(E)-1-iodo-2-(1-cyclohexenyl)ethene | 201859-33-8

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 乙烯基卤化物
• 英文名称: (E)-1-iodo-2-(1-cyclohexenyl)ethene
• 英文别名: (E)-2-(1-cyclohexenyl)-1-iodoethene；(E)-1-(2-iodovinyl)cyclohex-1-ene；1-[(E)-2-iodoethenyl]cyclohexene
• CAS: 201859-33-8
• 化学式: C₈H₁₁I
• 分子量: 234.08
• InChiKey: YNXFECYRDFBIBM-VOTSOKGWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  9
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  (E)-1-iodo-2-(1-cyclohexenyl)ethene 在 Cl₂Pd[bis(2-diphenylphosphinophenyl) ether] 、 叔丁基锂 、 zinc dibromide 作用下， 以 四氢呋喃 、 乙醚 、 正戊烷 为溶剂， 反应 4.0h， 生成 (1E,3E,5E)-1-(1-cyclohexenyl)-3-methyl-8-trimethylsilyl-1,3,5-octatrien-7-yne
  参考文献：
  名称：

  Clean Inversion of Configuration in the Pd-Catalyzed Cross-Coupling of 2-Bromo-1,3-dienes

  摘要：

  The Pd-catalyzed cross-coupling reaction of 2-bromo-1,3-dienes derived from alkyl aldehydes, especially with Cl2Pd(DPEphos) as a catalyst, proceeds with clean stereoinversion of the Br-bearing C=C bond to produce in high yields and in high stereoselectivity (>/=97-98%) conjugated Z,E dienes of potentially high utility in the synthesis of complex natural products. The observed stereoinversion cannot be readily accommodated by the widely accepted pi-sigma-pi rearrangement mechanism for isomerization of ordinary allylpalladium derivatives.

  DOI：

  10.1021/ja0304392
• 作为产物：
  描述：

  [(E)-2-(cyclohexen-1-yl)ethenyl]-dicyclohexylborane 在 1-己烯 、 二异丁基氢化铝 、 碘 作用下， 反应 2.0h， 生成 (E)-1-iodo-2-(1-cyclohexenyl)ethene
  参考文献：
  名称：

  烷-1-烯基从硼到铝的转移：制备（E）-烷-1-烯二异丁烷的新方法。

  摘要：

  在室温下在己-1-烯存在下用氢化二异丁基氢化铝（DIBAL-H）处理（E）-烷-1-烯基二环己基硼烷1导致烷-1-烯基从硼转移到铝上，得到（ E）-在双键处保留构型的烷基-1-烯基二异丁基丙二酸酯。

  DOI：

  10.1039/b206541j

文献信息

• A Practical in situ Generation of the Schwartz Reagent. Reduction of Tertiary Amides to Aldehydes and Hydrozirconation
  作者：Yigang Zhao、Victor Snieckus

  DOI：10.1021/ol403183a

  日期：2014.1.17

  A new, highly efficient in situ protocol (Cp2ZrCl2/LiAlH(OBu-t)3) is described for the generation of the Schwartz reagent which provides a convenient method for the amide to aldehyde reduction and the regioselective hydrozirconation–iodination of alkynes and alkenes. Highlighted are chemoselective reductions of benzamides derived by directed ortho metalation (DoM) chemistry, allowing the synthesis

  描述了一种新的高效原位实验方案（Cp 2 ZrCl 2 / LiAlH（OBu- t）3），用于产生Schwartz试剂，该试剂为酰胺到醛的还原以及炔烃的区域选择性加氢锆化加碘提供了便利的方法。和烯烃。突出显示的是通过定向邻位金属化（D o M）化学反应生成的苯甲酰胺的化学选择性还原，可合成有价值的1,2,3-取代的苯甲醛。单步三组分过程在非常短的反应时间内进行，显示出极好的官能团相容性，并使用廉价且长期保存的稳定还原剂。
• Stereospecific Iron-Catalyzed Carbon (sp²)–Carbon (sp²) Cross-Coupling of Aryllithium with Vinyl Halides
  作者：Peng Chen、Zhi-Yong Wang、Xiao-Shui Peng、Henry N.C. Wong

