2H-pyran-3,5-dicarboxylic acid

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 2H-pyran-3,5-dicarboxylic acid
• 化学式: C₇H₆O₅
• 分子量: 170.122
• InChiKey: FFDQHGQBGXCCAK-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：
  0.14
• 拓扑面积：
  83.8
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2H-pyran-3,5-dicarboxylic acid 以 四氢呋喃 、 水 为溶剂， 以7.57 g (19%)的产率得到哌啶-3,5-二羧酸
  参考文献：
  名称：

  3,5-dicarboxylic acid esters of 2,6-bis(fluoro-alkyl)-2,6-bis(hydroxy)

  摘要：

  公式为##STR1##的化合物中，其中x为NH，R.sub.1选自支链低碳烷基、烷氧基烷基、烷基硫基烷基、环烷基和环烷基烷基基团，R.sub.2为C.sub.1-4烷基基团，R.sub.3代表C.sub.1-4氟烷基基团，被披露为除草剂。

  公开号：

  US04618679A1
• 作为产物：
  描述：

  五氟丙酰基乙酸乙酯 、 丙醛 生成 2H-pyran-3,5-dicarboxylic acid
  参考文献：
  名称：

  3,5-dicarboxylic acid esters of 2,6-bis(fluoro-alkyl)-2,6-bis(hydroxy)

  摘要：

  公式为##STR1##的化合物中，其中x为NH，R.sub.1选自支链低碳烷基、烷氧基烷基、烷基硫基烷基、环烷基和环烷基烷基基团，R.sub.2为C.sub.1-4烷基基团，R.sub.3代表C.sub.1-4氟烷基基团，被披露为除草剂。

  公开号：

  US04618679A1

文献信息

• 2,6-bis(trifluoromethyl)-3-hydroxycarbonyl pyridine, salts and
  申请人：Monsanto Company

  公开号：US04747871A1

  公开（公告）日：1988-05-31

  The present invention relates to pyridines of the formula ##STR1## wherein R is selected from the group consisting of hydrogen and agriculturally acceptable cations, and their use as gametocides.

  本发明涉及公式为##STR1##的吡啶，其中R选自氢和农业可接受的阳离子群，以及它们作为配子杀草剂的用途。
• Herbicidal method and compositions containing 3,5-dicarboxylic acid esters of 2,6-bis-(fluoroalkyl) tetrahydropyrans and piperidines
  申请人：MONSANTO COMPANY

  公开号：EP0138795A1

  公开（公告）日：1985-04-24

  The disclosure herein pertains to herbicidal methods and compositions containing 3,5-dicarboxylic acid esters of 2,6-bis-(fluoroalkyl) tetrahydropyrans and piperidines which may be substituted in the 4-position by certain alkyl, phenylalkyl, phenyl, alkoxyalkyl, alkythioalkyl, cycloalkyl, and heterocyclic radicals wherein the hetero atom is oxygen and sulfur and to a process for the preparation thereof. These compounds are useful as pre-emergent herbicides.

  本文公开了含有 2,6-双（氟烷基）四氢吡喃和哌啶的 3,5-二羧酸酯的除草方法和组合物，其 4 位可被某些烷基、苯烷基、苯基、烷氧基烷基、烷硫基、环烷基和杂环基取代，其中杂原子为氧和硫。这些化合物可用作萌芽前除草剂。
• Pyridine gametocides
  申请人：Monsanto Company

  公开号：EP0276204A2

  公开（公告）日：1988-07-27

  The present invention relates to the use of 2,6-bis(trifluoromethyl)-3-methoxycarbonyl-4-hydroxypyridine and certain derivatives thereof as gametocides.

  本发明涉及 2,6-双（三氟甲基）-3-甲氧羰基-4-羟基吡啶及其某些衍生物作为杀配子剂的用途。
• Preparation of 3,5-dicarboxylic esters of 2,6-bis (Fluoroalkyl) piperidines
  申请人：Monsanto Company

  公开号：EP0291565A1

  公开（公告）日：1988-11-23

  An improved process for the preparation of a compound of the formula wherein X is NH; R₁ is selected from lower alkyl, phenyl, heterocyclic radicals having 3-6 atoms in the ring with 1-3 atoms selected from O, S, and N; R₂ is a C1-4 alkyl radical and R₃ represents a C1-4 fluoroalkyl radical, comprises reacting a 3-ketoester with an aldehyde in the presence of piperidine as a catalyst to form a corresponding pyran, i.e. a compound of the above formula in which X is oxygen, and then passing gaseous ammonia through the reaction mixture to react therewith to produce the desired compound.

  一种制备式化合物的改进工艺 其中 X 为 NH；R₁ 选自低级烷基、苯基、环上有 3-6 个原子的杂环基，其中 1-3 个原子选自 O、S 和 N；R₂ 为 C1-4 烷基，R₃ 代表 C1-4 氟烷基，包括在哌啶作为催化剂存在下，使 3-酮酯与醛反应生成相应的吡喃，即上式中 X 为氧的化合物，然后使气态氨通过反应混合物与之反应生成所需的化合物。即上式中 X 为氧的化合物，然后使气态氨通过反应混合物，与之反应生成所需的化合物。
• TREATING SOLUTION FOR ELECTRONIC PARTS, AND PROCESS FOR PRODUCING ELECTRONIC PARTS
  申请人：FINE POLYMERS CORPORATION

  公开号：US20150279654A1

  公开（公告）日：2015-10-01

  The invention provides an aqueous solution capable of selectively protecting a nitrogen-containing silicon compound from corrosion by a treating solution for etching, cleaning or the like, etching oxygen-containing, carbon-containing silicon in particular, and making a large etch rate difference between a nitrogen-containing silicon compound and an oxygen-containing silicon compound, and a process for producing electronic parts as well. The invention is embodied by a treating solution for electronic parts that is an aqueous solution containing one or two or more of anionic surface active agents represented by the following formulae (1), (2) and (3), and a process for producing an electronic part. wherein R 1 , R 2 , and R 3 stands for hydrogen or an alkyl or alkylene group having 1 to 4 carbon atoms, and X 1 stands for a functional group capable of becoming an anionic ion. wherein R 4 stands for hydrogen or an alkyl or alkylene group having 1 to 4 carbon atoms, X 2 stands for a functional group capable of becoming an anionic ion, and n stands for a natural number of greater than 2. wherein R 5 stands for hydrogen or an alkyl or alkylene group having 1 to 4 carbon atoms, and X 3 , and X 4 stands for a functional group capable of becoming an anionic ion.