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2,3-di-tert-butyl-1,3-butadiene | 3378-20-9

中文名称
——
中文别名
——
英文名称
2,3-di-tert-butyl-1,3-butadiene
英文别名
2,2,5,5-Tetramethyl-3,4-dimethylenehexane;2,3-Di-tert-butyl-1,3-butadien;2,3-di(tert.butyl)butadiene;2,3-di-tert-butyl-buta-1,3-diene;2.2.5.5-Tetramethyl-3.4-dimethylen-hexan;2,3-Di-tert-butyl-buta-1,3-dien;1,3-Butadiene, 2,3-di(tert-butyl)-;2,2,5,5-tetramethyl-3,4-dimethylidenehexane
2,3-di-tert-butyl-1,3-butadiene化学式
CAS
3378-20-9
化学式
C12H22
mdl
——
分子量
166.307
InChiKey
XOJJYBDDNRTSIT-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    168-170 °C
  • 密度:
    0.7754 g/cm3(Temp: 15 °C)

计算性质

  • 辛醇/水分配系数(LogP):
    5.7
  • 重原子数:
    12
  • 可旋转键数:
    3
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.67
  • 拓扑面积:
    0
  • 氢给体数:
    0
  • 氢受体数:
    0

SDS

SDS:42ebdcf745b3b4e65b1054d76a2add87
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上下游信息