  DOI：10.1021/acs.orglett.1c01318

  日期：2021.6.4

  We present herein an efficient synthetic protocol involving iron-catalyzed cross-coupling of organolithium compounds with vinyl halides as key coupling partners. More than 30 examples were obtained with moderate to good yields and high stereoselectivities. The practicality of this method is evidenced by a gram-scale synthesis. In addition, a preliminary mechanistic investigation was also performed

  我们在此提出了一种有效的合成方案，涉及有机锂化合物与乙烯基卤化物作为关键偶联伙伴的铁催化交叉偶联。获得了 30 多个具有中等至良好产率和高立体选择性的实例。克级合成证明了该方法的实用性。此外，还进行了初步的机械调查。
• Schwartz Reagents: Methods of In Situ Generation and Use
  申请人：Zhao Yigang

  公开号：US20100145060A1

  公开（公告）日：2010-06-10

  Embodiments of the invention provide a method of using Schwartz Reagent, Cp 2 Zr(H)Cl, without accumulating or isolating it. Methods provide mixtures of Cp 2 ZrCl 2 , reductants that selectively reduce Cp 2 ZrCl 2 , and substrates. After reaction of Cp 2 ZrCl 2 and the reductant, an intermediate reduction product is formed, apparently Schwartz Reagent. The in situ Schwartz Reagent then selectively reduces certain functional groups on the substrate. Substrates include tertiary amides, tertiary benzamides, aryl O-carbamates, and heteroaryl N-carbamates, which are reduced to aldehydes, benzaldehydes, aromatic alcohols, and heteroaromatics, respectively. Compared to prior methods, reagents are inexpensive and stable, reaction times are short, and reaction temperature in certain cases is conveniently room temperature. It has been estimated that using the in situ method described herein instead of synthesized or commercially obtained Schwartz Reagent provides a 50% reduction in cost.

  本发明的实施例提供了一种使用Schwartz试剂，Cp2Zr（H）Cl的方法，而无需积累或隔离它。方法提供了Cp2ZrCl2的混合物，选择性还原Cp2ZrCl2的还原剂，以及底物。在Cp2ZrCl2和还原剂发生反应后，形成了一个中间还原产物，显然是Schwartz试剂。然后，原位的Schwartz试剂选择性地还原底物上的某些官能团。底物包括三级酰胺、三级苯酰胺、芳基O-氨基甲酸酯和杂环N-氨基甲酸酯，它们分别被还原为醛、苯甲醛、芳香醇和杂环化合物。与先前的方法相比，试剂价格低廉且稳定，反应时间短，某些情况下的反应温度方便地为室温。据估计，使用本文描述的原位方法而不是合成或商业获得的Schwartz试剂可使成本降低50%。
• Stereoselective Alkenylation of Activated Olefins via Nickel-Catalyzed Electroreductive Coupling
  作者：Sylvie Condon-Gueugnot、Daniel Dupré、Jean-Yves Nédélec、Jacques Périchon

  DOI：10.1055/s-1997-1371

  日期：1997.12

  The nickel-catalyzed electroreductive conjugate addition of (Z)- or (E)-alkenyl halides to electron-deficient olefins in the presence of a sacrificial iron rod as the anode proceeds with complete retention of the stereochemistry of the alkenyl part and affords functionalized isomerically pure (Z)- or (E)-olefins in high yield.

  在牺牲铁棒作为阳极的情况下，镍催化的（Z）-或（E）-烯基卤化物与缺电子烯烃的电还原共轭加成反应完全保留了烯基部分的立体化学，并提供了官能化的异构体高收率纯(Z)-或(E)-烯烃。
• 10.1002/anie.202405290
  作者：Lin, Chuiyi、Zhang, Jiwu、Sun, Zhao、Guo, Yinlong、Chong, Qinglei、Zhang, Zhihan、Meng, Fanke

  DOI：10.1002/anie.202405290

  日期：——

  A new approach for highly efficient and enantioselective alkenylation of aldehydes promoted by an easily accessible cobalt-based complex was developed. This protocol represents the first example of incorporating a wide range of alkenyl groups with diversified substitution patterns as well as axial stereogenicity into enantioenriched allylic alcohols.

  开发了一种由易于获得的钴基络合物促进的醛的高效和对映选择性烯基化的新方法。该方案代表了将具有多样化取代模式以及轴向立体异构性的各种烯基纳入对映体富集的烯丙醇中的第一个例子。