(E)-1-methyl-4-(3-methylbut-1-en-1-yl)benzene | 32094-37-4

• 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: (E)-1-methyl-4-(3-methylbut-1-en-1-yl)benzene
• 英文别名: 1-Methyl-4-(3-methyl-1-butenyl)benzene；1-methyl-4-[(E)-3-methylbut-1-enyl]benzene
• CAS: 32094-37-4
• 化学式: C₁₂H₁₆
• 分子量: 160.259
• InChiKey: HHCBPIZDDBDNKZ-QPJJXVBHSA-N

物化性质

• 沸点：
  232.2±10.0 °C(Predicted)
• 密度：
  0.889±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  甲基碘化镁 、 2-[(E)-2-(4-methylphenyl)ethenyl]-1,3-dithiolane 在 1,2-双(二苯基膦)乙烷氯化镍 作用下， 以 乙醚 、 苯 为溶剂， 反应 12.0h， 以98%的产率得到(E)-1-methyl-4-(3-methylbut-1-en-1-yl)benzene
  参考文献：
  名称：

  Transition metal promoted reactions. 38. NiCl2(dppe)-catalyzed geminal dialkylation of dithioacetals and trimethylation of ortho thioesters

  摘要：

  NiCl2(dppe)-catalyzed cross-coupling of cinnamaldehyde dithioacetals gave the corresponding geminal dimethylation products in excellent yields. Allylic ortho thioesters afforded regioselectively the corresponding trimethylation products. The reaction may occur via an 18-electron pi-allyl intermediate, which undergoes facile reductive elimination to afford the geminal dimethylation product. Benzylic dithioacetals having an ortho amino group gave 2-isopropylanilines exclusively. The reaction of benzylic dithioacetals with EtMgBr under the same conditions yielded geminal diethylation products.

  DOI：

  10.1021/jo00018a016

文献信息

• Copper- and Nickel-Catalyzed Cross-Coupling Reaction of Monofluoroalkenes with Tertiary, Secondary, and Primary Alkyl and Aryl Grignard Reagents
  作者：Hongyan Shi、Wenpeng Dai、Biyun Wang、Song Cao

  DOI：10.1021/acs.organomet.7b00859

  日期：2018.2.12

  with tertiary, secondary, and primary alkyl and aryl Grignard reagents in the presence of a catalytic amount of copper or nickel catalyst, respectively, has been developed. The reactions proceeded smoothly at room temperature, providing (E)-alkene isomers in moderate to high yields. Plausible mechanisms of the Ni-catalyzed coupling reaction of monofluoroalkene with Grignard reagents are suggested.

  已经开发了在催化量的铜或镍催化剂存在下，单氟烯烃分别与叔，仲，伯烷基和芳基格氏试剂的高效交叉偶联反应。反应在室温下顺利进行，以中等至高产率提供（E）-烯烃异构体。提出了单氟烯烃与格氏试剂在Ni催化下偶联反应的合理机理。
• Lithium hydroxide as base in the Wittig reaction. A simple method for olefin synthesis
  作者：R. Antonioletti、F. Bonadies、A. Ciammaichella、A. Viglianti

  DOI：10.1016/j.tet.2008.02.091

  日期：2008.5

  A mild and practical procedure for the Wittig olefination, promoted by lithium hydroxide and triphenylbenzyl phosphonium bromide, has been set up for the synthesis of stilbenes and styrenes. The experimental conditions allow aromatic, heteroaromatic, unsaturated and saturated aliphatic aldehydes to give final products in good yields.

  已经建立了由氢氧化锂和三苯基苄基溴化promote促进的Wittig烯烃化反应的温和且实用的方法，用于合成对苯二酚和苯乙烯。实验条件允许芳族，杂芳族，不饱和和饱和脂族醛以高收率得到最终产物。
• Dealkenylative Alkenylation: Formal σ‐Bond Metathesis of Olefins
  作者：Manisha Swain、Gusein Sadykhov、Ruoxi Wang、Ohyun Kwon

  DOI：10.1002/anie.202005267

  日期：2020.9.28

  unexplored area for C−C bond formation. Herein 64 examples of β‐alkylated styrene derivatives, synthesized through the reactions of readily accessible feedstock olefins with β‐nitrostyrenes by ozone/FeII‐mediated radical substitutions, are reported. These reactions proceed with good efficiencies and high stereoselectivities under mild reaction conditions and tolerate an array of functional groups. Also demonstrated

  烯烃C（sp 3）-C（sp 2）键的脱烯基烯基化作用一直是C-C键形成的未知区域。本文报道了64个β-烷基化苯乙烯衍生物的例子，这些例子是通过容易获得的原料烯烃与β-硝基苯乙烯通过臭氧/ Fe II介导的自由基取代反应而合成的。在温和的反应条件下，这些反应具有良好的效率和较高的立体选择性，并且可以耐受一系列官能团。还证明了该策略通过产品的几种合成转化以及天然产物异吗啡丁和药物（E）-美丹尼丁的合成的适用性。
• Visible-light-mediated alkylation of 4-alkyl-1,4-dihydropyridines with alkenyl sulfones
  作者：Fuyang Yue、Jianyang Dong、Yuxiu Liu、Qingmin Wang

  DOI：10.1039/d1ob01806j

  日期：——

  Herein we report a mild, general protocol for visible-light-mediated alkylation of 4-alkyl-1,4-dihydropyridines with alkenyl sulfones. The protocol permits efficient functionalization of sulfones with a broad range of cyclic and acyclic secondary and tertiary alkyl groups and is scalable to the gram level. Its excellent functional group tolerance and mildness make it suitable for late-stage functionalization

  在这里，我们报告了一种温和的通用方案，用于可见光介导的 4-烷基-1,4-二氢吡啶与烯基砜的烷基化。该协议允许对具有广泛的环状和非环状二级和三级烷基的砜进行有效的功能化，并且可以扩展到克级。其优异的官能团耐受性和温和性使其适用于天然产物和药物分子的后期官能化。
• Copper-Catalyzed Decarboxylative C(sp² )-C(sp³ ) and C(sp)-C(sp³ ) Coupling of Substituted Cinnamic Acids and 3-Phenyl Propiolic Acid with N-Tosyl Oxaziridines
  作者：Bich-Ngoc Nguyen、Hai-Thuong Cao

  DOI：10.1002/ejoc.201900982

  日期：2019.9.15

  We describe the copper‐catalyzed decarboxylative alkylation of substituted cinnamic acids using N‐Tosyl oxaziridines with high yields and excellent stereoselectivities. The (E)‐alkene was achieved as the sole isomer in a single step. Our protocol also gives an efficient approach for the construction of alkyl phenyl acetylenes without oxidants and bases. Initial investigation suggested a radical process

  我们描述了使用N-甲苯磺酰氧氮丙啶具有高收率和优异的立体选择性的铜催化的取代肉桂酸脱羧烷基化反应。（E）-烯烃是一步完成的唯一异构体。我们的协议还为构建没有氧化剂和碱的烷基苯基乙炔提供了一种有效的方法。初步调查表明，涉及到一个激进的过程。