  • 下游产品
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

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文献信息

  • Synthesis, crystal, and molecular structure of 3,4-di-t-butylthiophen
    作者:Lambert Brandsma、Johnny Meijer、Herman D. Verkruijsse、G�sbertus Bokkers、Albert J. M. Duisenberg、Jan Kroon
    DOI:10.1039/c39800000922
    日期:——
    A successful synthesis of the hitherto unknown 3,4-di-t-butylthiophen and the results of its crystal structure determination are reported.
    报道了迄今为止未知的3,4-二叔丁基噻吩的成功合成及其晶体结构测定的结果。
  • The Ever-Elusive Tetra-<i>tert</i>-butylethene (TTBE, 3,4-Di-<i>tert</i>-butyl- 2,2,5,5-tetramethylhex-3-ene): Further Insight on Its Preparation
    作者:Oliver Klein、Henning Hopf、Jörg Grunenberg
    DOI:10.1002/ejoc.200801292
    日期:2009.5
    26. Upon treatment with dimethyltitanium dichloride, 4 cyclizes into fully alkylated furan derivative 30; the still unknown tetra-tert-butylethene (1, TTBE, 3,4-di-tert-butyl-2,2,5,5-tetramethylhex-3-ene) was not produced. The structural properties of 4 and the mechanism of its cyclization into 30 are discussed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
    二酮 4 通过己二炔 5 的解制备,后者可通过乙炔酮 26 的 McMurry 偶联获得。用二甲基二氯化钛处理后,4 环化成完全烷基化的呋喃生物 30;仍然未知的四叔丁基乙烯 (1, TTBE, 3,4-di-tert-butyl-2,2,5,5-tetramethylhex-3-ene) 没有产生。讨论了4的结构性质及其环化成30的机理。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
  • Reaction of Crowded Olefins with Bromine. A Comparison of the Strained (E)-2,2,3,4,5,5-Hexamethylhex-3-ene with the Sterically Hindered Tetraisobutylethylene
    作者:Giuseppe Bellucci、Roberto Bianchini、Cinzia Chiappe、Dieter Lenoir、Abdul Attar
    DOI:10.1021/ja00128a010
    日期:1995.6
    (E)-2,2,3,4,5,5-Hexamethylhex-3-ene (HMH, 2) reacts with Br-2 in chlorinated hydrocarbon solvents to give 3-bromo-2-tert-butyl-3,4,4-trimethylpentene (4), which is dehydrobrominated to 2,3-di-tert-butyl-1,3-butadiene (5). The first product of the interaction of the title olefin and Br-2 in 1,2-dichloroethane is a 1:1 CTC having K-f = 84(0.3) M(-1) at 25 degrees C, Delta H = -5.7(0.4) kcal mol(-1), and Delta S = -10.3(1.3)eu in this solvent. This probably evolves to a second CTC of 1:2 stoichiometry, which ionizes directly to a bromonium-tribromide ion pair. Removal of an H+ from the bromonium ion by the counteranion gives the allylic bromide 4. Kinetic investigations using 2-H6 and its 3,4-bis(trideuteriomethyl) derivative 2-D6 show a primary kinetic isotope effect k(H)/k(D) = 2.17(0.25) at 25 degrees C, which decreases with increasing temperature, showing that the deprotonation step is at least partially rate determining. A similar conclusion holds for the reaction in acetic acid, where a k(H)/k(D) = 2.05(0.1) at 25 degrees C is observed. This requires that the formation of the bromonium ion intermediate is a reversible process, as for the analogous reaction of tetraisobutylethylene (TIBE, 1) with Br-2. The apparent activation energy for the reaction of 2-H6 in acetic acid, E(a(obsd)) = 1.93(0.06) kcal mol(-1), is much lower than that for the reaction of TIBE (1), E(a(obsd)) = 15.65(1.22) mol(-1). This is mainly attributable to steric strain present in the olefin HMH, 2,which is relieved in in the rate-determining transition state.
    (E)-2,2,3,4,5,5-六甲基己烯 (HMH, 2)与Br-2在烷烃溶剂中反应,得到3-溴-2-tert-丁基-3,4,4-三甲基戊烯(4),随后被脱生成2,3-二tert-丁基-1,3-丁二烯(5)。该烯烃与Br-2在1,2-二氯乙烷的反应首产物为1:1的比例循环转化物(CTC),其稳定自由能为 K-f = 84(0.3) M⁻¹,ΔH = -5.7(0.4) kcal mol⁻¹,ΔS = -10.3(1.3) eu。这种情况下,可能转化为1:2 的第二步产物,该产物直接形成onium-三角溴离子对。通过加入反离子消除onium离子中的H+,从而得到邻位化物 4。通过使用2-H6及其3,4-二(D-TMS)甲基取代的化物 2-D6来进行动力学研究,发现在25°C时,一级动压效应 k(H)/k(D) = 2.17(0.25),并且随着温度的升高而减小,这表明解离步骤至少部分影响了反应速率。在酸性条件下的情况类似,观察到 k(H)/k(D) = 2.05(0.1)。由此可知,溴离子中间体的形成过程应为可逆的,例如对于以正丁基丙烯为模型的类似反应。在酸性条件下,2-H6的动压能 E(a(obsd)) = 1.93(0.06) kcal mol⁻¹较差于 TIB.[Hm,这里的 E(a(obsd)) = 15.65(1.22) kcal mol⁻¹,这主要归因于烯烃 HMH, 2中的立体阻碍,这部分障碍在确定步的反应速率特征中被缓解。
  • A Facile Synthesis of 2,3-Dialkyl-1,3-butadienes
    作者:Shuki Araki、Masayuki Ohmura、Yasuo Butsugan
    DOI:10.1055/s-1985-31404
    日期:——
    2,3-Dialkyl-1,3-butadienes were selectively synthesized by the copper(I) iodide-catalyzed reaction of 1,4-bis-[diethoxyphosphinyloxy]-2-butyne with alkyl Grignard reagents.
    通过(I)化物催化的反应,成功选择性地合成了2,3-二烷基-1,3-丁二烯,该反应利用1,4-双[二乙氧基酰氧基]-2-丁炔与烷基格氏试剂
  • Ozonolysis of olefins adsorbed on polyethylene: a new access to ozonides by cycloadditions of carbonyl oxides to ketones
    作者:Karl Griesbaum、Willi Volpp、Reinhard Greinert
    DOI:10.1021/ja00304a066
    日期:1985.9
    Ozonolyse du dimethyl-2,3 butene-2 adsorbe sur poudre de polyethylene. Obtention du tetramethyl trioxolanne-1,2,4 etonnamment stable. On etudie egalement l'ozonolyse du dimethylene-3,4 tetramethyl-2,2,5,5 hexane. Le polyethylene a des proprietes tres favorables a la formation d'ozonides
    Ozonolyse du 二甲基-2,3 丁烯-2 吸附在聚乙烯上。获得四甲基三氧戊环-1,2,4 苯胺稳定。在 etudie egalement l'ozonolyse du dimethylene-3,4 tetramethyl-2,2,5,5 己烷。Le 聚乙烯 a des proprietes tresavoures a la formation d'ozonides
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