3-tert.-Butyl-crotonsaeure | 21797-56-8

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 3-tert.-Butyl-crotonsaeure
• 英文别名: 3,4,4-trimethyl-pent-2-enoic acid；3,4,4-Trimethyl-pent-2-ensaeure；3,4,4-trimethyl-2-pentenoic acid；(E)-3,4,4-Trimethylpent-2-enoic acid
• CAS: 21797-56-8
• 化学式: C₈H₁₄O₂
• 分子量: 142.198
• InChiKey: NFLSFCFOAOZXFO-AATRIKPKSA-N

物化性质

• 熔点：
  81-82 °C
• 沸点：
  228.2±9.0 °C(Predicted)
• 密度：
  0.956±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  10
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-tert.-Butyl-crotonsaeure 以 甲醇 、 氘代甲醇 为溶剂， 反应 4.0h， 生成 Z-4-tert-butyl-2-hydroxy-2,4-pentadiene
  参考文献：
  名称：

  Duhaime, Randy M.; Weedon, Alan C., Canadian Journal of Chemistry, 1987, vol. 65, p. 1867 - 1872

  摘要：

  DOI：
• 作为产物：
  描述：

  3-羟基-3,4,4-三甲基-戊酸 在 乙酸酐 作用下， 生成 3-tert.-Butyl-crotonsaeure
  参考文献：
  名称：

  THE DEHYDRATION OF 3-HYDROXY-3,4,4-TRIMETHYLPENTANOIC ACID¹

  摘要：

  DOI：

  10.1021/jo01185a003

文献信息

• SUBSTITUTED CYANO CYCLOALKYL PENTA-2,4-DIENES, CYANO CYCLOALKYL PENT-2-EN-4-YNES, CYANO HETEROCYCLYL PENTA-2,4-DIENES AND CYANO HETEROCYCLYL PENT-2-EN-4-YNES AS ACTIVE SUBSTANCES
  申请人：BAYER CROPSCIENCE AKTIENGESELLSCHAFT

  公开号：US20170210701A1

  公开（公告）日：2017-07-27

  The invention relates to cyano cycloalkyl penta-2,4-dienes, cyano cycloalkyl pent-2-en-4-ynes, cyano heterocyclyl penta-2,4-dienes and cyano heterocyclyl pent-2-en-4-ynes of general formula (I), or the salts thereof, where [X-Y], Q, R 1 , R 2 , A 1 , A 2 , V, W, m and n have the definitions specified in the description. The invention also relates to a production method for same and to the use of same for increasing stress tolerance in plants against abiotic stress, and/or for increasing the plant yield.

  该发明涉及一般式(I)的氰基环烷基戊二烯、氰基环烷基戊-2-炔、氰基杂环烷基戊二烯和氰基杂环烷基戊-2-炔，或其盐，其中[X-Y]、Q、R1、R2、A1、A2、V、W、m和n的定义如描述中所指定。该发明还涉及同类物质的生产方法以及将其用于增加植物对非生物胁迫的抗逆性和/或增加植物产量。
• Catalytic Asymmetric Formation of δ-Lactones from Unsaturated Acyl Halides
  作者：Paolo S. Tiseni、René Peters

  DOI：10.1002/chem.200902896

  日期：2010.2.22

  Previously unexplored enantiopure zwitterionic ammonium dienolates have been utilized in this work as reactive intermediates that act as diene components in hetero‐Diels–Alder reactions (HDAs) with aldehydes to produce optically active δ‐lactones, subunits of numerous bioactive products. The dienolates were generated in situ from E/Z mixtures of α,β‐unsaturated acid chlorides by use of a nucleophilic

  以前未经探索的对映纯两性离子二烯酸铵已被用作反应性中间体，在醛与异狄尔斯-阿尔德反应（HDA）中与二烯一起充当醛，以产生光学活性的δ-内酯，这是许多生物活性产物的亚基。通过使用亲核性奎尼丁衍生物和Sn（OTf）2作为助催化剂，从α，β-不饱和酰氯的E / Z混合物中原位生成二烯酸酯。后者组分不直接与醛一起参与环加成步骤，而只是促进了反应性二烯酸酯类物质的形成。通过使用由Er（OTf）3形成的络合物，大大提高了环加成反应的范围。以及一个简单的市售去甲肾上腺素衍生的配体，该配体可耐受多种芳香族和杂芳香族醛，以协同作用于双官能路易斯酸/路易斯碱催化反应，从而提供具有出色对映选择性的α，β-不饱和δ-内酯。机理研究证实了两种催化体系均生成了二烯酸酯中间体。活性Er III络合物很可能是单体物质。有趣的是，所有镧系元素都可以催化标题反应，但是在产率和对映选择性方面的效率直接取决于Ln III离子的半径。同样，假镧系元素Sc
• SUBSTITUTED 5-(BICYCLO[4.1.0]HEPT-3-EN-2-YL)PENTA-2,4-DIENES AND 5-(BICYCLO[4.1.0]HEPT-3-EN-2-YL)PENT-2-ENE-4-INES AS ACTIVE AGENTS AGAINST ABIOTIC STRESSES IN PLANTS
  申请人：Frackenpohl Jens

  公开号：US20140051577A1

  公开（公告）日：2014-02-20

  The invention relates to substituted 5-(bicyclo[4.1.0]hept-3-en-2-yl)penta-2,4-dienes and 5-(bicyclo[4.1.0]hept-3-en-2-yl)pent-2-ene-4-ines of the formula (I) and salts thereof, where the radicals R1, R2, R3, R4, R5, [X—Y] and Q are each as defined in the description, to processes for preparation thereof and to the use thereof for enhancing stress tolerance in plants with respect to abiotic stress, and/or for increasing plant yield.

