亚戊基环戊烷 | 53366-55-5

• 分子结构分类: 有机化合物 - 碳氢化合物 - 不饱和烃
• 中文名称: 亚戊基环戊烷
• 英文名称: pentylidenecyclopentane
• CAS: 53366-55-5
• 化学式: C₁₀H₁₈
• 分子量: 138.253
• InChiKey: UUTALBLZKWDFDU-UHFFFAOYSA-N

物化性质

• 沸点：
  72-75 °C(Press: 15 Torr)
• 密度：
  0.889±0.06 g/cm3(Predicted)
• 保留指数：
  1045;1049

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  10
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 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：

  亚戊基环戊烷 在 四氧化锇 、 三(五氟苯基)硼烷 、 N-甲基吗啉氧化物 作用下， 以 二氯甲烷 、 水 、 丙酮 、 叔丁醇 为溶剂， 反应 40.0h， 生成 1-(((1R*,2S*)-2-butylcyclohexyl)oxy)-3,3,3-triethyl-1,1-diphenyldisiloxane
  参考文献：
  名称：

  未激活的1,2-二元醇通过协同立体转化机理进行催化还原Pinacol型重排

  摘要：

  内部人士的机会：通过使用简单的硼催化剂和两种硅烷（参见方案），开发了1,2-内部二醇催化的频哪醇型还原重排。该反应通过协同的立体反转机制发生，可用于通常不适合频哪醇类反应的几种底物支架，例如脂族仲-仲二醇，而无需进行预功能化。

  DOI：

  10.1002/anie.201704936
• 作为产物：
  描述：

  1-iodo-5-decyne 在 甲醇 、 叔丁基锂 作用下， 生成 亚戊基环戊烷
  参考文献：
  名称：

  Cyclization of acetylenic alkyllithiums

  摘要：

  The scope and limitations of cyclization reactions involving acetylenic alkyllithiums, which were prepared at -78-degrees-C by lithium-iodine exchange between the corresponding iodide and tert-butyllithium in a solution of n-pentane-diethyl ether (3:2 by volume), have been investigated. 4-Pentynyllithiums, 5-hexynyllithiums, and 6-heptynyllithiums bearing a phenyl or trimethylsilyl substituent on the triple bond undergo regiospecific exo-dig cyclization to give 4-, 5-, and 6-membered rings, respectively, bearing an exocyclic lithiomethylene moiety. Cyclization of the analogous alkyl-substituted acetylenic alkyllithiums seems to be confined to the 5-exo mode. The vinyllithium products of the cyclizations may be trapped by reaction with electrophiles to afford functionalized cycloalkylidene derivatives in good yield. The cyclization reactions were found to be highly stereoselective: intramolecular addition of the C-Li unit to the triple bond to produce 4- or 5-membered rings proceeds in a syn fashion to generate isomerically pure exocyclic vinyllithiums that may be functionalized to give stereoisomerically pure products. At the higher temperatures needed to effect cyclization of 6-heptynyllithiums, the initially formed (Z)-vinyllithium intermediate is isomerized to the more stable E-isomer which, when trapped with an electrophile, affords stereoisomerically pure product formally derived from anti addition to the triple bond.

  DOI：

  10.1021/ja00061a006

文献信息

• Catalytic Reduction and Intramolecular Cyclization of Haloalkynes in the Presence of Nickel(I) Salen Electrogenerated at Carbon Cathodes in Dimethylformamide
  作者：Michael A. Ischay、Mohammad S. Mubarak、Dennis G. Peters

  DOI：10.1021/jo052007a

  日期：2006.1.1

  Pentylidenecyclopentane can be conveniently prepared in up to 86% yield via the catalytic reduction of 1-iodo- or 1-bromo-5-decyne by [[2,2‘-[1,2-ethanediylbis(nitrilomethylidyne)]bis[phenolato]]-N,N‘,O,O‘]nickelate(I) electrogenerated at a carbon cathode in dimethylformamide containing tetramethylammonium tetrafluoroborate. This electrosynthesis can be accomplished at potentials for which the haloalkynes

  通过[[2,2 ' -[1,2-乙二基双（亚硝甲基））]双[苯酚基]催化还原1-碘-或1-溴-5-癸炔可以方便地制备亚萘基环戊烷，产率高达86％。] -N，N '，O，O '在包含四氟硼酸四甲基铵的二甲基甲酰胺中的碳阴极上电生成的]镍酸酯（I）。该电合成可以在卤代炔是电惰性的电势下完成，并且可以在室温下30分钟内完成。尝试在类似条件下分别由1-卤代4-壬炔和11-卤代5-十一炔合成戊二烯环丁烷和戊二烯环己烷可提供非常低的收率（分别为2％和6％）。衍生自各种卤代炔烃的其他产物是二聚体，炔烃和1-炔烃。由1-卤代4-壬炔和11-卤代5-十一炔产生的二聚体（alkadiynes）的产率为80％至89％，而icosa-5,15-diyne（由1-卤代获得的二聚体）发现-5-decyne）的收率明显较低（≤13％）。炔烃和1-炔烃的产率分别为3-10％和2-3％。提出了一种机制方案，该方案涉及由镍（
• Reactions of some alkynyl halides with Samarium(II) iodide
  作者：Zhihong Zhou、Denis Larouche、Sharon M. Bennett

  DOI：10.1016/0040-4020(95)00703-b

  日期：1995.10

  Certain alkynyl halides (6-halo-1-ynes) react with samarium(II) iodide (SmI2) to give cyclized products (methylenecyclopentanes) in good yield. We have found some interesting evidence for the presence of radical and unstable organosamarium intermediates in these reductive cyclizations. Methyl 7-halohept-2-ynoates are not. however, good substrates for this cyclization methodology.

  某些炔基卤化物（6-卤-1-炔）与碘化sa（II）（SmI 2）反应，以高收率得到环化产物（亚甲基环戊烷）。我们发现了一些有趣的证据，表明这些还原环化反应中存在自由基和不稳定的有机sa中间体。7-卤代庚二酸甲酯不是。但是，这种环化方法具有良好的底物。
• Cyclizations of .omega.-alkynyl halides by chromium(II) reduction
  作者：Jack K. Crandall、W. J. Michaely

  DOI：10.1021/jo00196a026

  日期：1984.11
• Switchable Synthetic Strategy toward Trisubstituted and Tetrasubstituted Exocyclic Alkenes
  作者：Sen Zhou、Fangyuan Yuan、Minjie Guo、Guangwei Wang、Xiangyang Tang、Wentao Zhao

  DOI：10.1021/acs.orglett.8b02801

  日期：2018.11.2

  An efficient and facile method for the construction of tri- or tetrasubstituted exocyclic alkenes is achieved via a Cu(I)-catalytic system. This protocol exhibits mild conditions, low-cost catalyst, good functional group tolerance, and good yields. The selectivity toward tri- or tetrasubstituted alkenes can be delicately controlled by adjustment of base and solvent. A preliminary mechanism study manifested that the reaction undergoes a radical process, where B(2)pin(2) plays an indispensable role.
• Achyutha Rao; Knochel, Paul, Journal of the American Chemical Society, 1991, vol. 113, # 15, p. 5735 - 5741
  作者：Achyutha Rao、Knochel, Paul

  DOI：——

  日期：——

表征谱图