1-甲基-1H-吡唑-3,4-二羧酸 | 10505-21-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 中文名称: 1-甲基-1H-吡唑-3,4-二羧酸
• 英文名称: 1-methylpyrazole-3,4-dicarboxylic acid
• 英文别名: 1-methyl-1H-pyrazole-3,4-dicarboxylic acid
• CAS: 10505-21-2
• 化学式: C₆H₆N₂O₄
• mdl: MFCD00464255
• 分子量: 170.125
• InChiKey: YWCVRVKQZHUWKX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.4
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.166
• 拓扑面积：
  92.4
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  ethyl 3-ethoxymethylene-2,4-dioxovalerate 在 氢氧化钾 、 sodium hydroxide 、 sodium hypochlorite 作用下， 以 乙醚 、 乙醇 、 水 为溶剂， 反应 7.0h， 生成 1-甲基-1H-吡唑-3,4-二羧酸
  参考文献：
  名称：

  Kurihara, Takushi; Uno, Toshiko; Sakamoto, Yasuhiko, Journal of Heterocyclic Chemistry, 1980, vol. 17, p. 231 - 233

  摘要：

  DOI：

文献信息

• COSMETIC OR DERMATOLOGICAL COMPOSITION COMPRISING A POLYMER BEARING JUNCTION GROUPS, AND COSMETIC TREATMENT PROCESS
  申请人：Chodorowski-Kimmes Sandrine

  公开号：US20100239509A1

  公开（公告）日：2010-09-23

  The present patent application relates to a cosmetic or dermatological composition comprising, in a cosmetically or dermatologically acceptable medium, a polymer comprising: (a) a polymer backbone that may be obtained by reaction: of a polyol comprising 3 to 6 hydroxyl groups; of a monocarboxylic acid containing 6 to 32 carbon atoms; of a polycarboxylic acid comprising at least two carboxylic groups COOH, and/or of a cyclic anhydride such as a polycarboxylic acid and/or of a lactone comprising at least one carboxylic group COOH; and (b) at least one junction group linked to the said polymer backbone and capable of establishing H bonds with one or more partner junction groups, each pairing of a junction group involving at least three H (hydrogen) bonds. The patent application also concerns a cosmetic treatment process using the said composition.

  本专利申请涉及一种化妆品或皮肤科学组合物，包括在化妆品或皮肤科学上可接受的介质中，包含以下聚合物的组合物：(a) 由以下反应得到的聚合物骨架：含有3至6个羟基的多元醇；含有6至32个碳原子的一元羧酸；至少含有两个羧基COOH的多元羧酸，和/或类似多元羧酸的环酐和/或至少含有一个羧基COOH的内酯；以及(b) 至少一个连接到所述聚合物骨架的连接基团，并能够与一个或多个配对连接基团建立H键，每个连接基团的配对涉及至少三个H（氢）键。该专利申请还涉及使用所述组合物的化妆品处理过程。
• COMPOSITION COMPRISING A POLYCONDENSATE, METHOD OF TREATMENT, POLYCONDENSATE, AND METHOD OF PREPARATION
  申请人：GIUSTINIANI Pascal

  公开号：US20090028807A1

  公开（公告）日：2009-01-29

  The present application relates to a cosmetic or pharmaceutical, in particular lipstick, composition comprising a polycondensate The application also relates to a method of cosmetic treatment using the composition, the polycondensate thus defined and a method of preparing the polycondensate.

  本申请涉及一种化妆品或药用品，特别是口红，包括聚缩酸酯的组合物。该申请还涉及一种使用该组合物进行化妆处理的方法，所述聚缩酸酯的定义以及一种制备聚缩酸酯的方法。
• COSMETIC OR PHARMACEUTICAL COMPOSITION COMPRISING A POLYCONDENSATE, THE SAID POLYCONDENSATE AND METHOD OF COSMETIC TREATMENT
  申请人：Malle Gerard