  该发明涉及代换的5-(bicyclo[4.1.0]庚-3-烯-2-基)戊-2,4-二烯和5-(bicyclo[4.1.0]庚-3-烯-2-基)戊-2-烯-4-炔的化合物及其盐，其中基团R1、R2、R3、R4、R5、[X—Y]和Q的定义如描述中所示，以及其制备方法和用途，用于增强植物对非生物胁迫的抗压能力，和/或增加植物产量。
• SUBSTITUTED 5-(CYCLOHEX-2-EN-1-YL)-PENTA-2,4-DIENES AND 5-(CYCLOHEX-2-EN-1-YL)-PENT-2-EN-4-INES AS ACTIVE AGENTS AGAINST ABIOTIC STRESS IN PLANTS
  申请人：Frackenpohl Jens

  公开号：US20140087949A1

  公开（公告）日：2014-03-27

  The invention relates to substituted 5-(cyclohex-2-en-1-yl)penta-2,4-dienes and 5-(cyclohex-2-en-1-yl)pent-2-en-4-ines of the formula (I) and their salts where the radicals R 1 , R 2 , R 3 , R 4 , [X—Y] and Q are each as defined in the description, to processes for preparation thereof and to the use thereof for enhancing stress tolerance in plants with respect to abiotic stress, and/or for increasing plant yield.

  该发明涉及代换的5-(环己-2-烯-1-基)戊-2,4-二烯和5-(环己-2-烯-1-基)戊-2-烯-4-炔的化合物(I)及其盐，其中基团R1、R2、R3、R4、[X—Y]和Q如描述中所定义，以及其制备方法和用途，用于增强植物对非生物胁迫的抗逆性，并/或增加植物产量。
• Process for Preparing an Overbased Detergent
  申请人：Kocsis A. Jody

  公开号：US20060178278A1

  公开（公告）日：2006-08-10

  The invention relates to a process for preparing an overbased metal detergent in an oil medium comprising the steps of: (1) providing a metal salt selected from the group consisting of a hydrocarbyl-substituted organic acid; a hydrocarbyl-substituted phenol, a phenate, a hydrocarbyl-substituted carboxylate and mixtures thereof; (2) further providing methanol and a mixture of alcohols containing 2 to about 7 carbon atoms, wherein the mole ratio of methanol to the mixture of alcohols is about 2.2 or less, to form a mixture; (3) further providing a basic metal compound; (4) reacting the mixture of step (3) with carbon dioxide to form a carbonated overbased metal sulphonate; (5) performing steps (3) and (4) at least three additional times upon the product of step (4); (6) thereafter removing at least a portion of the water produced in steps (1)-(5) and of the alcohols introduced in step (2); (7) performing step (2) again, upon the product of step (6); (8) performing steps (3) and (4) at least two additional times upon the product of step (7); and (9) thereafter removing a substantial portion of the water and of the alcohols from the composition; wherein the oil medium is present in an amount such that the weight ratio of the acid corresponding to the metal salt of (1) to the oil medium is 0.3 to 1.4; and wherein step (6) is required when the hydrocarbyl-substituted organic acid is a hydrocarbyl-substituted sulphonic acid. The invention further relates to its use in internal combustion engines.

  该发明涉及一种在油介质中制备过基金属清洁剂的方法，包括以下步骤：（1）提供一种选自羟烃基取代有机酸、羟烃基取代酚、酚酸盐、羟烃基取代羧酸盐及其混合物的金属盐；（2）进一步提供甲醇和含有2至约7个碳原子的醇混合物，其中甲醇与醇混合物的摩尔比约为2.2或更低，形成混合物；（3）进一步提供一种碱性金属化合物；（4）将步骤（3）的混合物与二氧化碳反应，形成碳酸盐过基金属磺酸盐；（5）对步骤（4）的产物至少进行三次以上的步骤（3）和（4）；（6）随后至少去除步骤（1）至（5）中产生的部分水和步骤（2）中引入的醇；（7）对步骤（6）的产物再次执行步骤（2）；（8）对步骤（7）的产物至少进行两次以上的步骤（3）和（4）；（9）随后从组合物中去除大部分水和醇；其中油介质的量使得步骤（1）中金属盐对应的酸与油介质的重量比为0.3至1.4；当羟烃基取代有机酸为羟烃基取代磺酸时，需要步骤（6）。该发明还涉及该方法在内燃机中的应用。