point of the content of the crystallizer.
摘要:
A method for recovering and reusing a ring-halogenation catalyst comprises: (A) contacting an aromatic compound with chlorine or bromine in the presence of a catalyst composition, where the catalyst composition comprises at least one salt comprising a Group 4-13 metal, a lanthanide metal, or an actinide metal; and at least one organic counterion derived from an organic acid having a pKa relative to water of 0 or greater; and at least one organic sulfur compound; to form a first product mixture comprising a monochloro or a monobromo aromatic compound and a Group 4-13 metal halide, a lanthanide metal halide or an actinide metal halide; (B) separating the metal halide from the first product mixture; and (C) contacting at least a portion of the metal halide and an aromatic compound with chlorine or bromine, and at least one organic sulfur compound; to form a second product mixture comprising a monochloro or a monobromo aromatic compound and a Group 4-13 metal halide, a lanthanide metal halide or an actinide metal halide.ving a pKa relative to water of 0 or greater; and at least one organic sulfur compound.
摘要:
Disclosed is a novel fluorene derivative and an organic electronic device using the same. The organic electronic device has excellent efficiency, driving voltage, and a lifespan.
摘要:
A liquid crystal is provided, which can be used in a liquid crystal display (LCD) to provide an LCD exhibiting a good transmittance. The liquid crystal according to the invention has the following properties:(i) a dielectric anisotropy (Δε) ranging from about −2.5 to about −5;(ii) a splay elastic constant (K11) ranging from about 1.1×10−11 N to about 1.6×10−11 N; (iii) a bend elastic constant (K33) ranging from about 1.1×10−11 N to about 1.6×10−11 N; and(iv) Δε, K11 (N) and K33 (N) conforming to the following equation: K 11 + K 33 10 × Δ ɛ
摘要:
Provided are a liquid-crystal compound and a liquid-crystal composition containing the compound, of which the advantages are that they show nematic hybrid orientation on a rubbed TAC substrate, they are polymerizable in open air and they readily give a polymer having a high degree of polymerization even when exposed to a relatively small total quantity of light. The films formed by photopolymerizing them keep nematic hybrid orientation. The compound is represented by formula (1): wherein R1 is a hydrogen or an alkyl; R2 is a hydrogen, —OCF3, etc.; A1 is a 1,4-phenylene, etc.; A2 and A3 are independently a 1,4-cyclohexylene, a 1,4-phenylene, etc.; X1 is a single bond, —O—, etc.; X2 and X3 are independently a single bond, —COO—, —C≡C—, —CONH—, etc.; m is an integer of from 0 to 20; and n is 1 or 0.
摘要翻译:提供了含有该化合物的液晶化合物和液晶组合物,其优点是在摩擦TAC基材上显示向列混合取向,它们在露天可聚合,并且容易得到具有高度的聚合物 甚至当暴露于相对较小的总光量时。 通过光聚合形成的膜保持向列混合取向。 该化合物由式(1)表示:其中R 1是氢或烷基; R 2是氢,-OCF 3等; A 1是1,4-亚苯基等; A< 2>和< 3> 3独立地是1,4-亚环己基,1,4-亚苯基等; X 1是单键,-O-等; X 2和X 3独立地是单键,-COO-,-C≡C-,-CONH-等; m为0〜20的整数, n为1或0。
摘要:
The present invention relates to cyclopenta[a]naphthalene derivatives of the general formulae I to V in which B, Z, A, n, R, X1, X1a, X1b, X2, X3, E1 and E2 are as defined in the claims, to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one of these cyclopenta[a]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline media.
摘要:
Compounds of the formula (I) in which R1, R2, p, q, G and X are each as defined in the description, use of compounds of the formula (I) in liquid-crystal mixtures, liquid-crystal mixture comprising one or more compounds of the formula (I), and a liquid-crystal display comprising an inventive liquid-crystal mixture.