2-正丁基-4-戊烯酸 | 1575-75-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 中文名称: 2-正丁基-4-戊烯酸
• 英文名称: 2-n-butyl-4-pentenoic acid
• 英文别名: 2-butyl-pent-4-enoic acid；2-Butyl-pent-4-ensaeure；2-Prop-2-enylhexanoic acid
• CAS: 1575-75-3
• 化学式: C₉H₁₆O₂
• 分子量: 156.225
• InChiKey: PXULVNRQCVINOV-UHFFFAOYSA-N

物化性质

• 沸点：
  105-112 °C(Press: 6 Torr)
• 密度：
  0.934±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  11
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 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：

  2-正丁基-4-戊烯酸 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 反应 4.0h， 生成 2-allylhexan-1-ol
  参考文献：
  名称：

  直接分子内烯丙基胺化反应中惊人的AcOH加速

  摘要：

  酸碱反应可加快缓慢的催化循环！以乙酸为溶剂，可实现快速，有效的Pd II催化的直接分子内烯丙基胺化反应，协助苯醌介导的钯的再氧化和中间钯配合物的电离（参见方案）。通过详细的DFT分析说明了催化循环中这一关键步骤的结构和能量方面。

  DOI：

  10.1002/chem.200901946
• 作为产物：
  描述：

  2-butyl-2-ethoxycarbonylpenten-4-oic acid ethyl ester 生成 2-正丁基-4-戊烯酸
  参考文献：
  名称：

  Synthese de .DELTA.-lactones. V. Synthese d'alcoyl-3 .DELTA.-lactones.

  摘要：

  通过溴代烯丙烷的缩合，然后通过烷基卤化物与乙基丙二酸酯反应，我们制备了乙基烷基烯丙基丙二酸酯。这些酯的水解产生烷基-2Δ4-戊烯酸，利用双（3-甲基-2-丁基）硼烷，将其转化为烷基-2-羟基-5-戊酸。这些羟基酸的环化脱水反应产生烷基-3-δ-内酯。

  DOI：

  10.1248/cpb.24.538

文献信息

• DIAMINOPROPANE DERIVED MACROCYCLES AS INHIBITORS OF BETA AMYLOID PRODUCTION
  申请人：Marcin Lawrence R.

  公开号：US20080194535A1

  公开（公告）日：2008-08-14

  There is provided a series of macrocyclic diaminopropanes of Formula (I) or a stereoisomer; or a pharmaceutically acceptable salt thereof, wherein R 1 , R 2 , R 3 , m, n, W, X, Y, Z and L as defined herein, their pharmaceutical compositions and methods of use. These novel compounds inhibit the processing of amyloid precursor protein (APP) by β-secretase and, more specifically, inhibit the production of Aβ-peptide. The present disclosure is directed to compounds useful in the treatment of neurological disorders related to β-amyloid production, such as Alzheimer's disease and other conditions affected by anti-amyloid activity.

  提供一系列宏环脂肪二胺丙烷化合物的化学式（I）或其立体异构体；或其药用盐， 其中R1，R2，R3，m，n，W，X，Y，Z和L如本文所定义，它们的药物组合物和使用方法。这些新化合物抑制β-分泌酶对淀粉样前体蛋白（APP）的加工，更具体地说，抑制Aβ-肽的产生。本公开涉及对治疗与β-淀粉样蛋白产生相关的神经系统疾病的化合物，如阿尔茨海默病和其他受抗淀粉样活性影响的疾病。
• [EN] METHOD FOR PRODUCING AN ESTER<br/>[FR] PROCÉDÉ DE PRODUCTION D'UN ESTER
  申请人：PERSTORP AB

  公开号：WO2017192084A1

  公开（公告）日：2017-11-09

  Disclosed is a method for production of an ester obtained from a reaction between at least one alcohol having at least one hydroxyl group, such as a diol, and at least one linear of branched C3-C20 monocarboxylic acid, said reaction being performed in presence of at least one azeotropic solvent and optionally at least one antioxidant. Said method comprises the steps of (a) charging said alcohol, said monocarboxylic acid, and said azeotropic solvent and optionally said antioxidant to a reactor, (b) subjecting said alcohol and said carboxylic acid to esterification under reflux, (c) removing azeotropic solvent and unreacted carboxylic acid from yielded reaction mixture, (d) steam stripping off residual unreacted carboxylic acid, (e) neutralising yielded reaction product with an aqueous base, (f) separating water and organic phases, (g) recovering said organic phase and evaporating residual water, and (h) filtering off said antioxidant and possible remaining salts in yielded reaction product. The method is preferably performed in at least one reactor equipped with reflux, at least one vacuum pump, evaporation/distillation, steam stripping and decantation, and at least one filtration unit and optionally at least one coalescer filtre.

