(E)-(2,3,3-三甲基-1-丁烯基)苯 | 131792-84-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: (E)-(2,3,3-三甲基-1-丁烯基)苯
• 英文名称: (E)-2,3,3-Trimethyl-1-phenyl-1-butene
• 英文别名: 1-phenyl-2,3,3-trimethyl-1-butene；(E)-(2,3,3-Trimethyl-1-butenyl)benzol；2,3,3-trimethyl-1-phenyl-1-butene；(E)-(2,3,3-trimethylbut-1-en-1-yl)benzene；β-Methyl-seq.trans-β-tert.-butyl-styrol；[(E)-2,3,3-trimethylbut-1-enyl]benzene
• CAS: 131792-84-2
• 化学式: C₁₃H₁₈
• 分子量: 174.286
• InChiKey: LOTGUGJIIKBVJL-ZHACJKMWSA-N

物化性质

• 沸点：
  40-42 °C(Press: 0.13 Torr)
• 密度：
  0.887±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 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：

  (Z)-(2,3,3-三甲基-1-丁烯基)苯 生成 (E)-(2,3,3-三甲基-1-丁烯基)苯
  参考文献：
  名称：

  Roth, Wolfgang R.; Staemmler, Volker; Neumann, Martin, Liebigs Annalen, 1995, # 6, p. 1061 - 1118

  摘要：

  DOI：

文献信息

• Palladium-catalyzed cross-coupling of aryl and alkenyl boronic acids with alkenes via oxidative addition of a carbonboron bond to palladium(O)
  作者：Chan Sik Cho、Sakae Uemura

  DOI：10.1016/0022-328x(94)87040-3

  日期：1994.2

  those from arylboronic acids. Similar treatment of sodium tetraphenylborate (NaBPh4) with alkenes also affords the corresponding phenylated alkenes in high yields together with biphenyl and benzene as side products. Oxidative addition of a carbonboron bond to palladium(O), formed in situ, to give an organopalladium(II) species is assumed to be the key step of these cross-coupling reactions.

  在催化量的乙酸钯（II）和乙酸钠的存在下，芳基硼酸在25℃在乙酸中与烯烃反应，以高收率得到相应的芳基取代的烯烃。烯基硼酸在相似的条件下与烯烃反应，从而立体定向地生成相应的共轭二烯，但与芳基硼酸相比，产物收率较低。用烯烃对四苯硼酸钠（NaBPh 4）进行类似处理，还可以高收率得到相应的苯化烯烃，以及联苯和苯作为副产物。在原位形成的钯（O）上氧化碳硼键以得到有机钯（II）物种被认为是这些交叉偶联反应的关键步骤。
• Formation of cyclopropanes in γ-eliminations of sulphoxides
  作者：R. Baker、M. J. Spillett

  DOI：10.1039/j29690000581

  日期：——

  formed in dimethyl sulphoxide than in triethylamine. The increasing proportions of 1,3-elimination are discussed in terms of an entropy effect, and the decreasing amounts of 1,2-elimination is in terms of the steric interactions in the transition state for a concerted elimination. That the 1,3-elimination is favoured in dimethyl sulphoxide is explained in terms of the different natures of the two solvents

  一些2-烷基-1-甲基亚磺酰基-3-苯丙烷类（烷基= H，Me中，乙基，丙基我，或卜吨）已经制备; 在酰胺钾-三乙胺和甲基亚磺酰基甲基甲烷-二甲亚砜钠的体系中研究了它们的分解。通过最初形成的2-烷基-3-苯基丙烯的异构化，仅通过反式-1-烷基-2-苯基环丙烷的1，3-消除和通过反式1- β-烷基-β-甲基苯乙烯的1,2-消除主要产生反式-β-烷基-β-甲基苯乙烯。取代的环丙烷的相对量通过H系列增加<我<的Et <镨我<卜吨，并且对于每种底物，在二甲基亚砜中比在三乙胺中形成更多的环丙烷。1,3-消除的比例增加是通过熵效应来讨论的，1,2-消除的减少量是以过渡态下的空间相互作用来协调消除的。从两种溶剂的不同性质及其对E 1 cB 1,3-消除和协同1,2-消除的影响方面解释了在二甲亚砜中偏爱1,3-消除的方法。制备了2，2-二甲基-1-甲基亚磺酰基-3-苯基丙烷，1-甲基亚磺酰基-2，3-二苯
• Pd-Catalyzed Coupling of <i>N</i>-Tosylhydrazones with Benzylic Phosphates: Toward the Synthesis of Di- or Tri-Substituted Alkenes
  作者：Kena Zhang、Olivier Provot、Mouad Alami、Christine Tran、Abdallah Hamze

