氧化铋(III) | 12640-40-3

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 后过渡金属有机物
• 中文名称: 氧化铋(III)
• 英文名称: Bismuth-oxygen
• 英文别名: oxobismuth
• CAS: 12640-40-3
• 化学式: BiO
• 分子量: 224.98
• InChiKey: CJJMLLCUQDSZIZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.5
• 重原子数：
  2
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  4-Methylthiophenyl-4'-methoxy-3',5'-dimethylphenyl benzoin 、 氧化铋(III) 在 4-Methylthiophenyl4'-methoxy-3',5'-dimethylphenyl benzil 作用下， 以 溶剂黄146 为溶剂， 以There was obtained 1.5 g (95%) of the desired benzil as a crystalline solid的产率得到4-Methylthiophenyl4'-methoxy-3',5'-dimethylphenyl benzil
  参考文献：
  名称：

  4,5-substituted imidazolyl compounds for the treatment of inflammation

  摘要：

  描述了一类用于治疗炎症和炎症相关疾病的化合物。特别感兴趣的化合物由以下式子定义：其中R1选自较低的烷基、较低的卤代烷基、较低的羟基烷基、较低的烷氧基烷基、较低的烯氧基烷基、巯基、较低的烷基羰基、较低的卤代烷基羰基、苯基羰基、较低的芳基烷基羰基、较低的芳基烯基、较低的芳氧基烷基、较低的芳基氧基烷基、较低的芳基磺酰基、较低的芳基烷基磺酰基、较低的芳基硫代烷基、较低的杂芳基烷基硫代烷基和选自2-噻吩基、2-呋喃基、3-呋喃基、2-吡啶基、4-吡啶基和2-苯并呋喃基的杂芳基；其中R2和R3独立选自杂芳基、环烷基和芳基，其中杂芳基、环烷基和芳基基团在可取代位置上用一个或多个基团选自氢、卤、较低的烷基硫、较低的烷基亚砜、较低的烷基磺酰基、氨基磺酰基、较低的烷基、氰基、羧基、较低的烷氧羰基、较低的卤代烷基、羟基、较低的烷氧基、较低的羟基烷基、较低的卤代烷氧基、氨基、较低的烷基氨基、苯基氨基和硝基；其中R4选自氢、较低的烷基和酰基；或其药学上可接受的盐。

  公开号：

  US06426360B1

文献信息

• Benzenesulfonamide subtituted imidazolyl compounds for the treatment of
  申请人：——

  公开号：US05620999A1

  公开（公告）日：1997-04-15

  A class of imidazolyl compounds is described for use in treating inflammation and inflammation-related disorders. Compounds of particular interest are defined by Formula II ##STR1## wherein R.sup.1 is selected from lower alkyl, lower haloalkyl, lower hydroxyalkyl, lower aralkenyl, lower aryloxyalkyl, lower arylthioalkyl and heteroaryl; wherein R.sup.3 is selected from lower alkyl and amino; and wherein R.sup.4 is one or more radicals selected from hydrido, halo, lower alkyl and lower alkoxy; or where R.sup.4 together with the phenyl radical forms naphthyl or benzodioxolyl; provided R.sup.1 is not lower alkyl when R.sup.3 is methyl and when R.sup.4 is hydrido, methyl, methoxy or chloro; or a pharmaceutically-acceptable salt thereof.

  本文描述了一类咪唑基化合物，用于治疗炎症和与炎症相关的疾病。特别感兴趣的化合物由公式II定义，其中R.sup.1从较低的烷基、较低的卤代烷基、较低的羟基烷基、较低的芳基烯烃基、较低的芳氧基烷基、较低的芳硫基烷基和杂环芳基中选择；其中R.sup.3从较低的烷基和氨基中选择；R.sup.4是一个或多个由氢、卤素、较低的烷基和较低的烷氧基中选择的基团；或者R.sup.4与苯基一起形成萘基或苯并二氧杂环基；在R.sup.3是甲基且R.sup.4是氢、甲基、甲氧基或氯时，R.sup.1不是较低的烷基；或其药用盐。
• Compositions modifying ballistic properties and propellants containing
  申请人：Societe Nationale des Poudres et Explosifs

  公开号：US05639987A1

  公开（公告）日：1997-06-17

  The present invention lies in the field of compositions which modify the ballistic properties of solid propellants and in that of the double-base solid propellants containing these compositions. Various lead compounds are known to be effective in this function, but these compounds are toxic; the problem which is solved by the present invention is to replace these lead compounds with nontoxic compounds which furthermore do not impair other properties and the performance values of the propellants. The modifying compounds are chosen from the group consisting of .beta.-resorcylates and .gamma.-resorcylates. The invention also relates to processes for the synthesis of some of these products. Finally, it relates to double-base solid propellants containing these compounds.

  本发明涉及修改固体推进剂的弹道特性的组合物领域，以及含有这些组合物的双基固体推进剂领域。已知各种铅化合物在此功能上非常有效，但这些化合物有毒；本发明解决的问题是用无毒化合物替换这些铅化合物，而且不会影响其他性质和推进剂的性能值。这些修改化合物从羟基苯甲酸酯组成的β-酰氧基和γ-酰氧基中选择。本发明还涉及一些这些产品的合成过程。最后，涉及含有这些化合物的双基固体推进剂。
• Preparation of 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one
  申请人：BASF Aktiengesellschaft

  公开号：US04290960A1

  公开（公告）日：1981-09-22

  A process for the preparation of the sought-after scent 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one, and novel intermediates for the preparation of this compound. 2,5-Dimethyl-4-hydroxy-2,3-dihydrofuran-3-one is prepared by first epoxidizing hex-3-ene-2,5-diol in the liquid phase with hydrogen peroxide to give the novel compound 3,4-epoxy-hexane-2,5-diol, which at 40.degree.-280.degree. C. is converted, by means of a catalytic amount of an acid, to the novel compound 2,5-dimethyl-3,4-dihydroxy-tetrahydro-furan. The latter is dehydrogenated by means of oxygen over a silver catalyst or copper catalyst to give the nove compound 2,5-dimethyl-4-hydroxy-tetrahydrofuran-3-one, which is oxidized by means of bismuth oxide, in concentrated acetic acid solution, to give the desired compound 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one.

