2-ethyl-1-phenyl-3-buten-1-ol

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2-ethyl-1-phenyl-3-buten-1-ol
• 英文别名: 2-ethenyl-1-phenyl-1-butanol；2-Ethyl-1-phenylbut-3-en-1-ol
• 化学式: C₁₂H₁₆O
• 分子量: 176.258
• InChiKey: BKADIBGRUIRJAD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  戊烯 、 苯甲酰氯 在 二氯二茂锆 、 magnesium 、 1,2-二溴乙烷 作用下， 以 四氢呋喃 、 苯 为溶剂， 反应 3.5h， 以77%的产率得到2-ethyl-1-phenyl-3-buten-1-ol
  参考文献：
  名称：

  Transformation of Zirconocene−Olefin Complexes into Zirconocene Allyl Hydride and Their Use as Dual Nucleophilic Reagents:  Reactions with Acid Chloride and 1,4-Diketone

  摘要：

  Zirconocene-olefin complexes Cp2Zr(H2C=CHR), prepared in benzene-THF at 0 degreesC, react with acid chlorides to provide homoallylic alcohols. The key is an equilibrium between the zirconocene-olefin complexes and the corresponding zirconocene allyl hydride complexes via allylic C-H bond cleavage of the coordinating alkenes. Furthermore, the zirconocene-olefin complexes are also available for the reaction with 1,4-diketone to afford anti-1,4-diols with excellent diastereoselectivity. Thus, Cp2Zr(H2C CHR) serves as a donor of both hydride and an allylic group. These reactions also proceed efficiently by using zirconocene-olefin complexes, derived from Cp2ZrCl2, Mg metal, and 1-alkenes.

  DOI：

  10.1021/ja049184y

文献信息

• Asymmetric Pentenylation of Aldehydes: A New Benchmark for the Preparation of Ethyl-Substituted Homoallylic Alcohol
  作者：Stellios Arseniyadis、Janine Cossy、Ravindra Sonawane、Shyamsunder Joolakanti

  DOI：10.1055/s-0028-1087641

  日期：——

  A highly diastereo- and enantioselective boron-mediated pentenylation reaction is presented. The chiral pentenylborane ­reagents, which are derived from pinene, undergo addition to various aldehydes to afford ethyl-substituted homoallylic alcohols in good yield and high stereoselectivity. The latter are then easily converted into the corresponding α,β-unsaturated δ-lactones using an acylation/ring-closing metathesis sequence. The relative and absolute stereochemistry is exclusively controlled by the reagent.

  本文介绍了一种高度非对映选择性和对映选择性的硼介导戊烯化反应。从蒎烯衍生的手性戊烯基硼烷试剂与各种醛反应，以良好的产率和高度的立体选择性提供乙基取代的同烯丙基醇。后者随后通过酰化/环合复分解反应序列容易地转化为相应的α,β-不饱和δ-内酯。相对和绝对立体化学完全由试剂控制。
• Direct Preparation of Allylic Zirconium Reagents from Zirconocene−Olefin Complexes and Alkenes
  作者：Kazuya Fujita、Hideki Yorimitsu、Hiroshi Shinokubo、Koichiro Oshima

  DOI：10.1021/jo049863r

  日期：2004.5.1

  for preparation of allylic zirconium reagents directly from 1-alkenes via zirconocene−olefin complex has been developed. Selective transfer of the hydride of zirconocene allyl hydride complex, a tautomer of zirconocene−olefin complex, to diisopropyl ketone generates the corresponding zirconocene alkoxide allyl. The allylic zirconium reagents formed effects stereoselective allylation of aldehyde at 25