  公开号：US20100272660A1

  公开（公告）日：2010-10-28

  The present application relates to a cosmetic or pharmaceutical composition comprising a polycondensate capable of being obtained by the reaction of the following monomers alone: of 10 to 30% by weight, relative to the total weight of the polycondensate, of one or more polyols comprising 3 to 6 hydroxyl groups; of 30 to 80% by weight, relative to the total weight of the polycondensate, of one or more linear, branched and/or cyclic, saturated or unsaturated, non-aromatic monocarboxylic acids comprising 6 to 32 carbon atoms; of 1 to 40% by weight, relative to the total weight of the polycondensate, of one or more polycarboxylic acids and/or cyclic anhydrides of such a polycarboxylic acid and/or lactones comprising at least one COOH group; and optionally of 0.1 to 15% by weight, relative to the total weight of the polycondensate, of one or more silicones having a hydroxyl and/or carboxyl functional group. The application also relates to a method of cosmetic treatment using the said composition, and the polycondensate thus defined.

  本申请涉及一种化妆品或药用组合物，包括由以下单体反应而得的聚缩酸酯：相对于聚缩酸酯的总重量，占10至30%的一种或多种含有3至6个羟基的多元醇；占30至80%的一种或多种线性、支链和/或环状、饱和或不饱和、非芳香族的单羧酸，含有6至32个碳原子；占聚缩酸酯总重量的1至40%的一种或多种多羧酸和/或多羧酸的环状酐和/或含有至少一个COOH基团的内酯；以及可选地占聚缩酸酯总重量的0.1至15%的一种或多种硅氧烷，具有羟基和/或羧基官能团。该申请还涉及使用所述组合物进行化妆处理的方法，以及如此定义的聚缩酸酯。
• Electrosynthesis of pyrazole-4-carboxylic acids by oxidation of 4-formylpyrazoles on NiO(OH)-electrode in aqueous alkaline solution
  作者：B. V. Lyalin、V. A. Petrosyan

  DOI：10.1007/s11172-012-0156-9

  日期：2012.6

  Electrochemical oxidation of di- and trisubstituted 4-formylpyrazoles on a Ni-anode in aqueous alkali led to the formation of the corresponding pyrazole-4-carboxylic acid in 60–90% yields. The yields of the target products depend on position of substituent in the pyrazole ring and are decreased in the following sequence of substituent at position 1 Me > Et > Ph, as well as when the aqueous medium was replaced with aqueous alcohol (50% ButOH). Oxidation of 4-formylpyrazoles containing Me groups at the carbon atoms of the pyrazole ring led, to monoacids and also pyrazoledicarboxylic acids in small (1.5–14%) amounts; the latter were the oxidation products of the aldehyde and the Me groups.

  在水性碱性条件下，二取代和三取代的4-叠氮酮在镍阳极上进行电化学氧化，形成相应的4-吡唑-4-羧酸，产率为60–90%。目标产物的产率取决于吡唑环中取代基的位置，并且产率随取代基在位置1的不同依次降低，顺序为Me > Et > Ph。此外，当水相介质被水性醇（50%的正丁醇）替代时，产率也会下降。含有甲基在吡唑环碳原子上的4-叠氮酮的氧化产生了单羧酸和少量（1.5–14%）的吡唑二羧酸；后者是醛和甲基的氧化产物。
• Reaction of 4-hydroxy-5-oximino-3-thiophenecarboxylates with hydrazines. Formation of pyrazolylthiohydroxamic acids
  作者：R. L. Robey、C. A. Alt、E. E. Van Meter

  DOI：10.1002/jhet.5570340210

  日期：1997.3

  The reactions of 4-hydroxy-5-oximino-3-thiophenecarboxylates with hydrazine and substituted hydrazines have been investigated. The products of the reactions have been shown to be pyrazole-3- or 5-thiohydroxamic acids rather than the hydrazones previously described by Benary and Silberstrom. Two alternate mechanisms are proposed which account for the regiochemical outcome. The structures of the pyrazole-3-

  已经研究了4-羟基-5-氧亚氨基-3-噻吩羧酸盐与肼和取代的肼的反应。已经显示反应的产物是吡唑-3-或5-硫代异羟肟酸，而不是贝纳利和席尔伯斯特伦先前描述的。提出了两种替代机制来解释区域化学结果。吡唑-3-和5-硫代异羟肟酸的结构以及相应的腈已通过独立合成，与已知化合物进行比较以及质子和碳磁共振以及远距离HETCOR实验得到了证明。