  DOI：10.1021/acs.joc.1c02580

  日期：2022.1.21

  in good to high yields by coupling N-tosylhydrazones (NTHs) with benzylic phosphates as electrophilic partners. The obtained new catalytic system consisted of PdCl2(CH3CN)2/dppp, LiOtBu as a base, and cyclopentyl methyl ether as a green solvent. In addition, we performed a gram-scale transformation using NTH derivatives and benzylic phosphates having a C sp2–Cl bond. The latter was used as a starting

  该研究表明，通过将N-甲苯磺酰腙 (NTH) 与磷酸苄基作为亲电伙伴偶联，可以以良好至高产率获得各种具有高化学选择性的二取代和三取代烯烃。得到的新型催化体系由PdCl 2 (CH 3 CN) 2 /dppp、LiO t Bu为碱、环戊基甲基醚为绿色溶剂组成。此外，我们使用 NTH 衍生物和具有 C sp 2 -Cl 键的苄基磷酸酯进行了克级转化。后者被用作关键中间体进一步后功能化的起点。
• Rearrangement of 1,3-diradicals. Arylcyclopropane photochemistry
  作者：Howard E. Zimmerman、Jenifer A. Heydinger

  DOI：10.1021/jo00005a018

  日期：1991.3

  The photochemistry of a series of aryl-substituted cyclopropanes was investigated as part of our continuing investigations of these systems. The literature held a puzzling discrepancy in which several similar reactants exhibited differing photochemistry. A series of 3-aryl-1,1,2,2-tetramethylcyclopropanes was found to rearrange photochemically to give primarily two types of products, the anticipated 4-aryl-2,3,3-trimethyl-1-butenes and, additionally, 1-aryl-2,3,3-trimethyl-1-butenes. The latter arise from regioselective methyl migration of intermediate singlet 1,3-diradicals. Also, the usual Griffin carbene fragmentation was encountered as a minor pathway. Biphenylyl-, p-cyanophenyl-, and p-anisyl-substituted cyclopropanes were studied. Also, the photochemistry of 3-phenyl-1,1,2,2-tetramethylcyclopropane was reinvestigated and found to conform to the general pattern of reactivity. Throughout, it was the singlet excited states responsible for the observed reactivity, and the triplet counterparts were found to be unreactive. In addition, the photochemistry of 3-biphenylyl-2,2-dimethyl-1,1-diphenylcyclopropane was studied. Again, the triplet was unreactive. The singlet gave rise to 4-biphenylyl-2-methyl-3,3-diphenyl-1-butene exclusively. The differing behavior of the various arylcyclopropanes is discussed from a mechanistic viewpoint. In the case of the 3-aryl-1,1,2,2-tetramethylcyclopropanes, the regioselectivity of the 1,3-diradical intermediate favors migration toward the less delocalized odd-electron center. This selectivity is understood on a quantum mechanical basis. Finally, quantum yields are reported.
• Transition metal promoted reactions. 38. NiCl2(dppe)-catalyzed geminal dialkylation of dithioacetals and trimethylation of ortho thioesters
  作者：Yih Ling Tzeng、Ping Fan Yang、Nai Wen Mei、Tien Min Yuan、Chun Chi Yu、Tien Yau Luh

  DOI：10.1021/jo00018a016

  日期：1991.8

  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.