  揭示了一种从至少一种具有至少一个羟基的醇（例如二元醇）和至少一种直链或支链的C3-C20单羧酸之间的反应中获得酯的生产方法，所述反应在至少一种共沸溶剂的存在下进行，且可选地在至少一种抗氧化剂的存在下进行。该方法包括以下步骤：（a）将所述醇、所述单羧酸、所述共沸溶剂和可选的所述抗氧化剂装入反应器；（b）使所述醇和所述羧酸在回流条件下酯化；（c）从产生的反应混合物中去除共沸溶剂和未反应的羧酸；（d）蒸汽脱除残留的未反应羧酸；（e）用水性碱中和产生的反应产物；（f）分离水相和有机相；（g）回收所述有机相并蒸发残留水分；（h）过滤掉产生的反应产物中的抗氧化剂和可能残留的盐。该方法最好在至少一个配有回流、至少一个真空泵、蒸发/蒸馏、蒸汽脱除和倾析以及至少一个过滤单元的反应器中进行，且可选地在至少一个聚结滤器中进行。
• Copper(II)-Catalyzed Alkene Aminosulfonylation with Sodium Sulfinates For the Synthesis of Sulfonylated Pyrrolidones
  作者：Wei-Hao Rao、Li-Li Jiang、Xiao-Meng Liu、Mei-Jun Chen、Fang-Yuan Chen、Xin Jiang、Jin-Xiao Zhao、Guo-Dong Zou、Yu-Qiang Zhou、Lin Tang

  DOI：10.1021/acs.orglett.9b00907

  日期：2019.4.19

  A copper-catalyzed direct aminosulfonylation of unactivated alkenes with sodium sulfinates for the efficient synthesis of sulfonylated pyrrolidones is described. This reaction features good functional group tolerance and wide substrate scope, providing an efficient and straightforward protocol to access this kind of pyrrolidones. Moreover, preliminary mechanistic investigations disclosed that a free-radical

  描述了铜的未活化烯烃与亚磺酸钠的铜催化的直接氨基磺酰化，用于有效合成磺酰化的吡咯烷酮。该反应具有良好的官能团耐受性和广泛的底物范围，提供了访问此类吡咯烷酮的有效而直接的方法。此外，初步的机械研究表明，在此过程中可能涉及自由基途径。
• Novel gamma-lactams as beta-secretase inhibitors
  申请人：Thompson A. Lorin

  公开号：US20060046984A1

  公开（公告）日：2006-03-02

  There is provided a series of novel substituted gamma-lactams of Formula (I) or a stereoisomer; or a pharmaceutically acceptable salt thereof, wherein R 1 , R 2 , R 4 , R 5 and R 6 as defined herein, their pharmaceutical compositions and methods of use. These novel compounds inhibit the processing of amyloid precursor protein (APP) by β-secretase and, more specifically, inhibit the production of Aβ-peptide. The present disclosure is directed to compounds useful in the treatment of neurological disorders related to β-amyloid production, such as Alzheimer's disease and other conditions affected by anti-amyloid activity.

  提供了一系列新型取代的γ-内酰胺，化学式为(I)或其立体异构体；或其药用盐，其中R1、R2、R4、R5和R6如本文所定义，它们的药用组合物和使用方法。这些新型化合物抑制β-分泌酶对淀粉样前体蛋白（APP）的加工，更具体地抑制Aβ肽的产生。本公开涉及对β-淀粉样蛋白产生相关的神经系统疾病的治疗有用的化合物，如阿尔茨海默病和其他受抗淀粉样活性影响的疾病。
• Synthesis of polyfluoroalkyl-γ-lactones from polyfluoroalkyl halides and 4-pentenoic acids
  作者：Xiaowei Zou、Fanhong Wu、Yongjia Shen、Sheng Xu、Weiyuan Huang

  DOI：10.1016/s0040-4020(03)00250-3

  日期：2003.3

  The polyfluoroalkyl-lactonization of 4-pentenoic acids having a substituent at the 2 or 3 position with the polyfluoroalkyl iodides initiated by sodium dithionite was realized in good yields. A new and efficient method for the synthesis of fluorine-containing γ-lactones is described.

  实现了由连二亚硫酸钠引发的多氟烷基碘与在2或3位具有取代基的4-戊烯酸的多氟烷基内酯化。描述了一种合成含氟γ-内酯的新的有效方法。