  已开发出一种新的方法，可通过锆茂-烯烃复合物直接从1-烯烃制备烯丙基锆试剂。锆茂-烯络合物的互变异构体锆茂烯丙基氢化物配合物的氢化物选择性转移至二异丙基酮，生成相应的锆茂烯醇盐烯丙基。形成的烯丙基锆试剂在25°C和-78°C下实现醛的立体选择性烯丙基化，分别提供顺式和反式均烯丙基醇。该反式异构体是通过动力学控制下的六元椅过渡态形成。该SYN -选择性可以通过考虑异构化合理化反被retroallylation过程-adduct。
• Allylation Reactions of Aldehydes with Allylboronates in Aqueous Media: Unique Reactivity and Selectivity that are Only Observed in the Presence of Water
  作者：Shū Kobayashi、Toshimitsu Endo、Takumi Yoshino、Uwe Schneider、Masaharu Ueno

  DOI：10.1002/asia.201300440

  日期：2013.9

  Zn(OH)2‐catalyzed allylation reactions of aldehydes with allylboronates in aqueous media have been developed. In contrast to conventional allylboration reactions of aldehydes in organic solvents, the α‐addition products were obtained exclusively. A catalytic cycle in which the allylzinc species was generated through a B‐to‐Zn exchange process is proposed and kinetic studies were performed. The key

  已经开发了在水性介质中醛与烯丙基硼酸酯的Zn（OH）2催化的烯丙基化反应。与传统的醛在有机溶剂中的烯丙基硼化反应相反，α-加成产物是唯一获得的。提出了一个催化循环，其中烯丙基锌物质是通过B到Zn交换过程生成的，并进行了动力学研究。通过HRMS（ESI）分析和在线连续MS（ESI）分析检测了关键中间体烯丙基锌。该分析表明，在水性介质中，烯丙基锌物质与醛和水竞争性反应。用几种典型的烯丙基硼酸根（6a，图6b，6c，6d）阐明了水在该烯丙基化反应中的几个重要作用。醛与烯丙基硼酸2,2-二甲基-1,3-丙二醇酯的烯丙基化反应在水性介质中存在催化量的Zn（OH）2和非手性配体4d的情况下顺利进行，从而提供了相应的顺式加合物。具有非对映选择性高的收率。在所有情况下，均获得了α加成产物，并且可以耐受广泛的底物范围。此外，通过使用手性配体9将该反应应用于不对称催化。基于Zn- 9的X射线结构此外，还发现一
• Nickel-catalyzed indium(i)-mediated double addition of aldehydes to 1,3-dienes
  作者：Tsunehisa Hirashita、Shinya Kambe、Hiromitsu Tsuji、Shuki Araki

  DOI：10.1039/b603597c

  日期：——

  In the presence of InI, Ni(acac)2 and PPh3, several 1,3-dienes were reacted with two molecules of aldehyde to give the corresponding 1,4- and 1,6-diols. The regioselectivity of the 1,4-/1,6-diol was efficiently regulated by the addition of water; the 1,6-diol was obtained selectively in dry THF, whereas the 1,4-diol was obtained predominantly in DMI containing a small amount of water.

  在 InI、Ni(acac)2 和 PPh3 的存在下，几种 1,3-二烯与两分子醛发生反应，生成相应的 1,4- 和 1,6- 二醇。1,4-/1,6 二醇的区域选择性可通过加水有效调节；1,6-二醇可在干燥的 THF 中选择性地获得，而 1,4- 二醇则主要在含有少量水的 DMI 中获得。
• Reaction of 1,3-Dihalopropene with Trialkylmanganate
  作者：Hirotada Kakiya、Rie Inoue、Hiroshi Shinokubo、Koichiro Oshima

  DOI：10.1246/cl.1998.73

  日期：1998.1

  A three-component coupling reaction was performed. Treatment of 1,3-dibromopropene or 1,3-dichloropropene with tributylmanganate (n-Bu3MnLi) provided a butylated allylmanganese compound which could be trapped by an electrophile such as benzaldehyde.

  进行了三组分偶联反应。用锰酸三丁酯（n-Bu3MnLi）处理 1,3-二溴丙烯或 1,3-二氯丙烯，可得到丁基烯丙基锰化合物，该化合物可被亲电子体（如苯甲醛）捕获。