5,5-dimethyl-2,3-hexadiene | 36382-08-8

• 分子结构分类: 有机化合物 - 叠烯 - 无环联烯
• 英文名称: 5,5-dimethyl-2,3-hexadiene
• 英文别名: 5,5-Dimethyl-hexa-2,3-dien
• CAS: 36382-08-8
• 化学式: C₈H₁₄
• 分子量: 110.199
• InChiKey: MGWMPVYWLFYHNI-UHFFFAOYSA-N

物化性质

• 沸点：
  116.3±7.0 °C(Predicted)
• 密度：
  0.720±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  8
• 可旋转键数：
  1
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.62
• 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：

  5,5-dimethyl-2,3-hexadiene 以 various solvent(s) 为溶剂， 生成 5,5-二甲基-1,3-己二烯
  参考文献：
  名称：

  [1,3]-Hydrogen sigmatropic rearrangements in alkyl-substituted allenes

  摘要：

  DOI：

  10.1021/jo00014a046
• 作为产物：
  描述：

  2,2-dimethylhexa-3,4-dienal 生成 5,5-dimethyl-2,3-hexadiene
  参考文献：
  名称：

  Addition reactions of allenes. III. 2,4-Dinitrobenzenesulfenyl chloride and bromine

  摘要：

  DOI：

  10.1021/ja01002a031

文献信息

• Reactions of 3-alkyl- and 3,3-dialkyl-1-bromoallenes with organocuprates: Effects of the nature of the cuprate reagent on the regio- and stereoselectivity
  作者：Anna Maria Caporusso、Carmela Polizzi、Luciano Lardicci

  DOI：10.1016/s0040-4039(00)96867-9

  日期：1987.1

  Organocuprates induce 1,3- and direct substitution in 3-alkyl- and 3,3-dialkyl-1-bromo-1,2-dienes leading respectively to either terminal acetylenes or allenic hydrocarbons. The nature of the cuprate exerts a prominent role in determining both the regio- and the stereochemistry of these reactions.

  有机酸盐诱导3-烷基-和3,3-二烷基-1-溴-1,2-二烯中的1,3-和直接取代，分别导致末端乙炔或烯丙烃。铜酸盐的性质在确定这些反应的区域化学和立体化学中起着重要作用。
• Reaction of 1-bromo-1,2-dienes with alkylcuprates as a regio- and stereo-selective route to acetylenic or allenic compounds
  作者：Carmela Polizzi、Carla Consoloni、Luciano Lardicci、Anna Maria Caporusso

  DOI：10.1016/0022-328x(91)80179-n

  日期：1991.10

  Alkylcuprates react with 1-bromo-1,2-dienes to give allenic and/or acetylenic products. The selectivity of the crosscoupling is markedly dependent on the nature of the copper reagent, which plays a prominent role in determining both the regio- and the stereo-chemistry. The preparative aspects of these copper-induced reactions are discussed and their possible mechanism discussed.

  烷基杯酸酯与1-溴-1,2-二烯反应生成烯丙基和/或炔属产物。交叉偶联的选择性显着取决于铜试剂的性质，铜试剂在决定区域化学和立体化学方面都起着重要的作用。讨论了这些铜诱导的反应的制备方面，并讨论了其可能的机理。
• Coupling of chiral 1-bromo-1,2-dienes with zinc-based cuprates: a new procedure for the regio and stereoselective synthesis of functionalized acetylenic compounds
  作者：Anna Maria Caporusso、Sara Filippi、Federica Barontini、Piero Salvadori

  DOI：10.1016/s0040-4039(99)02249-2

  日期：2000.2

  are found to be active in the cross-coupling reaction with allenic bromides affording acetylenic products with a high regio and stereoselective 1,3-anti substitution. The coupling process, which has been successfully extended to functionalized cuprates, can also be performed with alkylzinc chlorides in the presence of catalytic amounts of cuprous salts.

  发现烷基氰基古朴酸锌（Knochel试剂）在与烯丙基溴的交叉偶联反应中具有活性，从而提供具有高区域和立体选择性1,3-抗取代作用的炔属产物。偶联过程已经成功地扩展到官能化的铜酸盐，也可以在催化量的亚铜盐存在下用烷基锌氯化物进行偶联。
• Electrophilic additions to allenes—II
  作者：Dennis G. Garratt、Pierre L. Beaulieu、M.Dominic Ryan

  DOI：10.1016/s0040-4020(01)83115-x

  日期：1980.1

  Benzeneselenenyl chloride reacts with 1,3-dialkyl-substituted allenes in methylene chloride solution to give 1:1-adducts. Attack by selenium is found to occur exclusively at the central allenic carbon. In contrast to the analogous reaction of arenesulphenyl chlorides, the preferential formation of the Z-alkene is observed. A mechanism involving the preequilibrium formation of alkylideneseleniranium

  苯硒基氯与二氯甲烷中的1,3-二烷基取代的丙二烯反应，生成1：1的加合物。发现硒的攻击仅发生在中心艾伦碳上。与芳烃磺酰氯的类似反应相反，观察到Z-烯烃的优先形成。提出了一种机制，该机制涉及烷基亚烯基亚硒酸根离子和/或亚烷基亚乙基二硒基呋喃的预平衡形成，在产物确定步骤中，该化合物通过氯在环的次甲基碳上的抗攻击而崩解成产物，以解决Z-优先形成的问题。异构体。
• Highly Enantioselective and Regioselective Nickel-Catalyzed Coupling of Allenes, Aldehydes, and Silanes
  作者：Sze-Sze Ng、Timothy F. Jamison

  DOI：10.1021/ja0521831

  日期：2005.5.25

  three-component coupling reaction involving allenes, aldehydes, and organosilanes and transfers the axial chirality of the allene to a stereogenic center in the product with very high fidelity. An unexpected regioselectivity is observed; favored are allylic rather than homoallylic alcohol derivatives, corresponding to the unusual process of coupling two electrophilic atoms: the allene sp and aldehyde

  衍生自 Ni(cod)2 和 NHC-IPr 的复合物催化涉及丙二烯、醛和有机硅烷的三组分偶联反应，并将丙二烯的轴向手性以非常高的保真度转移到产品中的立体中心。观察到了意想不到的区域选择性；最受欢迎的是烯丙醇衍生物而不是高烯丙醇衍生物，对应于偶合两个亲电子原子的不寻常过程：丙二烯sp和醛碳原子。在所有情况下，都观察到了高对映选择性、高 Z/E 选择性，并且对于差异取代的丙二烯，观察到了高位点选择性。这种转变代表了丙二烯的第一个对映选择性多组分偶联过程。