  一种制备2,5-二甲基-4-羟基-2,3-二氢呋喃-3-酮的方法，以及制备该化合物的新型中间体。首先，在液相中使用过氧化氢对己-3-烯-2,5-二醇进行环氧化反应，得到新型化合物3,4-环氧己烷-2,5-二醇，然后在40℃-280℃下通过少量酸的催化作用将其转化为新型化合物2,5-二甲基-3,4-二羟基四氢呋喃。后者经过银催化剂或铜催化剂的氧化脱氢作用得到新型化合物2,5-二甲基-4-羟基四氢呋喃-3-酮，然后在浓乙酸溶液中通过铋氧化物的氧化反应得到所需的化合物2,5-二甲基-4-羟基-2,3-二氢呋喃-3-酮。
• Recovery process for wastes containing hexavalent chromium
  申请人：——

  公开号：US20030143137A1

  公开（公告）日：2003-07-31

  A process for recovery of hexavalent chromium from waste streams. The method includes providing a waste stream containing hexavalent chromium, reacting a soluble non-toxic precipitating reagent with the hexavalent chromium to form an insoluble precipitating reagent-chromate precipitate, and recovering the insoluble precipitating reagent-chromate precipitate. It may optionally include reacting the insoluble precipitating reagent-chromate precipitate with an acidic solution to form an insoluble precipitating reagent precipitate and a soluble hexavalent chromium compound, and recovering the soluble hexavalent chromium compound. The process may also include reacting the insoluble precipitating reagent precipitate with a solubilizing reagent to form the soluble non-toxic precipitating reagent.

  一种从废水中回收六价铬的方法。该方法包括提供一个含有六价铬的废水流，将可溶的无毒沉淀试剂与六价铬反应，形成不溶性的沉淀试剂-铬酸盐沉淀物，并回收不溶性的沉淀试剂-铬酸盐沉淀物。该方法还可以选择性地将不溶性的沉淀试剂-铬酸盐沉淀物与酸性溶液反应，形成不溶性的沉淀试剂沉淀物和可溶性的六价铬化合物，并回收可溶性的六价铬化合物。该过程还可以包括将不溶性的沉淀试剂沉淀物与溶解试剂反应，形成可溶的无毒沉淀试剂。
• Zinc oxide ceramics and method for producing the same and zinc oxide
  申请人：Matsushita Electric Industrial Co., Ltd.

  公开号：US05739742A1

  公开（公告）日：1998-04-14

  A zinc oxide ceramic and a method for producing the zinc oxide ceramics are provided wherein a zinc oxide varistor for a high voltage which has excellent electric characteristics and great reliability for DC loading and surge can be produced in high yield by performing sintering at a temperature of 750.degree. to 1050.degree. C. At least one of B.sub.2 O.sub.3, Cr.sub.2 O.sub.3, GeO.sub.2, LaO.sub.3, MgO, Nb.sub.2 O.sub.5, Nd.sub.2 O.sub.3, PbO, PrO, Sb.sub.2 O.sub.3, SiO.sub.2, SnO.sub.2, Ta.sub.2 O.sub.5, WO.sub.3 and Y.sub.2 O.sub.3 powders and a Bi.sub.2 O.sub.3 powder are mixed. A mixture thus obtained is heat treated at a temperature of 400.degree. to 700.degree. C. and ground to prepare a synthetic powder. 0.5 to 20 parts by weight of the synthetic powder and 0.1 to 5.0 parts by weight of at least one of CoO, MnO.sub.2 and NiO powders are added and ground for 100 parts by weight of a zinc oxide powder. A binder is added to the ground powder to form a sheet. A silver paste is applied to the surface of the sheet to laminate four sheets. A lamination is integrally sintered at a temperature of 840.degree. C. A zinc oxide varistor of a lamination type comprises an internal silver electrode, an internal silver counter electrode, an effective layer, a noneffective layer, and an external silver electrode.

  提供了一种氧化锌陶瓷和制备氧化锌陶瓷的方法，其中可以在750°C至1050°C的温度下烧结，生产出具有优异电学特性和直流负载和浪涌方面极高可靠性的高压氧化锌压敏电阻器，并且可以高产率生产。混合至少一种B.sub.2 O.sub.3、Cr.sub.2 O.sub.3、GeO.sub.2、LaO.sub.3、MgO、Nb.sub.2 O.sub.5、Nd.sub.2 O.sub.3、PbO、PrO、Sb.sub.2 O.sub.3、SiO.sub.2、SnO.sub.2、Ta.sub.2 O.sub.5、WO.sub.3和Y.sub.2 O.sub.3粉末和Bi.sub.2 O.sub.3粉末，然后将所得混合物在400°C至700°C的温度下热处理并研磨以准备合成粉末。对于100份氧化锌粉末，添加0.5至20份合成粉末和0.1至5.0份CoO、MnO.sub.2和NiO粉末中的至少一种，然后研磨。向研磨后的粉末中添加粘合剂以形成薄片。将银浆涂在薄片表面上以层压四张薄片。在840°C的温度下整体烧结层压体。层压型氧化锌压敏电阻器包括内部银电极、内部银对电极、有效层、无效层和外部银电极。